Abstract: A complex comprises organoborane and polyoxyalkylenepolyamine. The complexes are useful in systems for initiating the polymerization of acrylic monomer, which systems further include an amine reactive compound. Polymerizable acrylic monomer compositions useful as adhesives can be prepared.

Abstract: A water-soluble cationic copolymer having the general formula: ##STR1## wherein Z represents --C(.dbd.O)O(CH.sub.2).sub.n N.sup..sym. R.sup.4 R.sup.5 R.sup.6 X.sup..crclbar., --C(.dbd.O)NH(CH.sub.2).sub.n N.sup..sym. R.sup.4 R.sup.5 R.sup.6 X.sup..crclbar., ##STR2## or residual groups of --CH.sub.2 N.sup..sym. (R.sup.4 R.sup.5)CH.sub.2 CH.dbd.CH.sub.2 X.sup..crclbar. or mixtures thereof, and n is 1 to 5; R.sup.1, R.sup.2 and R.sup.3 are independently selected from the group consisting of H or C.sub.1 to C.sub.3 alkyl; R.sup.4, R.sup.5 and R.sup.6 are independently C.sub.1 to C.sub.3 alkyl; and X is a halide, hydroxyl or alkylsulfate anion; and wherein x, y, and q represent molar percents of monomeric units in the copolymer such that q is 1 to 99 mol %, and the molar ratio of x to y is from 0 to 10.The copolymers of this invention are useful as flocculating agents and as drainage/retention aids in pulp and papermaking operations.

Abstract: A magnetic recording medium, comprising a magnetic layer provided on a nonmagnetizable substrate, wherein the magnetic layer comprises a magnetic pigment dispersed in a polymeric binder, the polymeric binder comprising a resin, wherein the resin comprises a nonchlorinated fluorine-containing vinyl copolymer having pendant nitrile groups, pendant hydroxyl groups, and pendant fluorine-containing groups.

Abstract: The heterogeneous polymerization of water-insoluble polymer in CO.sub.2 is disclosed. The method comprises providing a heterogeneous reaction mixture comprising CO.sub.2, a monomer, and a surfactant, then polymerizing the monomer to form a water-insoluble polymer.

Abstract: Copolymers of tetrafluoroethylene, hexafluoropropylene, and perfluoro(ethyl vinyl ether) can be extruded at much higher rates than corresponding copolymers containing perfluoro(propyl vinyl ether).

Abstract: The present invention is directed to a porous terpolymer microparticle having a high oil absorbency.

Abstract: New fluoroelastomers are described, having iodine atoms in terminal position and monomeric units in the chain deriving from an iodinated olefin of formula:CHR.dbd.CH--Z--CH.sub.2 CHR--I (I)wherein: R is --H or --CH.sub.3 ; Z is a (per)fluoroalkylene radical C.sub.1 -C.sub.18, linear or branched, optionally containing one or more ether oxygen atoms, or a (per) fluoropolyoxyalkylene radical.These products, upon peroxide curing, require extremely short post-curing treatments (around 30-60 minutes at 180.degree.-230.degree. C.) and are characterized by compression set values lower than 25% (measured on O-rings at 200.degree. C. for 70 hours according to ASTM Standard D395 Method B).

Abstract: The present invention provides a process for making fluorinated polymers and copolymers having stable end groups. The process includes (1) contacting a fluoromonomer, an initiator capable of producing stable end groups on the polymer chain, and a polymerization medium comprising carbon dioxide, and (2) polymerizing the fluoromonomer. The polymerization medium preferably comprises liquid or supercritical carbon dioxide. Advantageously, the process may also include the step of separating the fluoropolymer from the polymerization medium.The present invention also provides polymerization reaction mixtures useful in the processes of the present invention.

