Abstract: Hydrophilic gelled crosslinked polymers comprising as an essential constituent monomer component a (meth)acrylate ester monomer having a fluorine-substituted hydrocarbon group containing at least three fluorine atoms grafted thereto. The fluorine-containing polymers have excellent oxygen permeability, water swellability, wearing comfort and contamination resistance.

Abstract: A water and oil repellant comprising, as effective component, polymer particles each containing at least two polymers, wherein at least one of said at least two polymers is a polymer containing a polyfluoroalkyl group.

Abstract: CF.sub.2 .dbd.CF.sub.2 and CF.sub.3 OCF.dbd.CF.sub.2 are subjected to copolymerization reaction in the presence of an organic compound containing at least one of iodine and bromine, and then CF.sub.2 .dbd.CF.sub.2 and CH.sub.2 .dbd.CF.sub.2 are supplied to the reaction system to continue the polymerization reaction.The thus obtained fluorine-containing block copolymer is of a low vinylidene fluoride content type and has a good solvent resistance.

Abstract: A compound having at least one perfluorovinyl group and at least one functional group is suitable for reacting with and/or forming polymers. The compound is preferably of Formula I:(G)n--R--(X--CF.dbd.CF.sub.2).sub.mwherein R represents an optionally substituted hydrocarbyl group, X represents any group which links R and a perfluorovinyl group; n is the number of G groups, m is the number of (XCF.dbd.CF.sub.2) groups; and G represents any reactive functional group of a group convertible into a reactive functional groups.A process for preparing a compound of Formula I comprises the steps of:(a) preparing a 2-halotetrafluoro compound of the formula III:(Q--CF.sub.2 --CF.sub.2 X).sub.m --R--(G").sub.

Abstract: An aqueous dispersion comprising composite colloidal particles having an average particle size of 0.05 to 1.0 micrometer each of which comprises a core made of a copolymer comprising 99-100% by weight of tetrafluoroethylene and 0 to 1 % by weight of a fluorine-containing olefin which is copolymerizable with tetrafluoroethylene and a shell made of a polymer having a glass transition temperature of at least 50.degree. C. which comprises(a) 60 to 100% by mole of at least one .alpha.-substituted acrylate of the formula:CH.sub.2 .dbd.CXCOOR.sub.f (I)wherein X is a methyl group, a fluorine atom or a trifluoromethyl group, and R.sub.

Abstract: A toner for electrophotography is disclosed, which comprises as the main components a coloring component and a binder resin which is a block copolymer comprising a functional segment (A) consisting of at least one of a fluoralkyl acryl ester block unit or a fluoralkyl methacryl ester block unit, and a compatible segment (B) consisting of a fluorine-free vinyl or olefin monomer block unit.

Abstract: An additive composition containing pendant perfluoroaliphatic urethanes within a copolymer prepared from ethylene and propylene or an ethylene-propylene terpolymer containing non-conjugated diene or triene comprising from about 15 to 80 mole percent of ethylene, 85 to 15 mole percent propylene and from about 20 to 85 mole percent of the (C.sub.3 -C.sub.10) alphamonoolefin and having a number average molecular weight ranging from about 5,000 to 500,000 which has been reacted with at least one isocyanoacrylate agent to form one or more acrylating reaction intermediates characterized by having a pendant isocyano function within their structure and reacting said reaction intermediate with a perfluoroaliphatic alcohol and a lubricating oil composition containing same are provided.

Abstract: A free-radical initiated process for preparing fluorinated polymers wherein at least one gaseous fluoroolefin is polymerized in a stirred polymerizer, the improvement comprising preparing a non-volatile polymeric seed in a reaction zone separate from the polymerizer by decomposing initiator in the presence of fluoromonomer to form oligomeric free radicals and condensing said radicals onto previously prepared polymer; and conveying said non-volatile seed to the polymerizer.

Abstract: Vinyl unsaturated copolymers are described which are obtained in a two-step process and which consist of monomeric units A, B, C, D and E, copolymerized in a first step, and in a second step reacted with a reactive vinyl monomer M.sub.v, and in which A is a siloxane or fluorine containing vinyl monomer, 30-70% by weight; B is N,N-dimethylacrylamide or N-vinylpyrrolidone, 30-70% by weight; C is an active hydrogen containing vinyl monomer, 0.5-25% by weight; D are other copolymerizable comonomers, 0-30% by weight, and E is a chain transfer agent, 0-10 mol percent. M.sub.v is a vinyl unsaturated isocyanate.These vinyl unsaturated polymers are useful, either by themselves or in combination with other copolymerizable vinyl monomers, as heat or UV-curable coatings or glass, plastic, wood, paper, textiles, metal or ceramics, said coatings possessing low surface energies and low refractive indices.

