The phosphorus ylides, method of their production and intermediate compounds
The invention relates to new phosphorus ylides F.-ly (I)in which R1, R2and R3represent the amino group R R N, where R' and R" are C1-C6alkyl; R4- H, Me; R5polymer media polystyrene type f crystals of (S)where n, n' and m are integers greater than or equal to 1. Connections F.-ly (I) can be used as subnucleonic strong bases. Also described intermediate compound f-crystals (3)where R1-R5have the above values, Y- anion. 3 S. p. f-crystals, 1 table. Description text in facsimile form (see graphic part). TC
Claims1. The phosphorus ylides General formula (1)(l) in which R1, R2and R3represent the amino group R R N, where R' and R" - C1-C6alkyl;
R4- H, Me;
R5polymer media polystyrene type formula (S)
where n, n' and m are integers greater than or equal to 1.2. The method of obtaining compounds on p. 1, characterized in, che in paragraph 1 values
subjected to interaction with the compound of General formula (2)
where R4and R5are specified in paragraph 1 values;
Y such that Yrepresents an anion,
to obtain a phosphonium salts of the formula (3)
which is treated with a strong base to obtain the compounds of formula (1).3. The compounds of formula (3)
in which R1-R5and Yare specified in paragraph 2 values.
FIELD: ION-EXCHANGE MATERIALS.
SUBSTANCE: invention relates to a process of preparing gel-like cationites for use in treatment and purification processes. Gel-like cationites are prepared by inoculating-incoming process wherein (a) aqueous suspension of microcapsulated cross-linked styrene polymer in the form of granules and containing cross-linking agent is provided as inoculating polymer; (b) inoculating polymer is left to swell in monomer mixture composed of vinyl monomer, cross-linking agent, and radical initiator, namely peracid aliphatic ester; (c) monomer mixture is polymerized in inoculating polymer; and (d)resulting copolymer is functionalized via sulfatization. Process is characterized by that, in step (a), content of cross-linking agent in cross-linked styrene copolymer amounts to 3.5-7 wt % and inoculum-to-income ratio in step (b) amounts to 1:(0.25-1.5).
EFFECT: enabled preparation of gel-like cationites having high osmotic and mechanic stabilities as well as improved oxidation resistance.
7 cl, 9 tbl, 9 ex
FIELD: polymer materials.
SUBSTANCE: invention, in particular, relates to preparation of chlorine-free plastisols based on latex copolymers of styrene, alkyl (meth)acrylates, and (meth)acrylic acids and discloses a plastisol based on styrene/acrylate latex copolymer having morphology of primary "nucleus-shell" particles and organic plasticizer. Plastisol is characterized by including (i) 50-60 wt % of styrene/acrylate latex copolymer with volume-average diameter of primary particles between 450 and 1500 nm and nucleus copolymer-to-shell copolymer mass ratio between 1:10 and 1:25, said nucleus copolymer containing styrene and alkyl (meth)acrylate units at their mass ratio between 35:65 and 70:30, whereas said shell copolymer is constituted by styrene, alkyl (meth)acrylate, and (meth)acrylic acid units at average mass ratio (45-60):(30-50):(5-15), wherein concentration of (meth)acrylic acid units partially neutralized with alkali metal hydroxide (meutralization degree 5-30%) is increased in radial direction of the shell from 0-2.0 to 6.6-25 wt %, and (ii) 40-50 wt % of phthalate- or phosphate-type organic plasticizer representing a mixture of two plasticizers, one being highly compatible with nucleus and shell copolymers and the other being low compatibles at their mass ratio 0.33-2.33. Preparation method is also described.
EFFECT: simplified plastisol preparation procedure and increased viability of plastisol.
5 cl, 2 dwg, 3 tbl, 28 ex
FIELD: polymer production.
