Abstract: The disclosure describes an improved process for the preparation of uniform, spherical beads of up to 5 mm diameter of a crosslinked, water-insoluble hydrogel by suspension polymerization in a concentrated aqueous salt solution of 95-30% by weight of a monoolefinic water-soluble monomer containing at least 5% of a hydroxy substituted hydrophilic vinyl monomer with 5-70% by weight of a terminal diolefinic macromer crosslinking agent in the presence of water-insoluble, gelatinous, strong water-bonding inorganic metal hydroxides as suspending agents in the absence of excess alkali. The hydrogels have a host of pharmaceutical and industrial uses.

Abstract: Low molecular weight isocyanate-functional acrylic polymers are provided, which contain at least 10% by weight of copolymerized isocyanatoalkyl (meth)acrylate, are substantially free of toxic monomeric isocyanates, and have the following general structure: ##STR1## where R is alkyl or aryl,R.sub.1 is hydrogen or methyl;X is COO--A--NCO or a mixture of COO--A--NCO and at least one of phenyl, COOR.sub.2, ##STR2## Cl, H; where A is an alkylene group having 2-6 carbon atoms, andR.sub.2 is an alkyl group having 1-18 carbon atoms;and n is 2-400.These polymers can be crosslinked and are useful in a variety of applications such as finishes, pigment surface treatments and dispersants, and rheology control agents.

Abstract: Molding compositions containing a divinyl polyester resin, a polymerizable monomer, an epihalohydrin and, optionally, catalyst and other additives. The epihalohydrin improves the toughness of the divinyl polyester molding compositions.

Abstract: This invention relates to a novel process for producing polymer/polyols characterized by the use of specific amounts of particular monomer combinations and by maintaining a low monomer concentration throughout the reaction mixture during the process. The monomer combinations are acrylonitrile or methacrylonitrile and styrene or alpha-methyl styrene. The process produces novel polymer/polyols characterized by their convertibility to low density, water-blown polyurethane foams having reduced scorch and by the relatively small size of the polymer particles.

Abstract: A resin composition is disclosed comprising, as essential ingredients, (I) a urethanized epoxy resin or a urethanized epoxy resin acrylate or methacrylate, (II) a ketone resin and (III) a cross-linkable or polymerizable compound containing at least two ethylenically unsaturated groups.

Abstract: Chemically modified thickenable vinyl esters prepared by reacting an ethylenically unsaturated monocarboxylic acid with a polyepoxide in the presence of a small amount of a dicarboxylic acid. These resins are usually diluted with a copolymerizable monomer such as styrene, blended with a Group II metal oxide or hydroxide and other additives, and cured with a free-radical catalyst.

Abstract: A process is disclosed for fabricating a thermoplastic, which thermoplastic is either a thermoplastic ionomer or a multiphase graft or block copolymer of the ABA (AB).sub.n, or ##STR1## wherein n is greater than 1 and wherein the polymer blocks, A and B, are each thermoplastic resins having softening points substantially above room temperature with the B block being present in at least about 30 wt. % of the total polymer. The thermoplastic composition is first suspended in finely divided form in a liquid medium in a sufficient amount such that the solids content of the resulting suspension is in the range of from about 15 to about 75 wt. %. The liquid medium must be nonvolatile and must be capable of plasticizing the B block (or the backbone if the ionomer is employed) of the thermoplastic composition above the softening point of that block but must not be capable of plasticizing the A block to a substantial extent. The suspension is then applied as a coating to any desired surface, e.g.

Abstract: Chelate resins are obtained by introducing an effective amount of chelate active groups into the cured reaction product of an epoxide and a polyalkylenepolyamine. For example, an alkali metal salt of a halogenated carboxylic acid such as sodium chloroacetate, is reacted with the reaction product of triethylenetetraamine and diglycidyl ether of bisphenol A to form a chelate resin.

Abstract: A settable flexible epoxy resin composition comprising:(A) 100 parts by weight of an epoxy resin, and(B) 5 to 200 parts by weight of a liquid chloroprene copolymer having a number average molecular weight of about 500 to about 10,000 and prepared by copolymerizing70 to 99 parts by weight of (i) a chloroprene monomer or (ii) at least 50% by weight of a chloroprene monomer plus a monomer copolymerizable therewith, and1 to 30 parts by weight of one or more monomers selected from the group consisting of(a) an unsaturated glycidyl ester represented by the formula (I): ##STR1## wherein R is a hydrogen atom, a methyl group or an ethyl group; (B) A POLYFUNCTIONAL ACRYLATE OR A POLYFUNCTIONAL METHACRYLATE; AND(c) an unsaturated carboxylic acid;In the presence of 0.5 to 20 parts by weight of a mercaptocarboxylic acid based on 100 parts by weight of the monomers.

Abstract: Graft polymer dispersions are prepared by the in situ polymerization in the presence of a free radical catalyst of an ethylenically unsaturated monomer or mixture of monomers in a liquid polyol employing as the free radical catalyst a liquid unsymmetrically-substituted azo compound having a melting point less than 30.degree. C. and a ten hour half-life between 55.degree. C. and 100.degree. C. The dispersions are low viscous liquids which may be advantageously employed in the preparation of polyurethane foams.