Abstract: The present invention relates to a polymer latex comprising: (A) particles of a latex polymer (A) obtainable by free-radical emulsion polymerization of a mixture of ethylenically unsaturated monomers the latex polymer comprising a plurality of functional groups (x); and (B) a compound bearing a beta-hydroxy ester linkage and at least one additional functional group (y) reactive with the functional groups (x) on latex polymer (A), to a method for preparation of said polymer latex, to its use, to a method for dip-molding and to articles obtained from the latex.

Abstract: This invention relates to novel hydrogenation catalyst compositions obtainable from reacting metal-based complex hydrogenation catalysts with specific co-catalysts and to a process for selectively hydrogenating nitrile rubbers in the presence of such novel hydrogenation catalyst compositions.

Abstract: A polymer latex is described for the preparation of an elastomeric film obtained by free-radical emulsion polymerization of a mixture of ethylenically unsaturated monomers comprising: a) 15 to 99 wt.-% of conjugated dienes; b) 0 to 80 wt.-% of ethylenically unsaturated nitrile compounds; c) 0 to 70 wt.-% of vinyl aromatic monomers; the sum of ethylenically unsaturated nitrile compounds b) and vinyl aromatic monomers c) being 0.95 to 84.95 wt.-% d) 0.05 to 10 wt.-% of ethylenically unsaturated acids wherein the ethylenically unsaturated acids comprise d1) an ethylenically unsaturated acid comprising an acid functional group; and a spacer group separating the ethylenically unsaturated group and the acid functional group by at least 4 atoms; and e) 0 to 65 wt.-% of co-polymerizable ethylenically unsaturated compounds, wherein monomers a) to e) are as defined.

Abstract: An aqueous polymer latex composition is described for the preparation of an elastomeric film comprising: (I) particles of a latex polymer obtained by free-radical emulsion polymerization of a mixture of ethylenically unsaturated monomers, the particles bearing functional groups (a); and (II) a cross-linking component selected from monomeric compounds and oligomeric or polymeric compounds that are not prepared be free-radical addition polymerization, the cross-linking component comprising functional groups (b) and (c) that are different from each other, wherein functional group (b) forms upon reaction with functional group (a) a thermally reversible linkage selected from one or more of (i) a linkage having the structural formula ?wherein X, n, R1 and R2 are as defined; and (ii) a beta-hydroxy ester linkage; and functional groups (c) on different molecules of component (II) are capable of reacting with each other to provide elastomeric films having self-healing properties that can be repaired a

Abstract: The present invention relates to methods for reprocessing elastomeric films or articles comprising an elastomer film wherein the elastomeric film is made from a polymer latex comprising: (a) particles of a carboxylated conjugated diene nitrile latex polymer (a) obtainable by free-radical emulsion polymerization of a mixture of ethylenically unsaturated monomers comprising: 15 to 99 wt.-% of conjugated dienes; 1 to 80 wt.-% of monomers selected from ethylenically unsaturated nitrile compounds; 0.05 to 10 wt.-% of ethylenically unsaturated carboxylic acids and/or salts thereof; 0 to 50 wt.-% of vinyl aromatic monomers; and 0 to 65 wt.

Abstract: This invention relates to a novel process for selectively and efficiently hydrogenating nitrile rubber in the presence of specific complex catalysts system comprising an NHC-ligand comprising Ru-complex catalyst and a specific hydrogenation enhancer.

Abstract: This invention relates to a novel process for selectively and efficiently hydrogenating nitrile rubber in the presence of specific complex catalysts system comprising an NHC-ligand comprising Ru-complex catalyst and a specific hydrogenation enhancer.

Abstract: This invention relates to novel hydrogenation catalyst compositions obtainable from reacting metal-based complex hydrogenation catalysts with specific co-catalysts and to a process for selectively hydrogenating nitrile rubbers in the presence of such novel hydrogenation catalyst compositions.

Abstract: The present invention relates to a polymer latex for dip-molding applications including: particles of a carboxylated conjugated diene nitrile latex polymer in combination or association with particles of a latex polymer including at least one oxirane-functional group, to the use of said polymer latex for the production of dip-molded articles or for coating or impregnating a substrate, to compounded compositions including said polymer latex, to a method for making dip-molded articles and to articles made by using said polymer latex.

Abstract: The present invention relates to a polymer latex for dip-molding applications including: particles of a carboxylated conjugated diene nitrile latex polymer in combination or association with particles of a latex polymer including at least one oxirane-functional group, to the use of said polymer latex for the production of dip-molded articles or for coating or impregnating a substrate, to compounded compositions including said polymer latex, to a method for making dip-molded articles and to articles made by using said polymer latex.

Abstract: Catalyst compositions based on Ruthenium- or Osmium-based complex catalysts and specific co-catalysts are provided for selectively hydrogenating nitrile rubbers in the presence of such catalyst compositions.

Abstract: This invention relates to novel catalyst compositions based on Ruthenium- or Osmium-based complex catalysts of the Grubbs-Hoveyda, Grela or Zhan type and specific co-catalysts comprising at least one vinyl group, pref. ethyl vinyl ether, and to a process for selectively hydrogenating nitrile rubbers in the presence of such catalyst compositions, preferably with a preceding metathesis step using the same complex catalyst as in the hydrogenation step.

Abstract: The present invention relates to ruthenium- or osmium-based complex structures, to the synthesis thereof and their use as catalysts for hydrogenating unsaturated substrates.

Abstract: This invention relates to novel catalyst compositions based on Ruthenium- or Osmium-based complex catalysts of the Grubbs-Hoveyda, Grela or Zhan type and specific co-catalysts comprising at least one vinyl group, pref. ethyl vinyl ether, and to a process for selectively hydrogenating nitrile rubbers in the presence of such catalyst compositions, preferably with a preceding metathesis step using the same complex catalyst as in the hydrogenation step.

Abstract: The present invention relates to ruthenium- or osmium-based complex structures, to the synthesis thereof and their use as catalysts for hydrogenating unsaturated substrates.

Abstract: Catalyst compositions based on Ruthenium- or Osmium-based complex catalysts and specific co-catalysts are provided for selectively hydrogenating nitrile rubbers in the presence of such catalyst compositions.

Abstract: This invention relates to a novel process for selectively hydrogenating nitrile rubbers in the presence of specific Ruthenium based complex catalysts without simultaneous molecular weight degradation by a metathetic reaction.