Abstract: A surface for the attachment and growth of cells is prepared by first grafting polyacrylic acid chains to a fluorocarbon polymer substrate so that its weight increases by between 0.1 % and 20%. The surface is then treated with concentrated sulphuric acid under such conditions that will separately decarboxylate, aromatize and sulphonate an effective proportion of the grafted polyacrylic acid chains before being dried, soaked in a concentrated acid and brought to a substantially neutral pH for cell attachment and growth thereupon. The surface may also be used as a human tissue implant.

Abstract: Production of an aqueous-based composition comprising a fluoropolymer and a vinyl copolymer by (1) preparing a non-aqueous solution of a fluoropolymer comprising repeat units derived from at least one fluorolefine and repeat units bearing chain-pendant disperser groups imparting water-emulsifiability or water-solubility to the fluoropolymer; (2) converting the non-aqueous solution formed in step (1) into an aqueous-based emulsion or solution of said fluoropolymer; and (3) polymerising at least one vinyl monomer to form a vinyl polymer in the presence of said aqueous-based emulsion or solution from step (2).

Abstract: Dispersions of polymer systems comprising two normally incompatible polymer networks, one of which is held together by physical interactions and the other by chemical cross-links, the networks being catenated, are useful for making coating compositions, films and molded articles.

Abstract: High strength, flexible compositions with improved mechanical properties at elevated temperatures for wire insulation coatings and other shaped articles used in hostile environments are disclosed, consisting of a high temperature fluorocarbon polymer, such as an ethylene-tetrafluoroethylene copolymer or the like, and from abot 1% wt. to about 50% wt. of a polyvinylidene fluoride compound.

Abstract: A graft copolymer having dispersion stabilizing effect, which comprises on the carbon backbone thereof a polymer side chain comprising a carbon chain having a molecular weight of 1,000.about.100,000, a fluorine atom containing fluorine side chain and a hydrophilic side chain containing a hydrophilic group, the total mean molecular weight of said graft copolymer being 5,000 or more. The graft copolymer of this invention can be used as an excellent dispersion stabilizer for emulsion polymerization, whereby in emulsion polymerization it is possible to attain polymer particle dispersion stability to ensure that the polymer particles will not be agglomerated even if they have been grown to larger particles having a diameter of 0.5.mu. or more and that dispersion of the polymer particles having a large and uniform particle diameter is obtained.

Abstract: Radiation curable coating compositions for providing solvent-resistant abhesive coatings comprise polyfluorinated acrylates and methacrylates, polyethylenically unsaturated crosslinking agents and a film-forming organic polymer. The compositions can be used after radiation curing to render substrates oil, soil, and water repellent. The cured compositions have particular use as release coatings in image transfer systems wherein a fused xerographic image is transferred from the release coated surface, to another surface due to the particular characteristics of the coatings. Novel poly(fluorooxyalkylene)urethane acrylate compounds are also disclosed.

Abstract: Hydrophilic gelled crosslinked polymers comprising as an essential constituent monomer component a (meth)acrylate ester monomer having a fluorine-substituted hydrocarbon group containing at least three fluorine atoms grafted thereto. The fluorine-containing polymers have excellent oxygen permeability, water swellability, wearing comfort and contamination resistance.

Abstract: A hydrophobic polymeric microporous membrane having a CWST of less than about 28 dynes/cm is obtained by forming a (co)polymer of a fluorine-containing ethylenically unsaturated monomer that is permanently chemically bonded to a microporous membrane substrate.

Abstract: Dispersion-process-produced, non-melt-processible, particulate, core-shell, tetrafluoroethylene copolymer comprising recurring units of tetrafluoroethylene and modifying recurring units of at least one ethylenically unsaturated comonomer that is copolymerizable with the tetrafluoroethylene, the number of recurring units of comonomer in the shell being sufficient to enable the copolymer to compound uniformly with an elastomer or plastic without forming visible agglomerates, and blends thereof with elastomeric and plastic resins.