Abstract: A toner resin, comprising a styrene component, an acrylic acid ester component or methacrylic acid ester component or both, and a divinyl monomer component, the resin having a glass transition temperature of 50.degree. to 68.degree. C., a value of tan .delta., which is the ratio of the dynamic loss to the dynamic elastic modulus, of 0.3 to 0.7 as measured at 200.degree. C., a gel fraction of 55 to 83%, and a softening point at which the resin has a melting viscosity of 100,000 poises is 200.degree. to 410.degree. C. A toner having an excellent fixing property, non-offsetting property, and blocking resistance, and able to be used with a high-temperature high-speed copying machine is formed from this toner resin.

Abstract: The present invention provides a multi-phase polymerization process for making a water insoluble polymer. The process includes (1) providing a mixture comprising carbon dioxide and an aqueous phase, and containing a monomer and a polymerization initiator, and (2) polymerizing the monomer in the reaction mixture. The monomer may be a hydrocarbon or a fluorinated monomer. The polymerization initiator may be soluble in the aqueous phase, soluble in carbon dioxide, or insoluble in both the aqueous phase and carbon dioxide, such that the initiator forms a separate phase.The present invention also provides multi-phase polymerization reaction mixtures useful in the process of making water insoluble polymers.

Abstract: A substantially non-crosslinked low water-absorptive ocular lens material obtained by polymerizing polymerizable components comprising a methoxysilane compound (A) of the formula (I):X--Z--Si(OCH.sub.3).sub.n (R.sup.1).sub.3-n (I)wherein X is a (meth)acryloyloxy group, a vinyl group, a group of the formula H.sub.2 C.dbd.CH ##STR1## or an allyl group, Z is a direct bond or a C.sub.1-3 alkylene group, R.sup.1 is a C.sub.1-6 alkyl group, and n is an integer of from 1 to 3, and a hydrophobic silicon-containing monomer (B) which is copolymerizable with the methoxysilane compound (A) and which undergoes no crosslinking reaction.

Abstract: This invention covers the use of cross-linkable redispersible dispersion powders based on vinyl ester copolymers or (meth)acrylic acid ester copolymers as binders for the dry binding of fibre materials.

Abstract: A random copolymer corresponding to Formula I in free acid or salt form having the following types and numbers of monomer units; ##STR1## wherein A is selected from the moities (i) and (ii);--CR.sub.1 R.sub.2 --CR.sub.3 R.sub.4 -- (i)wherein R.sub.1 and R.sub.3 are selected from substituted benzene, C.sub.1-8 alkyl, C.sub.2-8 alkenyl, C.sub.2-8 alkylcarbonyl, C.sub.1-8 alkoxy, carboxyl and hydrogen, or R.sub.1 and R.sub.3 can together with R.sub.2 and/or R.sub.4 form a ring; and R.sub.2 and R.sub.4 are selected from hydrogen and C.sub.1-4 alkyl; and ##STR2## wherein R.sub.1 and R.sub.3 are as for (i) and R.sub.7, R.sub.8, R.sub.9 and R.sub.10 are individually selected from hydrogen and C.sub.1-6 alkyl, or R.sub.1 and R.sub.3 together with R.sub.7 and/or R.sub.8, R.sub.9 and R.sub.10 form a continuous C.sub.

Abstract: A inherently tacky pressure-sensitive adhesive copolymer is formed by copolymerizing at least one alkyl acrylate in the presence of a positive amount up to 50 percent by weight of the monomers of a polar acrylate monomer which, when homopolymerized, have a glass transition temperature less than 50.degree. C.

