Water-soluble glue

FIELD: chemistry.

SUBSTANCE: group of inventions relates to an aqueous adhesive composition for gluing various paper products, as well as to a method of producing a substrate, on which a paper label is placed, to a pasted label having resistance to a mixture of ice water and a method of removing a paper label from the substrate. The aqueous adhesive composition includes emulsion polymer and epoxysilane in predetermined amounts, and the adhesive composition contains substantially no crosslinking reagent. The method of producing a substrate, on which the paper label is located, involves producing an adhesive composition and applying this composition to the paper label, then drying it, and applying a label with the adhesive to the substrate. The method of removing a paper label from the substrate includes fabricating the substrate and processing the label to remove it.

EFFECT: stability in ice water and removability of labels.

3 cl, 1 tbl, 4 ex

 



 

Same patents:

FIELD: chemistry.

SUBSTANCE: invention relates to versions of pressure-sensitive glue and versions of method of thereof obtaining on the basis of biological raw material. Method of glue obtaining consists in the fact that reaction of epoxidised natural oil or fat with, at least, one alcohol, or amine, or aminoalcohol, or with their combination is performed. First reaction component is obtained by epoxidation of natural oil or fat.

EFFECT: invention makes it possible to elaborate economically profitable method of obtaining glue, capable of biological decomposition.

65 cl, 11 ex, 5 tbl

FIELD: technological processes.

SUBSTANCE: group of inventions relates to an adhesive tape, method of its manufacturing and method of automatic roll replacement. An adhesive tape (10) for use in devices with automatic roll replacement, including a double-sided adhesive tape (100) and a separated tape (200) from several self-adhesive layers. To produce an adhesive tape, which provides for easy and reliable application without sticking to the rear side of the upper layer of the roll material, at least the third self-adhesive layer (230) of the separated tape (200) has smaller width compared to a fixing layer (220) of the separated tape (200). Thus practically non-sticky area (240) is produced on the lower surface (212) of the separated layer (210). The method to manufacture an adhesive tape consists in fixation of different layers and making a gash of the third self-adhesive layer (230) of the separated tape (200). The method of automatic roll replacement consists in connection of wound roll material with other roll material and attachment of the adhesive tape to the end of the upper web of the wound roll material.

EFFECT: invention provides for easy and reliable application of adhesive tape in devices with automatic roll replacement.

14 cl, 10 dwg

FIELD: chemistry.

SUBSTANCE: label assembly comprises a facing layer and an adhesive layer activated on exposure to heat, and a layer of a functional coating between the adhesion layer and facing layer, wherein the adhesion layer activated on exposure to heat contains a polymer base containing at least one lower alkyl acrylate, styrene, methyl methacrylate, methacrylic acid, acrylic acid, at least one multi-functional monomer and at least one chain transfer agent, a plasticising agent and an adhesiveness-enhancing agent.

EFFECT: higher adhesiveness.

3 cl, 29 dwg, 21 tbl

FIELD: chemistry.

SUBSTANCE: invention relates to a method for producing a foam composite element, comprising the steps of providing a cover layer, the applying of a bonding agent and the applying of a foam material layer comprising polyurethane and/or polyisocyanurate to the bonding agent. The bonding agent is selected from at least one compound selected from the group comprising polyetherpolyol (B.1), polyurea dispersion (B.3) and polyesterpolyol (B.4), wherein polyetherpolyol (B.1) is selected fro a group consisting of polyoxypropylene polyol, polyoxypropylene-polyoxyethilene polyol and polyether carbonate polyol. The invention also relates to the foam composite elements obtained by means of the method according to the invention.

EFFECT: result is improved adhesion between the foam and the facings in foam composite elements and at the same time the occurrence of not more than minor faults at the foam/facing interface.

11 cl, 2 tb l, 6 ex

FIELD: chemistry.

SUBSTANCE: fire-resistant adhesives contain a non-halogenated fire-resistant composition which consists of a combination of melamine phosphate and melamine cyanurate.

EFFECT: invention provides acceptable efficiency as an adhesive or tape.

8 cl, 3 tbl, 8 ex

FIELD: chemistry.