Abstract: Heterogeneous copolymers of vinylidene fluoride and chlorotrifluoroethylene are obtained by copolymerization in suspension or emulsion in two stages. In a first stage the vinylidene fluoride and the chlorotrifluoroethylene are copolymerized, and in a second stage the polymerization of vinvylidene fluoride is continued after discontinuance of the introduction of chlorotrifluoroethylene.

Abstract: A process for the polymerization of acrylic monomers and optionally of vinyl comonomers using (i) an initiator of formula (I):R--M (I)in which M denotes a metal selected from the group consisting of alkali metals and alkaline earth metals and R denotes a straight-chain or branched alkyl radical containing 2 to 6 carbon atoms or an aryl radical, and (ii) at least one non-nitrogenous macrocyclic complexing agent.The polymerization process is used to make products of acrylic polymers having a narrow distribution of molecular masses.

Abstract: A graft copolymer having dispersion stabilizing effect, which is a product of the polymerization of 5 to 30% by weight of a macromonomer which has a molecular weight of 1,000 to 100,000 and has a radical polymerizable unsaturated group at its one end, 1 to 40% by weight of a hydrophillic monomer which has a hydrophillic moiety in it and has a radical polymerizable unsaturated group, and 5 to 40% by weight of a fluorinated monomer which has a florinated moiety in it and has a radical polymerizable unsaturated group, the % by weight being based on a total of the three monomers, and 0 to 50% of the total of the total of the three monomers of a monomer copolymerizable therewith.

Abstract: The disclosure relates to a graft polymerization method to form a fluorine-containing graft copolymer which is useful as a soft and flexible fluororesin intermediate between fluororubbers and crystalline fluororesins. The graft copolymer is formed by polymerizing a fluorine-containing crystalline polymer, e.g. copolymer of CTFE and ethylene, in water in the presence of a reducing agent and a fluorine-containing elastomeric copolymer which comprises peroxy groups and is dispersed in the water to become the "trunk" of the graft copolymer. For example, the elastomeric copolymer is of vinylidene fluoride, CTFE and t-butyl peroxyallylcarbonate. An example of the reducing agent is sodium bisulfite, and optionally and additionally a source of a reducing metal ion such as ferric chloride may be used. This graft polymerization reaction can be carried out at a relatively low temperature, viz. at 20.degree.-50.degree. C.

Abstract: The dental agent is based on a liquid monomer, mixture of monomers or preymer containing acrylic, methacrylic or vinyl groups with addition of acrylic or methacrylic acid as the base mixture, and further contains(A) a halogen-sulfonated polyolefin and/or(B) a halogenated acrylate or methacrylate.The boding agent is especially well suited to prepare permanent composite dental bonding of metal and plastic and of ceramics and plastics.

Abstract: A modified fine powder polytetrafluoroethylene, and the process for preparing the polymer, in which the modifying copolymerizable monomer is a selected dioxole monomer. The composition is dispersion-process-produced and includes a core portion having a copolymer comprising repeat units provided by tetrafluoroethylene monomer and dioxole monomer, and a shell portion that is substantially free of dioxole units. The core and shell portions may contain perfluoro (n-propylvinyl) ether. The composition is useful for paste extrusion, such as in wire coating and tubing applications.

Abstract: The present invention relates to pressure-sensitive adhesive compositions comprising tackified elastomeric copolymers or block copolymers, e.g., based upon styrene/isoprene, having a novel condensed phase structure wherein polymer branches occur along the polymer backbone, either at a predetermined location or at random locations. The invention also provides sheet materials coated with the adhesive compositions. The polymers of the present invention are made by a method which comprises the step of reacting, under polymerization conditions, hydrocarbyl lithium initiator, at least one anionically polymerizable compound, and an organometallic-substituted styrene condensing agent. The reactants may be added simultaneously to produce a copolymer with polymer branch segments randomly located along the polymer backbone or sequentially to produce a copolymer with branches located at the same predetermined location along the polymer backbone.

Abstract: A heat and oil resistant insulating composition for use as an insulating layer of an electric insulating wire, a material for an extrusion mold and an insulating layer of a cord-shaped heater, comprising an ethylene tetrafluoride-propylene copolymer, a methacrylic ester or acrylie ester as a cross-linking auxiliary and an organic peroxide as a cross-linking agent.The composition is cross-linked under the atmospheric pressure.

