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: A novel polyurethane based prepolymer useful in biomedical devices which provides high oxygen permeability and superior physical properties.

Abstract: Materials which are cross-linkable by ultraviolet radiation under atmospheric oxygen and are based on (meth)acrylate copolymers having a K value of from 10 to 100 are obtained by free radical polymerization, in the presence or absence of a solvent, ofa) from 5% to 97.4% by weight of isoamyl acrylate and/or isoamyl methacrylate,b) from 9% to 89.9% by weight of (methacrylates whose homopolymers have a glass transition temperature below -30.degree. C.,c) from 2.5% to 30% by weight of .alpha.,.beta.-monoolefinically unsaturated compounds whose homopolymers have a glass transition temperature above -30.degree. C.,d) from 0% to 10% by weight of monoolefinically unsaturated acids and/or their anhydrides ande) from 0% to 20% by weight of further olefinically unsaturated monomers having one or more of the following functional groups: hydroxyl, amide, epoxide, ether, ester, urethane, urea, primary, secondary and tertiary amine and ether groups, andf) from 0.

Abstract: The present invention provides a wall for a package, which wall comprises, or includes a layer comprising, a composition comprising a polymer and capable of scavenging oxygen through the metal-catalysed oxidation of an oxidisable organic component thereof. The oxidisable organic component is preferably itself a polymer, and may be the only polymer in the composition. Preferred compositions include a blend of 96% polyethylene terephthalate and 4% poly (m-xylyleneadipamide) containing 200 ppm cobalt as catalyst, with good permeance-versus-time performance (3) when formed into a bottle.

Abstract: An ultra-fine particulated polymer latex having an average particle size of 100 nm or less, a crosslinked structure and a glass transition temperature lower than a value calculated by a weight fraction method.

Abstract: Photochemical conversion of tachysterols to previtamins is conducted in the presence of a polymeric photosensitizer which has the appropriate chromophore groups, e.g. anthracene groups, attached to a medium or high molecular weight, substantially uncrosslinked polymer backbone. The polymeric photosensitizer is soluble in solvents normally used for conducting the photochemical reaction (diethyl ether, dioxane, THF, t.butyl methyl ether) but insoluble in lower alcohols and hydrocarbons, so that it may be readily and simply recovered from the product mixture by use of such non-solvents.

Abstract: The invention relates to optically active homo- and copolymers made from optically active (meth)acrylamides, the polymers being immobilized on silica gel, a process for their preparation, and their use as adsorbents, in particular as the stationary phase for chromatographic racemate resolution.

Abstract: Process for the imidization of vinyl-aromatic copolymers containing maleic anhydride, using as an imidizing agent an amide, the imidization being conducted in an anhydrous state and in the presence of a catalyst.

Abstract: The invention concerns a method of preparing homopolymers or copolymers that are water-soluble or swell up in water and have a low residual monomer content by treating them with at least one compound that can react with the monomer's double bond.

Abstract: Disclosed is a method for preparing an aqueous composition of low viscosity and low volatile organic solvent content which comprises: (A) addition polymerizing in solution a first monomer composition containing from 1 percent to 15 percent by weight of an epoxy-functional vinyl monomer and from 99 percent to 85 percent by weight of at least one other copolymerizable vinyl monomer in the presence of a polyester polymer having an acid value on solids of from 10 to 85 and a weight average molecular weight of from 500 to 2,000 until the epoxy functionally of the epoxy-functional vinyl monomer has been essentially completely reacted, to form a first product (1), and thereafter, (B) addition polymerizing in the aforesaid first product (1), a second monomer composition containing from 3 to 50 percent by weight, based on the total weight of vinyl monomers from parts (A) and (B), of an ethylenically unsaturated carboxylic acid and at least one other copolymerizable vinyl monomer different from the epoxy-functional vin

Abstract: Polymers having a monomeric unit of the formula ##STR1## wherein R.sup.1 represents hydrogen, methyl, ethyl, fluorine, chlorine, bromine, cyano or phenyl; X.sup.1 denotes oxygen, sulfur, --NH-- or --N(CH.sub.3)--; R.sup.2 is alkylene with 3-15 carbon atoms in which optionally a non-terminal methylene group is replaced by oxygen or sulfur; X.sup.2 denotes a single covalent bond, oxygen or sulfur; rings A and B each independently represent 1,4-phenylene which is unsubstituted or substituted with halogen, methyl, methoxy and/or cyano and in which optionally one CH group or two CH groups is/are replaced by nitrogen; ring C represents 1,4-phenylene which is unsubstituted or substituted with halogen, methyl, methoxy and/or cyano and in which optionally one CH group or two CH groups is/are replaced by nitrogen or represents trans-1,4-cyclohexylene; n stands for the number 0 and Z.sup.1 stands for --CONH-- or --NHCO--; or n stands for the number 1, one of the groups Z.sup.1 and Z.sup.

