Abstract: The present invention relates to a process for minimizing or reducing the amount of residual free hydrazine in polymer latices. The process is particularly useful in the manufacture of hydrogenated nitrile rubber which is resistant to oxidative degradation at high temperatures, as well as resistant to corrosive environments such as acid environments. Nitrile rubbers are useful in the manufacture of fan belts, seals, gaskets, and hoses in increasingly small and hot-running car engines.

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: Polymers comprising a polymer backbone having pendant or terminal betadiketone groups which contain at least one trifluoromethyl group. The betadiketone groups may be selected from trifluorocetoacetate groups (general formula I); ##STR1## hexafluoroacetylacetone groups (general formula II); ##STR2## or trifluoro-2,4-pentanedione groups (general formula III); ##STR3## where indicates the polymer backbone, R is an alkyl, substituted alkyl, aryl or substituted aryl group and R.sup.1 is hydrogen, alkyl or substituted alkyl. Neither the R group nor the R.sup.1 group should contain any group which is sufficiently basic to initiate cyanoacrylate polymerization or any group sufficiently acidic to interfere with chain transfer.

Abstract: 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. The invention includes polymers having a backbone comprising hydrocarbyl groups, perfluorocyclobutane rings and non-carbon atoms and polymers of at least 10,000 molecular weight having repeating units [O-(CFR.sub.f).sub.n -O-perfluorocyclobutane].

Abstract: Ion selective parts are described which comprise a polymeric material, an ion selective component and optionally furthermore a plasticizer and which ion sensitive parts are suited for the determination of the concentration or activity of ions in liquid media. The polymeric material of said ion sensitive parts is a copolymer in which 5-25 mol-% of the monomeric units of said copolymer are substituted with one or more hydrophilic substituents which are selected from the group comprising hydroxy groups, carboxylic acid groups, sulphonic acid groups and phosphonic acid groups. The inventive ion selective parts have, compared with corresponding ion selective parts in which the polymeric material is free of the stated hydrophilic groups or has a lower content of said hydrophilic groups, a better stability of the standard potential E.sub.o and a lower asymmetry potential or no asymmetry potential at all.

Abstract: Avidin and streptavidin modified water-soluble polymers are provided, such modified polymers being exemplified by, but not limited to, water-soluble polyacrylamides being substituted by multiple substituents of avidin or streptavidin. The avidin and streptavidin modified polymers provided, may be stored, and later used to bind biotinylated antibiodies, biotinylated toxins, or biotinylated isotope-labelled proteins, thus producing homo- or heteroconjugates of known composition. A process for the preparation of certain of the avidin or streptavidin modified polymers and conjugates thereof is also provided.

Abstract: Novel compounds have at least one perfluorocyclobutane ring and at least two functional groups suitable for forming condensation polymers. Preferably the compounds have a structures represented by Formula II: ##STR1## wherein R and R' independently represent optionally inertly substituted groups; X and X' represent any molecular structures which link R and R' with the perfluorocyclobutane ring; n and n' are the number of G and G' groups, respectively; and G and G' independently represent any reactive functional groups or any groups convertible into reactive functional groups. The compound are preferably prepared by a process of thermally dimerizing trifluorovinyl compound to form a compounds of Formula IG.sub.n --R--X--CF.dbd.CF.sub.2wherein G represents G or G' in Formula II; X represents X or X' of Formual II; and n represents n or n' of Formula II, to form a compound having a perfluorocyclobutane group.

Abstract: An interpolymer that is substantially devoid of formaldehyde and that does not evolve formaldehyde nor decomposes to produce any substantial amount of formaldehyde, is used in the production of impregnated or treated paper, woven and nonwoven fabrics. The interpolymer is produced in latex form by polymerizing in the presence of water, an emulsifier and in initiator, a monomer charge containing at least one polymerizable ethylenically unsaturated monomer and a N-alkylol amide of an alpha, beta ethylenically unsaturated carboxylic acid where the alkylol group contains at least two carbon atoms. Alternatively, the N-alkylol amide can be produced in situ by the reaction of amide of an alpha, beta ethylenically unsaturated carboxylic acid with the corresponding aldehyde to give the desired N-alkylol amide having at least two carbon atoms in the alkylol group.

Abstract: A composite of a homo- or co-polyolefin having an average molecular weight greater than 100,000 with from 30 to 50% by volume of a particulate inorganic solid for use in endoprosthesis.

