Polymer composition

FIELD: polymer materials.

SUBSTANCE: invention relates to novel liquid molding compositions comprising water-soluble or water-foaming polymer, which can be employed to improve water and moisture resistance as well as for waterproofing operation, for instance of waterproofing of cables. Composition contains water, water-soluble or water-foaming organic polymer obtained from monomer mixture containing 25 to 90 wt % of nonomer(s) selected from group including (meth)acrylamide and (meth)acrylic acid or salts thereof; 10 to 75 wt % of nonomer(s) selected from group including C8-C30-alkylethoxylated (meth)acrylamides, C8-C0-alkyl(meth)allyl ethers and C8-C30-alkylethoxylated (meth)allyl ethers; and water-miscible organic volatile liquid. Polymer is present in the form of discrete particles with average cross dimension below 10 μm. Invention further provides a method for improving water and moisture resistance of articles and/or preventing introduction of water into interior of article by way of contacting this article with above-indicated composition. Method of imparting waterproofing to outside or internal components of a cable comprises contacting at least one internal component with liquid molding composition. Invention allows preparation of composition capable of protecting fiber-optic cable.

EFFECT: enhanced waterproofing properties.

15 cl, 2 tbl, 11 ex

 

The invention relates to new liquid injection molding compositions comprising water-soluble or fotosprivadas polymer. The invention also relates to processes and ways to improve water and moisture resistance, as well as for waterproofing, for example, cables.

Polymer compositions can be prepared from a number of liquid ingredients. For example, a common practice is the preparation of water-soluble or vodosmavaema polymer particles in a liquid hydrocarbon, is not miscible with water. Such compositions are usually prepared by polymerization of a reverse phase emulsion of water-soluble monomers, the following, as a rule, for azeotropic dehydration. Such polymers can be dissolved or gidratirovana in aqueous medium by mixing a reverse phase emulsion or dispersion of water, preferably in the presence of surfactants. Such compositions can be used as flocculants, for example, for dewatering or thickening of aqueous suspensions.

Also known method of preparing water-soluble or vodosmavaema polymers in the form of dispersions in aqueous solutions. In the compositions of aqueous solutions containing dissolved inorganic salts, and/or dissolved water-soluble polymers, and/or dissolved surface-active substances (surfactants). Although such t is Coochie compositions and amenable to casting, they are generally more viscous than the above-mentioned reverse phase emulsion and dispersion, and, in addition, may contain less dispersed phase of a water-soluble or fotosprivadas polymer. Such aqueous dispersions of water-soluble or fotosprivadas polymer can be synthesized by polymerization of water-soluble monomer in the presence of these aqueous solutions containing dissolved inorganic salts, and/or water-soluble polymers and/or surfactants.

Otherwise it is also possible to synthesize such aqueous dispersions of water-soluble or fotosprivadas polymer by dispersing fine particles of prepolymer specified in an aqueous solution containing dissolved inorganic salts, and/or water-soluble polymers and/or surfactants. Such compositions can be used as flocculants, for example, for dewatering or thickening of aqueous suspensions.

Solutions associated polymers in a mixture of water and a polar solvent, such as alcohols and esters, described in the patent EP-A-358385. In such solutions, the proportion of polymer is usually less than 30%, preferably from 5 to 15% relative to the entire solution. The proportion of polar solvent is usually from 5 to 20% in a mixture of water - polar solvent. The polymer solution may have a viscosity of not more than 30,000 centipoise, for example, no more than 5000 centipoise. Viscous shall be of such polymer solutions increases, at least three times upon further dilution with water. Basically, these compounds are used as thickeners for aqueous solutions.

It is used to impart a variety of hydrophobic materials, such as paper or cardboard, water-repellent properties. Such compositions, mostly, are not water-soluble polymers, forming on the surface of a material impermeable barrier to water or moisture.

It is well known to use solutions of resinous materials in hydrocarbon solvents to create protection from moisture on such substrates as wood.