Abstract: The grafting reaction according to the invention occurs after having impregnated the polymeric material, on which were previously created free radicals by activation within an emulsion containing the fluorinated monomer and a graftable derivative of the morpholine. The preferred reagents are morpholinoethyl methacrylate and 3,3,4,4,5,5,6,6,7,7,8,8,8-tridecafluorooctyl methacrylate. The invention is applicable to the waterproofing of textile articles, particularly made of cotton, silk, linen. The material thus grafted is waterproof when cold, but when hot, it may be washed, dyed or printed by transfer.

Abstract: A thermosetting resin composition comprising a special poly(p-hydroxystyrene) derivative resin and a radical polymerization initiator, and if necessary an epoxy modified polybutadiene, can provide prepregs and laminates having a low dielectric constant, a shorter signalling delay time, good heat resistance and flame retardancy and thus being suitable for producing multilayer printed circuit boards.

Abstract: New modified non-melt-fabricable polytetrafluoroethylene resins have now been found which can be compounded with elastomers or plastics without the deleterious agglomeration or fibrillation that occurs with known modified non-melt-fabricable polytetrafluoroethylene resins. The resins are made of recurring units of tetrafluoroethylene, and recurring units of at least one comonomer selected from hexafluoropropylene or perfluoro (alkyl vinyl ether) wherein the alkyl group is of 1-4 carbon atoms, said comonomer present in amounts sufficient to produce the effect recited in the first sentence.

Abstract: Composition, optionally curable, comprising a fluorocopolymer admixed with an acrylic polymer, where the fluoropolymer comprises units of a fluorolefine (e.g. TFE) and fluoroallylether (e.g. tetrafluororallylether).

Abstract: An iodine-containing compound consisting of at least two repeating units selected from the formulae:--(CH.sub.2 CF.sub.2 CF.sub.2 O).sub.a ----(CHClCF.sub.2 CF.sub.2 O).sub.b ----(CCl.sub.2 CF.sub.2 CF.sub.2 O).sub.c ----(CHFCF.sub.2 CF.sub.2 O).sub.d ----(CFClCF.sub.2 CF.sub.2 O).sub.e ----(CF.sub.2 CF.sub.2 CF.sub.2 O).sub.f --wherein a, b, c, d, e and f are each 0 or a positive integer and satisfy the following equations:2.ltoreq.a+b+c+d+e+f.ltoreq.200 and1.ltoreq.a+c+d+fand an iodine atom at at least one end of a molecule, which can provide a block copolymer which is useful as a grease.

Abstract: The invention is a process for producing a modified polytetrafluoroethylene which comprises polymerizing tetrafluoroethylene in an aqueous medium containing a dispersing agent with a polymerization initiator source and then, copolymerizing tetrafluoroethylene one or more fluorinated modifiers having an acid functional group or a functional group which is convertible to the acid group as a copolymerizable modifier in the presence of the resulting polytetrafluoroethylene to a polymerization point past the Kraft point to produce highly porous, fibrous, stratified fluoropolymers having cores made of homopolymer of poly-tetrafluoroethylene coated with sheath layers which are made of a copolymer of polytetrafluoroethylene and one or more modifiers.

Abstract: Heterogeneous copolymers of vinylidene fluoride and chlorotrifluoroethylene are obtained by copolymerization in suspension or emulsion in two stages. In a first stage the vinylidene fluoride and the chlorotrifluroethylene are copolymerized, and in a second stage the polymerization of vinylidene fluoride is continued after discontinuance of the introduction of chlorotrifluoroethylene.

Abstract: High strength, flexible compositions with improved mechanical properties at elevated temperatures for wire insulation coatings and other shaped articles used in hostile environments are disclosed, consisting of a high temperature fluorocarbon polymer, such as an ethylene-tetrafluoroethylene copolymer or the like, and from about 1% wt. to about 50% wt. of a polyvinylidene fluoride compound.

Abstract: Macromonomer prepared by contacting and reacting a polymer (oligomer) having at least three monomer repeat units and at least one silyl ether group, in the presence of an anion catalyst, with a terminally unsaturated acyl fluoride or sulfonyl fluoride.