SUBSTANCE: invention relates to thermosolificating adhesive composition, including from 20 to 65 wt % of polyether (A), which includes 2 hydrolysable terminal groups of alkoxysilane type, which has viscosity, measured at 23C with application of Brookfield viscometer and spindle No. 7, rotating at rate on average 20 rev/min, in range from 25 to 40 Pa and formula (I), from 15 to 80 wt % of compatible stickiness-increasing resin (B), and from 0.01 to 3 wt % of curing catalyst (C). Self-adhesive substrate, covered with solidified adhesive composition, and its application for production of self-adhesive labels and/or tapes are also claimed.

EFFECT: invention provides reduction of solidification time with preservation of adhesive properties, as well as preservation of cohesion in application of self-adhesive substrate in wide range of temperatures.

12 cl, 2 tbl, 5 ex

FIELD: chemistry.

SUBSTANCE: invention relates to an adhesive cushion based on epoxy resins and glass fibre cloth, used to produce multilayer printed-circuit boards. The adhesive cushion is made using glass fibre cloth soaked with a mixture of epoxy diane resin, 4,4'-diaminodiphenylsulphone, nickel acetylacetonate and spherical particles of butadiene nitrile styrene carboxylate polymer with a diameter of 10-8-10-7 m, with the following ratio of components, pts.wt: epoxy diane resin 100, polymer 5-20, 4,4'-diaminodiphenylsulphone 15, glass fibre cloth 130, nickel acetylacetonate 1.

EFFECT: reducing warping of the multilayer printed-circuit board to no more than 0,1 mm.

1 tbl, 3 ex

FIELD: process engineering.

SUBSTANCE: invention relates to laminar materials for packages, particularly, to production of laminar re-sealing material. This material comprises substrate ply, soldering ply and glue ply arranged there between. Glue ply represents a thermal adhesive or pressure-sensitive glue with shear rate of 10-150 min at 40C at the load of 1000 g at 40C on test site of 12.5 mm 25 mm. Soldering ply comprises PE copolymer ply and, if required, extra PET, PE ply, say, LDPE and/or PP. This process allows application of thermal adhesive or pressure-sensitive glue, then soldering ply in a single process to produce re-sealing laminar material. Said laminar material can be used as a re-sealing cover at, for example, packing pan.

EFFECT: ruled out film separation.

9 cl, 4 dwg

FIELD: chemistry.

SUBSTANCE: invention relates to the field of obtaining glue compositions, used in the production of adhesive polyvinylchloride (PVC) tapes, intended for wrapping gas- and oil-pipelines as an insulating and protective coating, as well as for carrying out repair works. The glue composition includes a perchlorovinyl resin, a plasticiser and an adhesion-improving additive. The composition additionally contains dichlorocyclopropanated 1,2-polybutadiene or dichlorocyclopropanated syndiotactic 1,2-polybutadiene in an amount from 1 to 15 wt.p. Dichlorocyclopropanated 1,2-polybutadiene with the weight average molecular weight from 8000 to 120000 is used. A degree of dichlorocyclopropanation in dichlorocyclopropanated 1,2-polybutadiene constitutes from 2.5 to 35.9%.

EFFECT: increased adhesion of an adhesive PVC tape to a metal surface.

3 cl, 1 tbl, 12 ex

FIELD: chemistry.

SUBSTANCE: pressure-sensitive tape for anticorrosion protection of steel pipes, used mainly in cases of repair and exploitation, contains vinyl base - tape, laminated with adhesive based on nitrile rubber, of the following composition: from approximately 30.7 to approximately 34.0% (wt/wt) of solid butadiene-acrylnitrile rubber (NBR); from approximately 0.57 to approximately 0.63% (wt/wt) of antioxidant; from approximately 9.7 to approximately 12.9% (wt/wt) of hydrocarbon resin; from approximately 1.52 to approximately 1.68% (wt/wt) of zinc oxide; from approximately 8.7 to approximately 9.5% (wt/wt) of liquid butadiene-acrylnitrile ribber (NBR); from approximately 4.0 to approximately 4.4% (wt/wt) of aluminium hydrosilicate; from approximately 5.5 to approximately 7.5% (wt/wt) of diisononylphthalate; from approximately 0.66 to approximately 0.74% (wt/wt) of soot; from approximately 1.5 to approximately 1.7% (wt/wt) of amorphous silica; and from approximately 25.8 to approximately 38.8% (wt/wt) of magnesium and calcium carbonate. It is ideal to apply tape in combination with primer, which enhances adhesion between pipe and adhesive part of tape.