In the field of cable manufacturing is common practice to use water or moisture absorbing material in the form of powders to prevent water penetration.

In fiber optic cables, special attention should be paid to prevent contact of water with fiberglass, which can lead to the spreading of water along the fiber and the associated loss of light transmission in large sections of the cable.

Typically in the manufacture of fiber optic cables, each fiber is surrounded by a thick ointments are oil-based or absorbent powders. Typically, these creams are made in a pre-formed cable by injection so that the lubricant fills all space between the optical is mi fibers and the outer shell. The inconvenience of using ointments that in case of breakage of the outer shell ointment can flow from the cable, as this may cause water leakage, to the optical elements.

Another way to impart moisture resistance of fiber optic cables - the use of water-absorbing powders. Such powders should fill the space between the optical fiber and the outer cable sheath. As a rule, water-absorbing powders are applied to the tape, which is wound around the optical core. The disadvantage of water-absorbing powders is that they do not provide complete waterproofing.

In patents WO-A-9637900 and WO-A-9637901 described processes, providing waterproofing optic cables. In each of these patents first optical fiber is pulled through the covering and the die plate, covered with a liquid mixture of an absorber and a polymer material, and then through the UV source, where the curing of the coating. Specified liquid mixture or should not contain, or contain a small amount of water or volatile organic solvent to reduce the heat surge. However, the process depends on the curing of the polymer material, which, in the absence of sufficient amount of water or other solvent, can inhibit the mobility of the radical polymeric material that may lead the to incomplete polymerization, and this will affect the efficiency of moisture. On the other hand, if the liquid mixture contains enough water to ensure the mobility of molecules and radicals of the polymer, the polymerization will be more likely, but without the stage of drying, the water or the solvent will still be contained within the cured matrix. Perhaps the excess water or solvent can evaporate, causing shrinkage and even destruction of the coating, which will lead to the deterioration of the waterproof properties.

It is therefore desirable to provide a water and moisture resistance of the optical fibers within the cable by means of the proposed drug.

Thus, the first aspect of the present invention is a new composition, which, among other used, can be used to make optical fibers moisture and water resistance.

The first aspect of this invention is the injection of a liquid composition comprising water, a water-soluble or fotosprivadas polymer containing from 25 to 90 wt.% monomer or monomers selected from the group of (meth)acrylamide, (meth)acrylic acid or its salts, and from 10 to 75 wt.% monomer or monomers selected from the group of C8-30alkyl-(meth)acrylate,8-30alkylalkoxysilane (meth)acrylate, C8-30alkyl-(meth)acrylamido,8-30alkylalkoxysilane (meth)acrylamides,8-30alkyl(IU is)allylation and C 8-30alkylalkoxysilane (meth)allylation, and miscible with water volatile organic liquid, characterized in that the organic polymer is present as discrete particles with an average cross-sectional dimension of less than 10 microns.

Preferably volatile organic liquid selected from group C1-5alcohols, With3-5ketones, With2-5ethers and C2-5esters.

Moreover, the liquid molding composition is usually a stable dispersion of polymer particles. Thus, the dispersed polymer particles remain suspended and are largely free from settling to the bottom.

Preferably, the dispersion is stable for at least 30 days. More preferably, the dispersion is stable for at least 6 months, preferably 12 months.

The composition may contain at least 20 wt.% water relative to the total weight of the composition. Preferably, the amount of water in the composition is from 20 to 40 wt.%, more preferably from 25 to 30 wt.%.

The composition comprises dispersed particles of a water-soluble or vodosmavaema polymers. The polymers may be entirely formed from Ethylenediamine water-soluble monomer or of a mixture of Ethylenediamine water-soluble monomers. Rastvorimost the polymer in water is expressed through the monomer, having a solubility of at least 10 wt.% in deionized water at a temperature of 25°C.