SUBSTANCE: invention provides a method for preparing "living" vinyl polymer via "living" radical polymerization characterized by that vinyl monomer is polymerized using organotellurium compound depicted by formula (1) and azo-type polymerization initiator, where R1 represents C1-C8-alkyl, optionally substituted aryl, or aromatic heterocyclic group; each of R2 and R3 represents hydrogen atom or C1-C8-alkyl; and R4 optionally substituted aryl aryl, aromatic heterocyclic group, acyl, oxycarbonyl, or cyano; said organotellurium compound and said azo-type polymerization initiator being used at molar ratio 1:(0.1-100), respectively. "Living" vinyl polymer is also described as well as mixture of organotellurium compound depicted by formula (1) and azo-type polymerization initiator wherein the two components are present at weight ratio as above.
EFFECT: achieved preparation of "living" vinyl polymer with precisely controlled molecular mass and molecular mass distribution.
5 cl, 2 tbl, 32 ex
SUBSTANCE: invention refers to making heat-resistant sulphocation catalysts. There is disclosed method for making heat-resistant sulphocation catalysts containing aromatic rings chemically combined with solid polymer base, at least two groups -SO2OH, by sulphonation of aromatic rings of polymer base followed by desulfonation at higher temperature of those aromatic rings having only one group -SO2OH whereat heat-resistant polymer base is sulphonated, while aromatic rings are sulphonated in two or more stages with gradually increasing sulphonation hardness. The first stage involves soft sulphonation with aqueous sulphuric acid solution concentrated 95 wt % and more at temperature 90°C and less, preferentially 70°C and less. The last stage implies sulphonation with aqueous sulphuric acid solution concentrated 90 wt % and more or with oleum with SO3 concentrated 1 to 30 wt % higher than chemically combined in acid. The catalyst is sequentially washed by dissolved sulphuric acid solution, then by water. Thereafter it contacts at temperature 150 to 200°C with an inert solvent not containing groups neutralising -SO3OH groups and introduced in amount required to remove groups -SO2OH from the aromatic rings containing one group -SO2OH only.
EFFECT: making heat-resistant catalyst of required dimension and/or shape.
8 cl, 1 tbl, 5 ex
SUBSTANCE: invention relates to a polymer nanoparticle having a nucleus/shell configuration with an interphase region between the nucleus and the shell, which contains at least one polymerised monomer selected from a polymerised nucleus monomer and a polymerised shell monomer. The nucleus of the polymer nanoparticle is uniformly cross-linked by at least one cross-linking agent. The average diameter of the polymer nanoparticles can be less than 250 nm. Described also is a rubber composition containing polymer nanoparticles and use thereof to make tyres, as well as methods of producing polymer nanoparticles. To form a uniformly cross-linked nucleus, polymerisation of the nucleus is carried out through step-by-step addition in several loads or batching synchronised amounts of the nucleus monomer and the cross-linking agent. The size, composition and/or configuration of the interphase region is varied, thereby achieving desirable physical and/or chemical properties of the resultant polymer nanoparticles and compositions to which the nanoparticles are added.
EFFECT: improved physical and chemical properties.
45 cl, 6 tbl, 7 ex, 19 dwg
SUBSTANCE: described is a core-cladding emulsive polymerisate with an activator included in the core, which is obtained from polymerising a mixture containing: a) 5-99.9 wt % of one or more mono-functional (meth)acrylate monomers with water solubility of < 2 wt % at 20°C; b) 0-70 wt % of one or more monomers that copolymerisable with monomers a); c) 0-20 wt % of one or more compounds that are di- or multi-vinylenically unsaturated; d) 0-20 wt % of one or more polar monomers with water solubility of >2 wt % at 20°C, selected from (meth)acrylic acid and (meth)acrylamide, and c) 0.1-95 wt % of at least one activator. Wherein components a) to e) amount to 100 wt % of polymerisable components of the mixture, characterised by that e1) the activator is a compound of formula I where R1 is methyl; X is a linear alkanediiyl group with 1-18 carbon atoms; R2 denotes a hydrogen atom or a linear or branched alkyl residue with 1-12 carbon atoms; R3, R4, R5, R6 and R7 independently denote a hydrogen atom and that e2) the activator e) is covalently bonded to the emulsive polymerisate. Also described is a method of producing said emulsive polymerisate by "core-cladding" polymerisation in an aqueous emulsion, wherein components a) to e) at the first step are polymerised