Abstract: Filler-containing thermoplastic molding materials containing, as essential components,A) from 10 to 84% by weight of a thermoplastic polyamide,B) from 10 to 84% by weight of a modified polyphenylene ether,C) from 5 to 40% by weight of a fibrous or particulate filler or a mixture thereof, andD) from 1 to 20% by weight of a zinc sulfide pigment, and, in addition,E) from 0 to 30% by weight of an impact-modifying rubber andF) from 0 to 25% by weight of a flameproofing agent, are described.

Abstract: The invention relates to a dental filling material containing at least one polymerizable (meth)-acrylic acid ester, characterized in that it contains 20 to 90% by weight, calculated on the total composition, of a compound consisting of the structural element E2 and at least one of the structural elements E1 and/or E3 and/or E4 of the general formula ##STR1## where R.sub.1 denotes a methyl, ethyl, n-propyl, isopropyl or an unsubstituted or CH.sup.3 --C.sub.3 H.sub.7 --substituted phenyl radical, R.sub.2 denotes a CH.sub.2 .dbd.CH--, CH.sub.2 .dbd.CHCOO(CH.sub.2).sub.n --]or ##STR2## or R.sub.1, n denotes 0, 1, 2 or 3, and M denotes titanium or zirconium.

Abstract: Copolymers having the general formula: ##STR1## are useful as compatibility, dispersion and grinding agents for aqueous pigmentary suspensions formulated from a mixture of mineral pigments, at least one of which is hydrated calcium sulfate. These suspensions are useful in papermaking.

Abstract: Polymers and articles made therefrom having biocidal surfaces are disclosed wherein the biocidal agent is permanently bonded to the polymer surface. The polymers can be employed to inhibit microbial growth in the adjacent area of the polymer and as disinfectant for fluids such as water. Utility as a contact disinfectant is disclosed.

Abstract: A non-polymerizable polycarboxylate imparts greater wet strength to nonwovens bound by an emulsion polymer containing a polymerizable cross-linker.

Abstract: A highly filled PVC resin powder is formed by coating filler particles with a liquid and blending a dispersion grade PVC resin with the coated filler particles in a low shear mixer. Resin compositions having 60% to 95% filler can be formed. A majority of the resin particles have a size of less than 15 microns. The filler has a particle size distribution in which at least 50% by weight and preferably at least 95% by weight of the particles are retained on a 200 mesh (U.S. Standard) screen. The liquid is a plasticizer and/or stabilizer. Such a composition may be sintered to form a porous mass or layer and the mass or layer printed with a plastisol or acrylate ink.

Abstract: Free radical polymerization of monomers in the presence of t-amylperoxy pivalate as the free radical initiator is described. Copolymers of maleic anhydride and a vinyl monomer, e.g. a C.sub.1 -C.sub.5 alkyl vinyl ether, and water soluble polyvinylpyrrolidone, are representative polymers prepared in accordance with the process of the invention.

Abstract: A glass ionomer cement composition comprises poly(vinyl phosphonic acid) dissolved in its own mass of water; and (in treble the total mass of the solution) a powder, being glass or MgO or a cermet. The powder has to be deactivated so that the setting reaction with the acid is not too fast, and this is achieved either by a raised Si:Al ratio or by heat-treating.

Abstract: Disclosed are stabilizer compositions comprising specific mixed partial salts of a lower alkyl vinyl ether-maleic acid copolymer wherein said partial salts contain as the cationic salt function:(a) from about 10% to about 65% zinc or strontium cations; and(b) from about 10% to about 75% calcium cationsof the total initial carboxyl groups reacted. Also disclosed are denture stabilizing compositions comprising these mixed partial salts, as well as denture stabilizing compositions comprising a safe and adhesively effective amount of two or more denture adhesive components wherein one of said denture adhesive components is the mixed partial salt(s) of the present invention.

Abstract: A thermoset resin composition comprises a compound (A) having one or more maleimido groups in its molecule and at least one vinylbenzyl ether compound (B) selected from the group consisting of compounds (B.sub.1) having at least two vinylbenzyl ether groups bonded to a naphthalene nucleus in its molecule and compounds (B.sub.2) having at least two vinylbenzyl ether groups bonded to a benzene nucleus having at least one substituent selected from the group consisting of hydroxyl groups, alkyl groups and alkoxy groups in its molecule.The composition exhibits excellent low-temperature curing properties, heat resistance and mechanical strength.

Abstract: The present invention is a process for preparing a polymer having perfluorocyclobutane rings by the steps of (a) contacting monomers having at least two dimerizable perfluorovinyl groups; and (b) exposing the monomers to sufficient heat and for a sufficient time that a polymer containing perfluorocyclobutane rings is formed wherein at least about 0.05 mole percent of the monomer, have at least 3 dimerizable perfluorovinyl groups and polymers prepared thereby.