Not soluble in water Ethylenediamine monomers comprise from 10 to 75 wt.%. Preferably, despite the fact that the share ethyleneamines water-insoluble monomer is from 10 to 50 wt.%, more preferably the content is from 20 to 40 wt.%, even more preferably about 30 wt.%.

It is also possible to include in the mixture of monomers Ethylenediamine amphiphilic monomers, such as8-30alkylalkoxysilane (meth)allyl ethers,8-30alkylalkoxysilane (meth)acrylate and C8-30alkyl ethoxylated (meth)acrylamide. Usually such ethyleneamines amphiphilic monomer can be represented as a mixture of monomers in an amount up to 20 wt.%, preferably from 1 to 15 wt.%, more preferably from 5 to 10 wt.%.

Preferably, the polymer contains from 25 to 75 wt.%, preferably from 50 to 60 wt.%, the monomer or mixture of monomers selected from the group of (meth)acrylamide, (meth)acrylic acid or its salts, and from 25 to 75 wt.%, preferably from 40 to 50 wt.% monomer or monomers selected from the group of C8-30alkylalkoxysilane (meth)acrylate,8-30alkylalkoxysilane (meth)acrylamides,8-30the alkyl(meth)allyl ethers and C8-30alkylalkoxysilane (meth)allyl ether is.

In those cases where the polymer is formed from a higher proportion of water-soluble polymer, for example, more than 60 wt.%, especially more than 70 or 80 wt.%, it is advisable to choose a branched or cross-linked polymer. This can be achieved by the inclusion in the monomer mixture polyethyleneimine monomer. Polyethyleneimine monomer, for example, there may be a connection with at least two Ethylenediamine shares. Usually such monomers include methylene-bis-acrylamide, chloride of tetraalkylammonium, divinylbenzene. The number polyethyleneimine monomer typically ranges from 100 ppm to 5 wt.%, for example, from 1000 ppm to 2 wt.%, especially about 1 wt.%.

It is also possible to provide a staple in other ways, for example, multifunctional compounds reacting with two or more molecules of the monomer, or more groups of the polymer. For example, it is possible to achieve cross-linking of the polymer, using compounds of polyvalent metals, for example, aluminum compounds or zirconium, and suitable for the reaction groups are the carboxylic acid group.

Miscible with water, the organic liquid can be1-5alcohol,3-5the ketone or2-5the ether. For example, methanol, ethanol, n-propanol, isopropanol, tertbutanol, acetone, dimethyl ether, metaliteracy ether, diethyl ether, isopropylamino the initial ether, and other volatile alcohols, ketones or esters, miscible with water.

The method also provides for the preparation of injection-molding a liquid composition containing water, a water-soluble or fotosprivadas organic polymer, miscible with water volatile organic liquid from group C1-5alcohols, With3-5ketones, C2-5esters and C2-5esters, characterized in that the organic polymer is present as discrete particles with an average cross-sectional dimension of less than 10 microns.

The composition is prepared by making a solution Ethylenediamine monomer or monomers in a mixture of water and at least one1-5alcohol,3-5ketone,2-5of ester and C2-5ether and, preferably, in the presence of surfactant or stabilizer polymerization. When the mixture of the stabilizer can be up to 2 wt.% in relation to the total weight of water and organic liquid. Typically, the surfactant is added in an amount of from 0.25 to 1 wt.%. Can be used any known, commercially available surfactants that provide a dissolution or a mixture of water and organic liquid.

The polymerization may be performed by any standard method. For example, polymerization can be initiated by standard redox initiator pair, optional, using termicheskogo initiation. The number of initiators is usually not more than 0.5 wt.% with respect to the total weight of monomer, typically between 0.005 and 0.05 wt.%.

During polymerization of the deposited finely dispersed particles of the polymer in a mixture of water and organic liquid forms a stable dispersion of polymer particles with an average cross-sectional dimension of less than 10 microns. Preferably, the transverse size of the particles is in the range from 500 nanometers to 2 microns, more preferably between 750 nanometers and 1 micron.