in form of a core, and then a mixture of components a) to d) are polymerised thereon as cladding in at least an additional step. Components a) to e) for the core and components a) to d) for the cladding are selected such that in the resultant polymerisate, the glass transition temperature of at least one cladding TGS is higher than the glass transition temperature of the core TGK, wherein the glass transition temperature of at least one cladding TGS is higher than 100°C, wherein the glass transition temperature TG is determined according to the EN ISO 11357 standard. Described is a two- or multi-component system with a controlled working life, which is curable at room temperature using a redox system of initiators containing A) 0.8-69.94 wt % emulsive polymerisate according to claims 1-7 or obtained by a method according to claim 8; B) 30-99.14 wt % of one or more ethylenically unsaturated monomers; C) 0.05-30 wt % peroxides; optionally D) 0-60 wt% unsaturated oligomers; E) 0.01-2 wt % polymerisation inhibitor; and optionally F) 0-800 pts.wt auxiliary substances and additives; wherein the sum of components A)+B)+C)+D)+E) is 100 wt %, and the amount of F) relates to 100 pts.wt of the sum A)+B)+C)+D)+E). Wherein component A) and component C) are stored together, and before applying the system, at least one component B) is stored separately from A) and C), wherein the capacity of the separately stored component B) to cause swelling of the polymerisate A) is so high that the activator of the polymerisate A) fixed in the polymer can react with component C), or component A), part of component B) and component DC) are stored together, wherein part of component B) is selected such that the capacity of component B) to cause swelling of the polymerisate A) is so low that the activator of the polymerisate A) fixed in the polymer cannot react with component C). Also described is use of said two- or multi-component system as a component part of substances, such as resins from unsaturated polyesters and vinyl esters or adhesive substances, cast resins, polymer coatings for floors and other reactive coatings, sealants, impregnating compounds, binding compounds, compounds for making artificial marble and other artificial stones, compounds for reactive concrete inserts, tooth filling compounds, porous plastic moulds for ceramic articles.
EFFECT: obtaining two- or multi-component systems that are curable at room temperature, the working life of which can be controlled in a wide range and which, nevertheless, are quickly and completely curable before a certain moment in time without requiring energy or an external mechanical pulse.
13 cl, 2 tbl, 19 ex
SUBSTANCE: present invention refers to a method for synthesis of core-shell nanoparticles. What is disclosed is a method for synthesis of core-shell nanoparticles involving the following stages: synthesis of a polymer fuse in a solvent by living anionic dispersion polymerisation; the fuse contains monovinyl monomer cross-linked by a cross-linking agent to form nanoparticle core; the core has an average diameter from 5 nanometres to 10,000 nanometres and contains polymer chains with living terminal groups; a stabilising agent is added to stabilise the fuse and to prevent the fuse deposition from the solution; and shell particles are grafted and/or polymerised on the living core ends to form nanoparticle shells; the fuse is formed by polymerising monovinyl monomer with the use of an initiator and cross linking of the produced polymer with a multivinyl agent cross-linking the monomer. There are also described core-shell nanoparticles containing: a core formed of the polymer fuse, which contains monovinyl monomer core particles cross-linked by a cross-linking agent; the agent has an average diameter from 5 nanometres to 10,000 nanometres; the shell containing the shell particles attached to the core; the shell is mainly non-cross-linked; the fuse is synthesised by living anionic dispersion polymerisation; the fuse is formed by polymerisation of the monovinyl monomer with the use of the initiator and cross linking of the produced polymer with the multivinyl agent cross-linking the monomer. What is also described is a method for producing a rubber composition, adding core-shell nanoparticles produced by the above method, into a vulcanised rubber matrix. What is also described is a method for tyre manufacture, involving producing the core-shell nanoparticles; adding the core-shell nanoparticles into the rubber mixture; moulding the rubber mixture in a tyre tread; and a tyre assembly with the use of the tyre tread.
EFFECT: producing the nanoparticles possessing low viscosity, improved wetting ability and snow cohesion when added to the rubber matrix.