Abstract: Modified PTFE fine powder which comprises primary particles having an average particle size of 0.1 to 0.6 .mu.m and contains 0.01 to 0.15% by weight, based on the total weight of the particles, of at least one olefinically unsaturated compound selected from the group consisting of a fluoroalkyl vinyl ether of the formula:X(CF.sub.2).sub.n OCF.dbd.CF.sub.2 (I)wherein X is a hydrogen atom, a fluorine atom or a chlorine atom and n is an integer of 1 to 6, and a fluoroalkyl vinyl ether of the formula:C.sub.3 F.sub.7 (OCF.sub.2 CF.sub.2 CF.sub.2).sub.m [OCF(CF.sub.3)CF.sub.2 ].sub.l OCF.dbd.CF.sub.2 (II)wherein m is an integer of 0 to 2 and l is an integer of 0 to 2 mainly in core parts of the particles and 0.04 to 0.25% by weight, based on the total weight of the particles, of chlorotrifluoroethylene in shell parts, which has good paste extrudability and heat stability.

Abstract: Advantageous modification of non-melt processible, fibrillatible TFE copolymers for past extrusion is possible by including small amounts of perfluoro(n-alkyl vinyl ether) in the shell of the copolymer particle.

Abstract: Disclosed is a curable composition consisting essentially of (i) a polymerizable double bond-containing resin prepared by introducing a polymerizable double bond-containing group into a polymer containing as a monomer a fluoroalkyl acrylate or methacrylate represented by the formulaCH.sub.2 .dbd.C(R)--COO(CX.sub.2).sub.m (CF.sub.2).sub.n X (I)wherein R is methyl or hydrogen, X is fluorine or hydrogen, m is 1 or 2 and n is an integer of 1 to 12, and (ii) a fluoroalkyl acrylate or methacrylate of the formula (I).

Abstract: The graded-index optical transmission medium with a low transmission loss, a favorable index distribution and superior in softness etc. can be constituted by a mixture of polymers Pn having different refractive indices and by restricting the attenuation L.sub.F of the medium in accordance with the below inequality (I).The medium may advantageously be produced by way of admixing a thermoplastic polymer (A) and a monomer (B) able to form a polymer mutually soluble with the polymer (A), molding the mixture and volatilizing the monomer (B) from the surface of thus shaped substance. ##EQU1## wherein Wn are the respective proportions by weight of mixing of the polymers Pn to the whole of the mixture of the polymers Pn, and ##EQU2## Wn is equal to one.

Abstract: Graft polymers are prepared by reacting an ethylenically unsaturated polymerizable monomer with a polymer of an olefin of 2 to about 8 carbon atoms in a process wherein the olefin polymer is substantially insoluble in the monomer but is capable of absorbing the monomer. In a preferred aspect, a vinyl halide polyolefin graft polymer is produced by reacting a solid polyolefin particle with a vinyl halide monomer in which the polyolefin is substantially insoluble, but is capable of absorbing the monomer. The solid particles can be contacted with the monomer in one step or in stages. When the stage-wise reaction is continued until the proportion of polyolefin in the polymer product is about 2 to about 20 weight percent, the resulting product can be formed to a transparent or translucent article.

Abstract: A copolymer comprising 50 to 90% by weight of the constituting unit derived from (a) a polymerizable compound having a perfluoroalkyl group of 4 to 20 carbon atoms, 10 to 50% by weight of the constituting unit derived from (b) cyclohexyl or benzyl ester of acrylic acid or methacrylic acid and 0.1 to 10% by weight of the constituting unit derived from (c) at least one selected from the group consisting of polyethylene glycol diacrylate of the formulaCH.sub.2 .dbd.CRCOO(CH.sub.2 CH.sub.2 O)rCOCR.dbd.CH.sub.2wherein R is hydrogen atom or methyl, r is an integer of 1 to 50, and N-methylolacrylamide. The copolymer is useful as an oil and water repellent composition.

Abstract: An active energy ray-curable resin composition which gives a cured product having a refractive index of not more than 1.44 comprises (I) a fluorine-containing polymer composed of (A) and at least one of (B) and (C): (A) a fluorine-containing (meth)acrylate, (B) an alpha,beta-ethylenically unsaturated dicarboxylic acid ester and (C) a mono(meth)acrylate and having a fluorine atom content of at least 30% by weight, (II) a fluorine-containing (meth)acrylate, (III) a mono(meth)acrylate and (IV) a polyfunctional monomer containing at least two (meth)acryloyl groups in the molecule. Optical fibers are produced by coating the above composition on a core material and irradiating active energy rays onto the coating to form a cured cladding of the composition.