Another aspect of the invention relates to a method for improving moisture resistance and water resistance of the products and/or prevention of water penetration of products, which consists in contact of this material with injection liquid composition that includes a water-soluble or fotosprivadas organic polymer formed from a mixture of monomers, including

from 25 to 90 wt.% monomer or monomers selected from the group consisting of (meth)acrylamide, (meth)acrylic acid or its salts,

from 10 to 75 wt.% monomer or monomers selected from the group consisting of C8-30alkylalkoxysilane (meth)acrylate, C8-30alkylalkoxysilane (meth)acrylamides,8-30the alkyl(meth)allyl ethers and C8-30alkylalkoxysilane (meth)allyl ethers,

miscible with water volatile organic liquid, a selected is from the group With 1-5alcohols, With3-5ketones, With2-5esters and C2-5ethers in which the polymer is present as discrete particles with an average cross-sectional dimension of less than 10 microns.

The polymer may be in the form of the free acid, but preferably in the form of a salt of an alkali metal or ammonium salts, more preferably sodium or potassium.

In another aspect the product is in contact with the composition, representing a solution of water-soluble organic polymer formed from water-soluble and, optionally, water-insoluble monomers. The polymer solution may also contain miscible with water volatile liquids, especially C1-5alcohols3-5ketones, With2-5esters and C2-5the ethers.

Thus, the composition used in this method contains miscible with water and organic liquid, typically selected from the group of C1-5alcohols, With3-5ketones, C2-5esters and C2-5esters. In particular, they include methanol, ethanol, n-propanol, isopropanol, tert-butanol, acetone, methyl acetate, ethyl acetate, dimethyl ether, metaliteracy ether, diethyl ether, isopropylethylene ether and other miscible with water, volatile alcohols, esters or ketones.

However, in a preferred aspect, the material is in contact with the composition, the which the polymer is not a solution, but exists in the form of a dispersion. Typically the polymer is a separate particles with an average cross-sectional dimension of less than 10 microns.

In another preferred form, the product is in contact with a composition containing water, a water-soluble or fotosprivadas organic polymer, miscible with water and organic liquid from group1-5alcohols, With3-5ketones, With2-5esters and C2-5esters, in which the polymer is present in the form of separate particles with an average cross-sectional dimension of less than 10 microns.

Alternatively, the product is in contact with the dispersion or emulsion or a water-soluble or fotosprivadas polymer in a liquid hydrocarbon medium. Such polymers can be prepared by polymerization of water soluble monomers, dispersed or emulsified in a hydrocarbon fluid, water in oil emulsion. Typically, these polymers can also be crosslinked by the inclusion of cross-linking agents. A detailed description is given in patent EP-A-202780.

Unexpectedly it was found that the resistance to water of different materials, including optical fibers and other components of fiber optic cable may be increased by the use of water injection compositions containing water, especially water in an amount of at least 20 wt.% with respect to the entire weight of the composition. PR is doctitle the water content in the composition is in the range from 20 to 40 wt.%, more preferably in the range from 25 to 30 wt.%.

In General, the composition used in the method of improving moisture resistance and water resistance of the product and/or prevent access of water into the product, comprises dispersed particles of a water-soluble or fotosprivadas polymer.

The polymers can be formed entirely of water-soluble Ethylenediamine monomers.

In addition to water-soluble Ethylenediamine monomers or mixtures of monomers may also include some water-insoluble Ethylenediamine monomers. In those cases, when included water-insoluble Ethylenediamine monomers, it is preferable that they are present in an amount up to 75 wt.%. Preferably the amount of water-insoluble Ethylenediamine monomers between 10 and 50 wt.%, preferably between 20 and 40 wt.%, more preferably about 30 wt.%. Examples of water-insoluble Ethylenediamine monomers include styrene, vinyl acetate, Acrylonitrile, methacrylic acid, in the form of the free acid, acrylic esters such as methyl methacrylate, butyl acrylate, 2-acrylate, n-octylacrylate, dodecylamine, laurelcrest, stearylamine. Also for the purposes of the invention are suitable for many other acrylic esters.