14 cl, 3 dwg, 8 tbl, 24 ex
SUBSTANCE: present invention relates to a grafted pigment dispersing polymeric additive for opacifying pigments. Claimed a grafted pigment dispersing polymeric additive comprising a polymeric pigment dispersant grafted onto a polymeric carrier, wherein the polymeric pigment dispersant has a molecular weight of about 1000 to about 20000 dalton and an acid number from about 150 to about 250, and wherein the polymeric pigment dispersant is soluble in an alkali solution, andwherein the minimum film forming temperature (MFFT) of the polymeric carrier is greater than about 10°C and less than about 130°C, and wherein the grafted pigment dispersing polymeric additive is capable of adsorbing to an opacifying pigment. The grafted pigment dispersing polymeric additive particle size is in the range of 75 nm to about 200 nm in diameter. Claimed a paint composition comprising at least a latex binder, the grafted pigment dispersing polymeric additive and an opacifying pigment.
EFFECT: grafted additive exhibits improved paint hiding and tint strength.
21 cl, 4 dwg, 4 tbl, 32 ex
SUBSTANCE: said utility invention relates to the field of ion exchange with complexing and chelation, and may be used in the hydrometallurgy of non-ferrous, rare, and noble metals, in water treatment and water purification processes, the chemical industry, and for obtaining high purity substances. The method of obtaining selective sorption and ion-exchange materials includes treatment of amine-containing raw materials with formaldehyde and hypophosphorous acid. As the amine-containing raw materials, a product of enzymatic hydrolysis of natural proteins is used, i.e. peptides with a molecular weight of 700-1000 g/mol, and individual amino acids in the form of a 15-25% water solution. The synthesis process is carried out at 60-70°C.
EFFECT: simplification of technology; increased selectivity of synthesised products to required metal ions.
2 cl, 3 ex
SUBSTANCE: invention claims modified ion exchange resin, where at least one compound selected out of the following (A) and (B) compounds is linked by ion link to functional acid group of acid ion exchange resin, so that compound is linked by ion link to 0.1-50 mol % of total functional acid group number present in acid ion exchange resin: compound (A) is represented by formula 1, where P is phosphor atom; S is sulfur atom; H is hydrogen atom; R1 is alkylene group including 1 to 6 carbon atoms, where one fragment can include phenylene group; and each R2, R3 and R4 are independently (1) alkyl group including 1 to 6 carbon atoms, or (3) aryl group including 5 to 10 carbon atoms; and compound (B) is represented by formula 2, where P is phosphor atom; S is sulfur atom; H is hydrogen atom; each of R1 and R2 is alkylene group including 1 to 6 carbon atoms, where one fragment can include phenylene group; and each R3 and R4 are independently an aryl group including 5 to 10 carbon atoms. Also invention claims catalyst for obtaining bisphenols, based on this resin, and method of bisphenol obtaining. Invention claims methods of obtaining modified ion exchange resin (versions).
EFFECT: obtained catalyst with high selectivity to bisphenols, obtaining of bisphenol A with high acetone conversion grade.
9 cl, 10 ex
SUBSTANCE: invention concerns improvement technology for films based on polyvinyl alcohol with enhanced fire and heat resistance, and can be applied in various fields of industry, science, technology and agriculture. Method involves polyvinyl alcohol films processing by mix of 5-10% aqueous solution of methylphosphate borate and 5-10% aqueous solution of chitosan at the weight ratio of 1:1, and drying.
EFFECT: obtainment of non-toxic biologically degradable and environmentally safe films with enhanced fire and heat resistance.
1 tbl, 3 ex
SUBSTANCE: invention concerns technology for obtaining polyvinyl alcohol films, particularly composition for film modification intended for enhanced fire and heat resistance, and can be applied in various fields of industry, science, technology and agriculture. Claimed composition includes 5-10% aqueous solution of methylphosphite borate and 5-10% aqueous solution of chitosan at the following component ratio, weight parts: methylphosphite borate - 5-10; chitosan - 5-10; water - 190-180.
EFFECT: improved fire and heat resistance of polyvinyl alcohol films.
2 tbl, 3 ex