EFFECT: good ability of tape to correspond to irregular surfaces, good elasticity, good shock-resistance, excellent adhesion to pipe, good cathode separation.

3 cl, 3 dwg, 3 tbl

FIELD: chemistry.

SUBSTANCE: invention relates to pressure sensitive adhesives, suitable for use on a wide variety of substrates, including both high surface energy and low surface energy substrates. Pressure sensitive adhesives comprise an acrylate polymer and surface-modified nanoparticles. The surface-modified nanoparticles comprise a nanoparticle comprising a silica surface and surface modifying groups, covalently bonded to the silica surface of the nanoparticle. At least one surface modifying group is a polymeric silane surface modifying group. At least one surface modifying group is a non-polymeric silane surface modifying group.

EFFECT: disclosure also provides a method of preparing pressure sensitive adhesives, including exposing them to UVA and UVC radiation.

21 cl, 2 dwg, 12 tbl

FIELD: chemistry.

SUBSTANCE: invention relates to polymer chemistry and specifically to adhesive compositions based on a copolymer of butyl methacrylate and methacrylic acid, used for bonding different substrates (metal, wood, ceramic etc.). The adhesive composition contains (pts.wt) 20.0-30.0 copolymer of 95 wt % butyl methacrylate with 5 wt % methacrylic acid (BMK-5); 3.0-10.0 organic silane of formula (C2H5O)4-n-Si-[OSi(OC2H5)3]n, where n=0-2; 0.5-3.0 water; 2.0-10.0 aerosil and an organic solvent - 46.99-67.5.

EFFECT: use of the organic silane of given formula and water in the adhesive composition increases adhesive strength and heat resistance of the adhesive composition based on the BMK-5 copolymer.

2 tbl, 17 ex

FIELD: chemistry.

SUBSTANCE: described is an adhesive composition for gluing to metal, containing: (a) at least one methacrylate radical polymerisation monomer; (b) an ambient temperature radical polymerisation initiator system containing at least one oxidant and at least one reducing agent; (c) a photoinitiator; and (d) an epoxy compound; where the adhesive will at least partially solidify at temperature between 10 and 40C through a radical polymerisation catalyst system which is activated at ambient temperature. Described also is a two-component curing adhesive for gluing to metal, containing: (a) a first component containing (i) at least one methacrylate radical polymerisation monomer, (ii) at least one reducing agent and (iii) a photoinitiator and (b) a second component containing an oxidant which is reactive at ambient temperature with respect to the reducing agent and forms free radicals capable of initiating radical polymerisation and facilitate chain growth, and an epoxy compound; where the adhesive will at least partially solidify at temperature between 10 and 40C through a radical polymerisation system activated at ambient temperature.

EFFECT: obtaining an adhesive which does not require additional heat for initiating curing.

24 cl, 6 ex

FIELD: chemistry.

SUBSTANCE: composition contains the following in wt %: 5-80 polyester A copolymer obtained as a result of condensation with itaconic acid; 5-80 (meth)acrylate homopolymer and/or copolymer B consisting of more than 50 wt % monomers of formula I where R1 denotes hydrogen or methyl and R2 denotes an alkyl residue, an aliphatic or aromatic residue with 1-5 carbon atoms and 10-80 graft copolymer from type A polymer and type B polymer (polymer AB). Polyester A has a straight or branched structure with OH number from 5 to 150 mg KOH/g, and acid number less than 10 mg KOH/g, and number-average molecular weight 700-25000 g/mol. Content of itaconic links in the polyester copolymer per total content of polycarboxylic acids ranges from 0.1 mol % to 20 mol %.

EFFECT: invention enables to obtain well compatible polymer structures which do not contain styrene or derivatives thereof, based on a polyester graft polymethacrylate copolymer.

17 cl, 3 tbl, 9 ex

FIELD: electricity.