Also in the monomer mixture may include water-insoluble Ethylenediamine amphiphilic mo the Windows, such as8-30alkylalkoxysilane (meth)allyl ethers,8-30alkylalkoxysilane (meth)acrylate and C8-30alkylalkoxysilane (meth)acrylamide. Typically, such water-insoluble ethyleneamines amphiphilic monomer may be present in the mixture of monomers in an amount up to 20 wt.%.

Preferably, its content must be between 1 and 15 wt.%, more preferably between 5 and 10 wt.%.

In one preferred composition, the polymer is formed from a Monomeric mixture consisting of 25-90 wt.% monomer or monomers selected from the group of (meth)acrylamide, (meth)acrylic acid or its salts, 10-75 wt.% monomer or monomers selected from the group of C8-30the alkyl(meth)acrylates, With8-30alkylalkoxysilane (meth)acrylate,8-30the alkyl(meth)acrylamides,8-30alkylalkoxysilane (meth)acrylamides,8-30the alkyl(meth)allyl ethers and C8-30alkylalkoxysilane (meth)allyl ethers.

Preferably, the polymer includes from 25 to 75 wt.%, preferably from 50 to 60 wt.% monomer or monomers selected from the group of (meth)acrylamide, (meth)acrylic acid or its salts, and from 25 to 75 wt.%, preferably from 40 to 50 wt.% monomer or monomers selected from the group8-30the alkyl(meth)acrylates, C8-30alkylalkoxysilane (meth)acrylate,8-30the alkyl(meth)acrylamido 8-30alkylalkoxysilane (meth)acrylamides,8-30the alkyl(meth)allyl ethers and C8-30alkylalkoxysilane (meth)allyl ethers.

In those cases where the polymer is formed from a water soluble monomer a higher proportionality, for example, more than 60 wt.%, especially more than 70 or 80 wt.%, preferably the use of a branched or crosslinked polymer. The content of the crosslinking agent depends on the individual monomer and the type of crosslinking agent. If the polymer is too extensive, it prevents sufficient swelling and can lead to the inability to provide a sufficient moisture resistance of the product.

In General, the method is applicable to products that contain moisture sensitive materials inside a more durable body, which is prone to tearing, breaking or cracking, leading to water leakage. The method is applicable to products which contain glass, plastic, rubber and metal. Usually the method is private value when the material is a sheet, fiber or cable. For example, the method is especially suitable for electrical cables and fiber optic cables, and components.

A further aspect of the invention refers to a process of imparting water resistance to one or more internal components of the cable. The above process involves himself in contact, at least one of the mentioned internal components with injection liquid composition containing water, a water-soluble or fotosprivadas polymer and organic, miscible with water, the liquid of the group With1-5alcohols, With3-5ketones and C2-5esters, passing the coated internal components through a stage of drying, the formation of the internal components in the above the cable and is characterized by the fact that the organic polymer is present in the injection molding of liquid compositions in the form of discrete particles with an average cross-sectional dimension of 10 microns or less.

The components of the cable can be any of the internal components of the cable. For example, in cases where the cable is fiber optic cable, the process can be applied to any optical fibers or other fibers or strands inside the cable. The process may also be applied to individual components within the electrical cables.

It is desirable that the components of the cable extends through the covering and the die plate, the feed liquid composition. Then covered component cable passes through a stage of heating, where the composition is dried.

In the process, the composition must be sufficiently fluid to be transferred from the coating die at a piece of cable. The polymers can be formed entirely of ethyleneamines of motorstv the action of a monomer or of a mixture of Ethylenediamine water-soluble monomers.

The process has a private value for fiber optic cables. It was found that the process according to the invention provides a fibre-optic cables with a high degree of moisture resistance and compensates for the serious disadvantages of other known processing methods.