Abstract: Magnetic recording media have been made with a new class of binder resins having the formula ##STR1## wherein the portion of the copolymer having the a subscript comprises 50 to 97 weight percent of the copolymer, the portion of the copolymer having the b subscript comprises 0 to 30 weight percent of the copolymer, the portions of the copolymer having the =c and d subscripts combined comprise 0.1 to 20 weight percent of the copolymer, while d can be 0,R.sub.1 is an alkyl group selected from --CH.sub.3 and ##STR2## wherein n1=1-10, R.sub.2 is an alkylene group which may be --CH.sub.2).sub.nl or ##STR3## n2=1-4 and n3=0-4, R.sub.3 may be selected from --H and --CH.sub.3, n5=0 or 1, and X is a linking group which is stable under electron beam irradiation and may be, for example, ##STR4## R.sub.4 =C1-6 alkylene, for example, with the proviso that when d=0, there is at least one additional polymer in the binder.

Abstract: A substantially water-insoluble, slightly cross-linked, partially neutralized, hydrogen-forming polymer composition consisting essentially of(a) from about 50 mole percent to 99.999 mole percent of polymerizable acid group-containing monomers, and(b) from about 0.001 mole percent to 10 mole percent of a water-soluble polyamine;said hydrogel-forming polymer composition having been formed by reacting a water-soluble acid group-containing vinyl polymer with a water-soluble polyamine at a temperature sufficient to convert the substantial portion of the amino groups of the water-soluble polyamine into amido groups.

Abstract: A highly water-absorptive ocular lens 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 copolymerizing (a) an alkyl (meth)acrylate monomer and (b) a monomer having at least two polymerizable groups per molecule, as the main components;(B) from 70 to 98% by weight of a fatty acid vinyl ester; and(C) from 0.02 to 3.0 parts by weight of a cross linking agent,provided that the total amount of polymer (A) and monomer (B) is 100 parts by weight.

Abstract: Disclosed is an aqueous composition of low viscosity and low volatile organic solvent content of a water-borne resin. The water-borne resin comprises: (I) from 10 to 50 percent by weight of a polyester polymer, and (II) from 90 to 50 percent by weight of a solution polymerized acrylic copolymer. The solution polymerized acrylic copolymer is derived from a mixture of monomers comprising an ethylenically unsaturated carboxylic acid monomer. The water-borne resin is at least partially neutralized by a base and, prior to neutralization, has an acid value based on resin solids of from 10 to 200.

Abstract: Thermosetting powder paints are produced from functional fluorocarbon resins adapted to be coreactive with a blocked diisocyanate upon heating. Preferred compositions can further contain hydroxyl functional acrylic polymers or polyester polymers which can coreact with the unblocked diisocyanate upon heat curing of the powder paint film.

Abstract: Compositions useful as a binder in lacquers and coating compositions and which are curable by moisture contain:(A) from 30 to 99 parts by weight of at least one copolymer of olefinically unsaturated compounds having a weight average molecular weight of from 1500 to 75,000 and containing chemically incorporated moieties capable of undergoing an addition reaction with amino groups, and(B) from 1 to 70 parts by weight of at least one organic polyamine containing blocked amino groups,wherein (i) the copolymers of component (A) contain both intramolecular carboxylic acid anhydride moieties and epoxide moieties in a chemically bound form, with the anhydride equivalent weight of the copolymers being from 393 to 9,800 and the epoxide equivalent weight of the copolymers from 568 to 14,200, and (ii) the binder composition contains from 0.2 to 8 anhydride and epoxide moieties for each blocked amino group.

Abstract: This invention presents a series of synthetic based cold seal adhesives which are capable of forming a strong bond at room temperature, yet which may be reeled up without blocking and stored for extended periods of time. Such adhesives can be used in place of the natural rubber based cold seal adhesives currently used, and thus, can be employed in any packaging application where cold seal properties are desirable.

Abstract: In polymer ammonium salts which are formed from a copolymer (A) which can be modified by a polymer-analogous reaction and from one or more amines (B), the copolymer (A) is obtainable by copolymerization of a monomer mixture of(a.sub.1) ethylene,(a.sub.2) acrylic acid and/or methacrylic acid, and(a.sub.3) one or more further monomers from the group consisting of the vinyl esters, vinyl ethers, acrylates, methacrylates, acrylamides and methacrylamides, and the amines (B) are selected from the group consisting of the(b.sub.1) cyclic amines of the general formula I ##STR1## and/or from the group consisting of the (b.sub.2) open-chain amines of the general formula II ##STR2## and/or from the group consisting of (b.sub.3) 1,4-thiazine, N,N',N"-trisvinylmelamine and N,N',N"-triallylmelamine, Z, R.sup.1, R.sup.2 and R.sup.3 having the meanings stated in the description.

Abstract: A method for altering a macroporous cross-linked hydrophobic copolymeric lattice produced by precipitation polymerization in a solvent of at least one monounsaturated ester monomer and at least one polyunsaturated ester monomer soluble therein, in order to render the hydrophobic copolymeric lattice hydrophilic. The method involves saponifying the hydrophobic copolymeric lattice by reacting the surface of the hydrophobic copolymeric lattice with an aqueous alkali. The surface can also be rendered hydrophilic by polymerizing an acrylate monomer onto the lattice in order to form a surface containing carboxylic acid sites. The carboxylic acid sites formed on the surface of the lattice are converted to carboxylate anions.