Abstract: A thermoplastic methacrylimide group-containing resin composition comprised of (a) a methacrylimide group-containing polymer comprising 5 to 100% by weight of units of an imide ring structure represented by the following structural formula (I): ##STR1## wherein R.sub.1 stands for a hydrogen atom, a substituted or unsubstituted alkyl, cycloalkyl, aryl, alkaryl, aralkyl or allyl group having 1 to 20 carbon atoms,and 0 to 95% by weight of units derived from at least one monoethylenically unsaturated monomer, and (b) a small amount of a tetramethylpiperidine derivative is described. A shaped article made from this composition has a highly improved weatherability.

Abstract: A bonding composition comprising an aqueous dispersion is described, which is used to bond natural and synthetic elastomers to metallic and nonmetallic substrates under vulcanizing conditions. Such dispersions contain an organic polymeric film-forming substance, an aromatic polynitroso compound, and a coactivator and optionally contain conventional adhesion promoters, fillers and processing aids. In order to widen the field of application and to ensure a high stability of the bond against corrosive influences, the coactivator particularly consists of phenylene bis-maleic acid imide, but one more of the following may be used: triallyl- cyanurate, triallylisocyanurate, diallylacrylamide, tetraallylterephthalamide, tris(1-methyl-2-propenyl) isocyanurate, trivinylisocyanurate, triallyltrimellitate, diallylphthalate, ethylene-glycoldimethacrylate, trimethylolpropanetrimethacrylate, and 1,3-butyleneglycoldimethacrylate.

Abstract: Polyacrylamide gels containing bound dye indicator molecules being sensitive to pH variation are treated with an aqueous solution for a period of time until the shifting of the pK value of the gel, due to the treatment, has finished.

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 disclosed 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: A coating composition containing a carboxyl functional polymeric emulsion or dispersion, a carbodiimide and a transition metal catalyst which upon curing provides coatings with improved resistance properties.

Abstract: The invention provides (co)polymers having the formula (I): ##STR1## wherein M is hydrogen, a metal ion or an ammonium cation;x is 1, 2 or 3;y is an integer from 2 to 100; andn is 1, 2 or 3.The (co)polymers of formula I are corrosion and/or scale inhibitors for the protection of metal surfaces in contact with water.

Abstract: A process for preparing water-scale inhibitors and, more specifically, a neat process for preparing acrylic acid/ethylene glycol graft co-polymers and a method for their use as scale inhibitors.

Abstract: A process for producing a highly water adsorptive polymer, which comprises subjecting an aqueous solution of partially neutralized sodium acrylate wherein 20 to 50% or less of the carboxyl group has been neutralized to its sodium salt, the concentration of the partially neutralized sodium acrylate in the aqueous solution being 45 to 80% by weight, to solution polymerization in the presence of a crosslinking agent and optionally not exceeding 20 mol % based on the partially neutralized sodium acrylate of at least one basic vinyl monomer selected from the group consisting of (meth)acrylamide, N,N-dimethyl(meth)acrylamide, dimethylaminoethyl(meth)acrylamide, 2-vinylpyridine, and 4-vinylpyridine with the use of a water soluble radical polymerization initiator.

Abstract: This invention relates to novel reactive amino or hydrazino peroxides (hereinafter generally referred to as "AHP's") and derivatives all having a Structure A:(P--R11--X--(--NH--).sub.x --R22--).sub.y --Q].sub.z Ain which the definitions of P, R11, R22, X, Q and x, y and z are given in the Summary of The Invention section, for example, 4,4-di-(t-butylperoxy)pentanohydrazide (I-1), and the use of these novel compounds in curing unsaturated polyester resins, in initiating polymerization of ethylenically unsaturated monomers, for modifying rheology, for crosslinking and curing olefin polymers and elastomers, for producing novel graft and block copolymers, and for producing novel polymers with covalently bound performance additive functions.

Abstract: Trialkylsilyloxy-1,1-diphenyl ethylenes corresponding to general formula I, new polymers produced therewith terminated by aryl trialkylsilyl ether groups or by phenolic hydroxyl groups and a process for the production of these polymers by anionic polymerization ##STR1## in which R.sup.1, R.sup.2 =H, C.sub.1 -C.sub.4 alkyl, OCH.sub.3,R.sup.3 =H, C.sub.1 -C.sub.4 alkyl, O--C.sub.1 -C.sub.4 alkyl,R.sup.4 =H, C.sub.1 -C.sub.4 alkyl,R.sup.5 =C.sub.1 -C.sub.4 alkyl,R.sup.6 =H, C.sub.1 -C.sub.4 alkyl.

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.