Covered components of the cable can be dried at a temperature of from 50 to 120°C, preferably from 60 to 90°S, more preferably from 70 to 80°no longer than 10 minutes, preferably not longer than 5 minutes. The drying period can be further shortened, in particular, to 2 minutes, especially from 1 to 2 minutes. This is especially valuable when the coated optical fibers constituting the optical fiber cable.

The invention is confirmed by the following examples.

Example 1

Preparation of polymer And

Preparing Monomeric mixture containing 100.0 weight. parts of acrylamide, 46,7 weight. parts of beginlatex-(25)methacrylate, 23,3 weight. parts of methacrylic acid, 8.0 weight. parts of sodium hydroxide, 191,3 weight. part of tert-butanol, 49.4 weight. parts of water and 1.7 weight. parts of chloride of tetraalkylammonium.

The initiator mixture is prepared by mixing 35.5 weight. parts of tert-butanol, 13,8 weight. parts of water and 3.73 weight. parts tributylphosphate.

Solvent mixture is prepared by mixing 103,8 weight. parts of tert-butanol, 45,5 weight. parts of water and 0,93 weight. parts tributylphosphate.

The mixture solution of the residents placed in the flask to 700 ml and heated. The monomer mixture is added over 3 hours while adding the initiator mixture for 4 hours under heating. A stable dispersion of polymer is formed in a continuous stream of tert-butanol and water.

Example 2

Preparation of polymer

Example 1 is repeated, except 0.85 weight. parts instead of 1.7 weight. parts of chloride of tetraalkylammonium. A stable dispersion of polymer is formed in a continuous stream of tert-butanol and water.

Example 3

Preparation of polymer

Example 1 is repeated, except that the chloride of tetraalkylammonium not used. A stable dispersion of polymer is formed in a continuous stream of tert-butanol and water.

Example 4

Preparation of polymer D

Example 1 is repeated, except that instead of tert-butanol is used ethanol and taken 4,25 weight. part of chloride of tetraalkylammonium instead of 1.7 weight. parts.

Example 5

Preparation of polymer E

Monomer mixture is prepared by mixing 1301,2 weight. parts of acrylic acid, 128,7 weight. parts of hydroxyethylacrylate.

The initiator mixture is prepared by mixing 510,7 weight. parts of water and 4.1 weight. part of ammonium persulfate.

Solvent mixture is prepared by mixing 5801,3 weight. parts of water, 4.1 weight. part of EDTA sodium and 2.45 weight. parts of ammonium persulfate.

Solvent mixture add aetsa in the flask to 1000 ml and heated to 85° C. the Monomer mixture is added dropwise within 2 hours initiator mixture was added over 2.5 hours, keeping the temperature. To this is added in two stages 50% solution of potassium hydroxide. The resulting aqueous solution of the polymer can be cooled, and then its pH is brought to 8 to 8.5. To do this, add the carbonate of ammonium zirconium in an amount of 0.2 wt.% on a dry mass.

Example 6

Preparation of polymer F

100 g associated linear copolymer of ethyl acrylate/methacrylic acid/stearylamine-(10)allyl ether with weight ratio of 50/40/10 dissolved in a mixture of 12.1 g of sodium hydroxide solution (46%), and 20.3 g of water and 33.1 g of isopropanol.

Example 7

Preparation of polymer G

Example 6 is repeated, except that use of 100 g sewn associate copolymer of ethyl acrylate/methacrylic acid/stearylamine-(10)allyl ether/diallylphthalate with weight ratio 50/40/10/0,02 instead of the associated linear copolymer.

Example 8

Preparation of polymer N

Monomeric mixture comprising 100 weight. parts of dimethylaminoethylmethacrylate, stereoselectivity by methyl chloride, 0.2 weight. parts of methylene-bis-acrylamide, 1 weight. part citric acid and 36.6 weight. parts of water, was mixed under stirring with 200 weight. parts ethyl acetate/dimethylaminoethylmethacrylate molecular weight arr is siteline 20000.