Abstract: A random copolymer corresponding to Formula I in free acid or salt form having the following types and numbers of monomer units; ##STR1## wherein A is selected from the moieties (i) and (ii);--CR.sub.1 R.sub.2 --CR.sub.3 R.sub.4 -- (i)wherein R.sub.1 and R.sub.3 are selected from substituted benzene, C.sub.1-8 alkyl, C.sub.2-8 alkenyl, C.sub.2-8 alkylcarbonyl, C.sub.1-8 alkoxy, carboxyl and hydrogen, or R.sub.1 and R.sub.3 can together with R.sub.2 and/or R.sub.4 form a ring; and R.sub.2 and R.sub.4 are selected from hydrogen and C.sub.1-4 alkyl; and ##STR2## wherein R.sub.1 and R.sub.3 are as for (i) and R.sub.7, R.sub.8, R.sub.9 and R.sub.10 are individually selected from hydrogen and C.sub.1-6 alkyl, or R.sub.1 and R.sub.3 together with R.sub.7 and/or R.sub.8, R.sub.9 and R.sub.10 form a continuous C.sub.

Abstract: There are provided acetal group-containing alkoxy-styrene polymers represented by the following formula I: ##STR1## wherein R.sub.1 and R.sub.3 may be the same or different, and represent a hydrogen atom or a methylene group; R.sub.2 represents ##STR2## wherein R.sub.4, R.sub.5, R.sub.6, R.sub.7 and R.sub.8 may be the same or different, and independently represent a hydrogen atom, an alkyl group or an aryl group; m+n=1; k is an integer of 1-5; and l is an integer of 0-5; and an acid-generating agent, and chemical amplified negative photoresist composition comprising the same. It shows excellent transparency and sensitivity to deep UV in addition to being resistant to dry etching and alkali-developable.

Abstract: The present invention pertains to a film for detecting chemical substances comprising a homopolymer or a copolymer having recurring units represented by the following formula (I): ##STR1## wherein X is --H, --F, --Cl, --Br, --CH.sub.3, --CF.sub.3, --CN or --CH.sub.2 CH.sub.3 ; and R.sup.1 is --R.sup.2 or --Z--R.sup.2 ;wherein Z is --O--, --S--, --NH--, --NR.sup.2' --, --(C.dbd.Y)--, --(C.dbd.Y)--Y--, --Y--(C.dbd.Y)--, --(SO.sub.2)--, --Y'--(SO.sub.2)--, --(SO.sub.2)--Y'--, --Y'--(SO.sub.2)--Y'--, --NH--(C.dbd.O)--, --(C.dbd.O)--NH--, --(C.dbd.O)--NR.sup.2' --, --Y'--(C.dbd.Y)--Y'-- or --O--(C.dbd.O)--(CH.sub.2).sub.n --(C.dbd.O)--O--;wherein Y is independently O or S, and Y' is independently O or NH, and n is an integer of 0 to 20;and wherein R.sup.2 and R.sup.2' represent independently a hydrogen atom, a linear alkyl group, a branched alkyl group, a cycloalkyl group, an unsaturated hydrocarbon group, an aryl group, a saturated or unsaturated hetero ring or derivatives thereof, provided that R.sup.

Abstract: The invention relates to fluorotelomers, their synthesis by free radical-initiated telomerization of fluoroalkenes (e.g. TFE) in which hydrochlorofluorocarbons (HCFC's) are used both as telogens and as solvents, and dispersions of the fluorotelomers in HCFC's. The fluorotelomers are normally solid, essentially non-distillable and highly crystalline, and their dispersions exhibit excellent lubricant properties and stability under normal usage and have a negligible impact on the environment compared to conventional telomer dispersions.

Abstract: The present invention relates to a process for the preparation of crosslinked polymers and copolymers of acrylic acid and methacrylic acid of formula ##STR1## wherein R.sub.1 is hydrogen or methyl. Said process, using ethyl formate as solvent, allows to obtain polymers having low residue of monomer and of solvent and with higher thickening capacity.

Abstract: A water retention aid/thickener composition containing: (a) from about 40 to about 75% by weight of a C.sub.1 -C.sub.8 alkyl acrylate; (b) from about 60 to about 25% by weight of methacrylic acid; and (c) from about 0.1 to about 5% by weight of an alkoxylated acrylate or methacrylate monomer containing at least three vinyl moieties, all weights being based on the weight of the composition.