SUBSTANCE: adhesive tape includes adhesive polymeric resin on acryl basis and conductive fillers. Adhesive polymeric resin includes polymer obtained by copolymerisation of alkyl acrylate monomer having C1-C14 alkyl group with polar copolymerised monomer. Conductive filler is chosen from the group consisting of precious metals, base metals, precious or base metals with coating from precious metals, precious and base metals with coating from base metals, non-metals with coating from precious and base metals, conductive non-metals, conductive polymers, and their mixtures. Conductive fillers are oriented in adhesive tape both on longitudinal and in transverse directions. Electrically conducting adhesive tape is obtained by mixing monomers for preparation of adhesive polymeric resin with conductive fillers. Mixture in the form of sheet is formed. Both surfaces of the sheet are illuminated with light in order to perform photochemical polymerisation of adhesive polymeric resin. Each surface of the sheet is illuminated with light of various intensity. Light is emitted selectively to some part of the sheet of surface. Adhesive tape has flexibility and more effective electric conductivity.

EFFECT: adhesive tape can be used in electronic components, as adhesive tape screening electromagnetic waves, which provides the possibility of easy attachment and detachment.

18 cl, 3 tbl, 6 ex

FIELD: chemistry.

SUBSTANCE: composition contains epoxy diane resin, oligoether acrylate, curing agent, initiator and solid filler. The filler is silica gel or aerosil. The initiator is in form of benzoin or dimethoxyphenyl acetophenone ethers. Oligoether acrylate is selected from a group of dimethacrylate ethers. The curing agent used is aliphatic or aromatic diamine and aliphatic or aromatic tertiary amine. The photocurable adhesive composition is obtained by mixing all components until their complete dissolution. The obtained mixture is put between glued surfaces and exposed to UV light for not less than 5 min. Further, thermal post-polymerisation is carried out at temperature not higher than 50C, followed by cooling and holding. The invention is used in production of organic light-emitting diodes to prolong their service life.

EFFECT: good adhesion to glass, weather resistance, low chemical aggressiveness, high water resistance and crack resistance when pressed between glass plates.

8 cl, 3 tbl, 3 ex

FIELD: polymerization processes.

SUBSTANCE: invention relates to two-component composition used to initiate curing of one or more polymerizable monomers that are cured when affected by free radicals, which composition consists of organoborane-amino complex and an isocyanate capable of destroying organoborane-amino complex, wherein equivalent ratio of amine nitrogen atoms to boron atoms ranges from more than 4.0:1 to 20.0:1. In another embodiment of invention, subject of invention is two-component composition for use as sealing materials, coatings, primers for modifying polymer surfaces, and as molded resins, which composition consists of component 1: organoborane-amino complex wherein ratio of amine nitrogen atoms to boron atoms ranges from more than 4.0:1 to 20.0:1; component 2: one or more monomers, oligomers, or polymers having olefinic instauration, which are able of being subjected to free-radical polymerization; and effective amount of an isocyanate, which can initiate dissociation of complex to free borane for initiation of polymerization of one or more monomers, oligomers, or polymers having olefinic instauration, provided that complex dissociation initiator is stored separately from complex until initiation of polymerization becomes desirable. Such compositions are handling safe, i.e. they are not self-inflammable, stable at or near ambient temperature and so they do not initiate polymerization at or near ambient temperature in absence of complex dissociation initiator. Polymerized composition show good cohesion and adhesion strength. Described are polymerizable composition polymerization process, method of gluing two or more substrates using polymerizable composition; method of modifying polymer surface having low surface energy using polymerizable composition, as well as coating and laminate containing polymerizable composition.

EFFECT: enlarged resource of polymerizable compositions and expanded application areas thereof.

10 cl, 2 dwg, 4 tbl

The invention relates to adhesive compositions based on water dispersion of acrylic copolymer and can be used for gluing PVC materials (films, vacuum forming tiles and t

FIELD: chemistry.

SUBSTANCE: invention relates to pressure sensitive adhesives, suitable for use on a wide variety of substrates, including both high surface energy and low surface energy substrates. Pressure sensitive adhesives comprise an acrylate polymer and surface-modified nanoparticles. The surface-modified nanoparticles comprise a nanoparticle comprising a silica surface and surface modifying groups, covalently bonded to the silica surface of the nanoparticle. At least one surface modifying group is a polymeric silane surface modifying group. At least one surface modifying group is a non-polymeric silane surface modifying group.

EFFECT: disclosure also provides a method of preparing pressure sensitive adhesives, including exposing them to UVA and UVC radiation.

21 cl, 2 dwg, 12 tbl

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