The dispersion was degassed using nitrogen, and then polymerization was initiated by the continuous feed of 0.1% aqueous solution of metabisulfite sodium and 0.1% tertiary butylhydroperoxide a speed of 0.1 ml/min at an initial temperature of 10°up until polymerization is not completed at 40°C.

Example 9

Preparation of polymer I

Water-oil emulsion of a copolymer containing 50 wt.% dimethylaminoethylacrylate and 50 wt.% acrylamide, and 250 ppm methylene-bis-acrylamide, prepared in accordance with patent EP-A-202780.

Example 10

Testing water-repellent properties of the polymers A-G

For each test case, the channel width of 5 mm, a depth of 200 microns and a length of 600 mm, done in pure polyester block was filled to a depth of 100 μm of each of the liquid polymer compositions. The liquid polymer composition was dried, and then pure polyester plate was fixed on top of a polyester block so as to form a channel open at both ends. Polyester block is then set so that the channel was vertical. In the top hole channel is funnel. Then 20 ml of water containing the dye is poured into the funnel. The distance traveled by water, is measured; the results are shown in Table 1.

Table
PolymerLength, mm
And132
In193
11
D242
E110
F194
G162
N23
I86

Effective water-blocking polymers prevent the passage of water through the channel. The shorter the distance the water, the more effective the polymer.

Example 11

The drying time for each liquid polymeric composition

The sheet is covered by each type of liquid polymer composition, and then dried at a temperature of 110°C. the Time required for drying, are shown in Table 2.

Table 2
PolymerDrying time,
And39
In33,5
45
D34,5
E586
F467
G467
N3
I105

As can be seen, the best results time drying poly the agreement compositions obtained for polymers A-D and polymer N.

1. Casting a liquid composition containing water, a water-soluble or fotosprivadas organic polymer in which the polymer is formed from a mixture of monomers containing from 25 to 90 wt.% monomer or monomers selected from the group of (meth)acrylamide, (meth)acrylic acid or its salts, and from 10 to 75 wt.% monomer or monomers selected from the group consisting of C8-30alkylalkoxysilane (meth)acrylates, C8-30alkylalkoxysilane (meth)acrylamide, C8-30the alkyl(meth)allyl ethers and C8-30alkylalkoxysilane (meth)allyl ethers, and miscible with water volatile organic liquid, characterized in that the organic polymer is present as discrete particles with an average cross-sectional dimension of less than 10 microns.

2. Injection molding liquid composition according to claim 1, characterized in that the volatile organic liquid selected from the group1-5alcohols, With3-5ketones, C2-5esters and C2-5simple ethers.

3. Injection molding liquid composition according to claim 1 or 2, characterized in that it contains at least 20 % of water relative to the total weight of the composition.

4. Injection molding liquid composition according to any one of claims 1 to 3, characterized in that the polymer is formed from Ethylenediamine water-soluble monomer or mixture of monomers.

5. Injection molding liquid composition according to any one of claims 1 to 4, x is bacterias fact, the polymer is crosslinked.

6. A way to improve the water or water resistance of the products and/or prevent water penetration of the product by contacting the specified products with injection liquid composition that includes a water-soluble or fotosprivadas organic polymer formed from a mixture of monomers comprising from 25 to 90 wt.% monomer or monomers selected from the group consisting of (meth)acrylamide, (meth)acrylic acid or its salts, and from 10 to 75 wt.% monomer or monomers selected from the group consisting of C8-30alkylalkoxysilane (meth)acrylate,8-30celecoxibonline (meth)acrylamides,8-30the alkyl(meth)allyl ethers and C8-30alkylalkoxysilane (meth)allyl ethers, miscible with water volatile organic liquid selected from the group1-5alcohols, With3-5ketones, With2-5esters and C2-5ethers, and the polymer is present as discrete particles with an average cross-sectional dimension of less than 10 microns.