Abstract: An aqueous dispersion comprising an aqueous medium and colloidal particles of a fluorine-containing copolymer having an average particle size of about 0.05 to 1.0 um dispersed therein, each colloidal particle being constructed with a core portion made of a polymer comprising about 99 to 100% by weight of units of tetrafluoroethylene and about 0 to 1% by weight of units of at least one other fluoroolefin and a shell portion made of a polymer comprising about 50 to 97% by weight of units of tetrafluoroethylene and about 3 to 50% by weight of units of chlorotrifluoroethylene, the amount of chlorotrifluoroethylene in the core and shell portions being from about 2.5 to 25% by weight based on the entire amount of the core and shell portions.

Abstract: The invention relates to fluoroacrylic monomers of formula: ##STR1## in which R.sub.f denotes a perfluoroalkyl radical, R is hydrogen or a methyl radical, R' denotes an alkyl or cycloalkyl radical, or --NR'-- denotes a 1, 4-piperazinylene radical, W and Z denote divalent connecting groups, Q is oxygen or sulphur or an --NR"-- group, R" denoting hydrogen an alkyl radical, and A is a C.sub.2 or C.sub.3 alkylene group. The polymers (homo- or copolymers) derived from these monomers may be used for the water-repellency and oil-repellency treatment of various substrates, particularly leather.

Abstract: A polyvinylidene difluoride structure with a critical surface energy of at least about 80 dynes/cm and a method of making such a structure comprising the steps of contacting a polyvinylidene difluoride structure with an alkalized solution, such as potassium hydroxide, to form activated sites on the surface of the structure; rinsing the activated structure to remove residual alkali; contacting the rinsed, activated structure with a solution of a polymerization initiator, such as potassium peroxydisulfate, and a polymerizable vinylic monomer, such as acrylic acid; and polymerizing and grafting the monomer to the activated structure to form a polyvinylidene difluoride structure with a critical surface energy of at least about 80 dynes/cm.

Abstract: A scorch-resistant, curable, fluorinated elastomer gum composition is provided. A free-radically curable, fluorinated elastomer gum is compounded with an aliphatically unsaturated, diorganosulfur compound in which at least one of the organo moieties contains a .beta.,.gamma.-aliphatically unsaturated moiety having at least one hydrogen atom bonded to the .alpha. carbon atom of said moiety, said carbon atom being bonded to a sulfur atom of the compound. The diorganosulfur compound reduces the tendency of the compounded fluorinated elastomer gum to scorch, i.e. begin curing prematurely, in the presence of a free-radical curing agent during compounding and shaping of the gum at elevated temperatures below the intended cure temperature. Specific examples of said compounds include 2,5-dihydrothiophene-1,1-dioxide, 2,5-dihydrothiophene-1-oxide, and diallylsulfide.

Abstract: A highly water-absorptive optical material obtained by saponification for hydrophilic treatment of a copolymer composed essentially of:(A) from 2 to 30 parts by weight of a (meth)acrylate polymer having at least one polymerizable group per molecule on an average obtained by copolmerizing (a) at alkyl (meth)acrylate monomer and (b) a monomer having at least two polymerizable groups per molecule, as the main components, and(B) from 70 to 98% by weight of a fatty acid vinyl ester.

Abstract: A curable resin composition which comprises a synthetic resin and a polymerizable compound as the essential constituents, characterized in that said synthetic resin is a fluorine-containing polymer which has 10% by weight or more of fluorine atoms and is soluble in said polymerizable compound or a mixture of said polymerizable compound and a volatile solvent to be added to said compound depending on necessity, and that said polymerizable compound contains therein unsaturated bonds or epoxy group.

Abstract: This invention provides a process for preparing a stable dispersion of vinyl polymer, the process comprising polymerizing at least one monomer polymerizable in radical polymerization in an organic liquid in which the monomer is soluble and in which the polymer produced from the monomer is insoluble and in the presence of a dispersion stabilizer comprising at least one polymer selected from the group consisting of:(A) at least one polymer selected from the polymers of acrylic or methacrylic monomer containing perfluoroalkyl group and represented by the formula ##STR1## wherein R is hydrogen or methyl, n is an integer of 1 to 11, and R.sub.

Abstract: This invention relates to a method of producing a flame-retardant acrylic polymer by polymerizing, in the presence of a radical polymerization initiator, a vinyl monomer containing acrylonitrile in an amount of more than 75 weight %, in an aqueous medium in which is present a halogen-containing polymer latex substantially free from an emulsifier. The acrylic polymer can provide flame-retardant shaped products, especially fibers, which have no problems in the operation of spinning, transparency, gloss, dyed color clearness, etc.