Abstract: A polyvinyl chloride polymer or copolymer having excellent thermal resistance and being free from FEs and offensive smell can be obtained in a high yield through a polymerization reaction of vinyl chloride monomer alone or together with a vinyl monomer copolymerizable therewith by the use of a combination system polymerization initiator consisting of (A) .alpha.,.alpha.'-bis(neodecanoylperoxy)-diisopropylbenzene, and (B) at least one of peroxy ester, diacyl peroxide and peroxy dicarbonate, each of which has a 10-hour half-life period temperature within the range of 40.degree.-65.degree. C. in its 0.1 mol concentration solution in benzene.

Abstract: A process is described for fixing an inorganic species in an organic matr which comprises bringing a compound of the formula MR.sub.n in which M is selected from sub-group metals, lanthanides, actinides, Al, Sn, B and Si, and the radicals R can be replaced by a complexing agent, into contact with a complexing agent, the complexing agent containing a functional group which is capable of participating in a polymerization or polycondensation reaction. After complexing, hydrolysis and condensation are preferably first carried out, followed by polymerization or polycondensation.

Abstract: A dental glass ionomer cement composition comprises:(a) 5 to 100 parts by weight of a polymer of an .alpha.-.beta. unsaturated carboxylic acid having a weight average molecular weight of 5,000 to 40,000,(b) 5 to 100 parts by weight of a fluoroaluminosilicate glass powder having an average particle size of 0.02 to 10 .mu.m and a specific gravity of 2.4 to 4.0 and capable of reacting with said "polymer of an .alpha.-.beta. unsaturated carboxylic acid having a weight average molecular weight of 5,000 to 40,000",(c) 5 to 100 parts by weight of a polymerizable unsaturated organic compound having at least one CH.sub.2 .dbd.C(R1)--COO--group wherein R1=H or CH.sub.3,(d) 0.01 to 5 parts by weight of a polymerization catalyst,(e) 2 to 50 parts by weight of water,(f) 0.01 to 20 parts by weight of a surface active agent, and(g) 0.01 to 5 parts by weight of a reducing agent, and optionally h. 0 to 50 parts by weight of an inorganic filler having an average particle size of 0.02 to 10 .mu.

Abstract: This invention relates to a process for making nitrile rubber characterized by being essentially gel-free and at least about 90% saturated. The process comprising reacting an ethylenically unsaturated polymer in latex from, hydrazine, and an oxidant, followed by coagulation and filtration in order to isolate the reduced rubber. The process utilizes a reaction mixture containing a high molar ratio of hydrazine to unsaturated polymer.

Abstract: Selective hydrogenation of the carbon-carbon double bonds of conjugated diene copolymers is effected in homogeneous solution in an organic solvent in the presence of certain divalent ruthenium carbonyl complex catalysts containing phosphine ligands having bulky alkyl substituents. The ruthenium catalysts have the general formula:RuXY(CO)ZL.sub.2 (1)orRuX(NO)(CO)L.sub.2 (2)wherein X is a halogen atom, most preferably chlorine, or a carboxylate group, Y is a halogen atom, more preferably chlorine, a hydrogen atom, a phenyl group, a carboxylate group or phenylvinyl group, Z is carbonyl, pyridine, benzontrile, trimethylphosphite or no ligand and L is a phosphine ligand having at least one bulky alkyl substituent, preferably tricyclohexyl or triisopropyl.

Abstract: The present invention provides a wall for a package comprising: (a) an outer set of one or more layers (1-4) and (b) an inner set of one or more layers (5-6) which layer or the outermost of which layers (5) comprises a composition comprising a polymer and having oxygen-scavenging properties, wherein (i) the outer set of layers would have, if separate from the inner set and in the absence of any oxygen-scavenging properties in any of the layers or the layer constituting the set, a permeance, for oxygen, of not more than 1.5 cm.sup.3 /(m.sup.2 atm day); (ii) the inner set of layers would have, if separate from the outer set and in the absence of oxygen-scavenging properties in any of the layers or the layer constituting the set, a permeance, for oxygen, of at least 2.0 cm.sup.3 /(m.sup.2 atm day); and (iii) the inner set of layers would have, if separate from the outer set, a permeance, for oxygen, less than the permeance specified in (ii) by at least 1.0 cm.sup.3 /(m.sup.

Abstract: It is sometimes desirable to cure rubber compositions utilizing non-sulfur curing agents. The subject invention reveals rubber compositions which can be cured without utilizing sulfur or sulfur containing compounds. The subject invention more specifically discloses a rubber composition which can be crosslinked by heating which is comprised of (1) at least one rubber having pendant blocked isocyanate groups bound thereto; and (2) at least one compound which contains at least 2 Zerewitinoff active hydrogens.This invention also discloses crosslinking of elastomer compounds containing (1) at least one rubber having functionalized groups containing at least one Zerewitinoff active hydrogen and (2) at least one compound which contains at least two blocked isocyanate groups. This invention also discloses self-curing elastomers containing both blocked isocyanate groups and groups containing at least one active Zerewitinoff hydrogen.

Abstract: This invention provides novel side chain copolymers which exhibit nonlinear optical response, and which have utility as a transparent optical component in all-optical and electrooptical light switch and light modulator devices.

Abstract: Functionalized polymer microparticles having particle diameters of from about 200 to about 4000.ANG. are prepared and are useful in facilitating a variety of flocculation and thickening of dispersions of suspended solids applications.