7. The method according to claim 6, characterized in that the composition contains at least 20 % of water relative to the total weight of the composition.

8. The method according to any of PP and 7, characterized in that the product is made from a material selected from glass, plastic, rubber and metal.

9. The method according to any of PP-8, characterizes is the, the product has the form of a sheet, fiber or cable.

10. The method of imparting water resistance to one or more internal components of the cable, comprising contacting at least one of the mentioned internal component injection-molding a liquid composition comprising water, a water-soluble or fotosprivadas organic polymer and miscible with water volatile organic liquid selected from the group1-5alcohols, With3-5ketones, With2-5esters and C2-5ethers, passing the coated internal components through a stage of drying, and then molding the above-mentioned cable, characterized in that the organic polymer is present in the injection molding of liquid compositions in the form of discrete particles with an average cross-sectional dimension of less than 10 microns.

11. The method according to claim 10, characterized in that the polymer is formed from a mixture of monomers comprising from 25 to 90 wt.% monomer or monomers selected from the group consisting of (meth)acrylamide, (meth)acrylic acid or its salts, and from 10 to 75 wt.% monomer or monomers selected from the group consisting of C8-30alkylalkoxysilane (meth)acrylate,C8-30alkylalkoxysilane (meth)acrylamides, C8-30the alkyl(meth)allyl ethers and C8-30alkylalkoxysilane (meth)allyl ethers.

12. The method according to PP and 11, characterized in that the internal components are fiber optic fiber optic cable.

13. The method according to any of PP and 11, characterized in that the stage of drying is carried out for not more than 10 minutes at a temperature of from 50 to 120°C.

14. The method according to any of PP-13, characterized in that the stage of drying is carried out for not more than 5 minutes at a temperature of from 50 to 120°C.

15. The method according to any of PP-14, characterized in that the stage of drying is carried out for not more than 2 minutes at a temperature of from 50 to 120°C.



 

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14 cl, 4 ex

FIELD: polymer production.

SUBSTANCE: invention relates to water-soluble powder polymer compositions useful as flocculants for dehydration of solids-containing slurries or sludges. Compositions are prepared via continuous polymerization of at least one unsaturated monomer, wherein at least one polymerization-affecting parameter is varied in accordance with a repetitive scheme. For instance, monomer concentration, molecular weight regulator amount, monomer solution pH value, and/or monomer solution composition can be varied.

EFFECT: expanded flocculation possibilities and reduced sensitivity to composition of fluids to be treated.

14 cl, 4 ex

The invention relates to a device for receiving the sheet of polymeric materials in vertical forms

The invention relates to the field of solid state ionic conductors, namely, polymer electrolytes

The invention relates to the field of solid state ionic conductors, namely, polymer electrolytes

The invention relates to a method and apparatus for receiving a sheet of polymeric materials in vertical forms

The invention relates to materials intended for the production of hard copies of the surface of products in their metrological control

The invention relates to processed from the melt of thermoplastic compositions for the manufacture of products having a surface with a relatively low gloss

Acrylic material // 2236424
The invention relates to flame-retardant acrylic material and can be used in buildings, automotive headlights, scale devices, reflectors, lenses, medical diagnostic equipment, signs, bathing and sanitary equipment and when glazing

FIELD: polymer production.

SUBSTANCE: invention relates to water-soluble powder polymer compositions useful as flocculants for dehydration of solids-containing slurries or sludges. Compositions are prepared via continuous polymerization of at least one unsaturated monomer, wherein at least one polymerization-affecting parameter is varied in accordance with a repetitive scheme. For instance, monomer concentration, molecular weight regulator amount, monomer solution pH value, and/or monomer solution composition can be varied.

EFFECT: expanded flocculation possibilities and reduced sensitivity to composition of fluids to be treated.

14 cl, 4 ex

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