Abstract: Rubber compounds containing a halobutyl elastomer, at least one additional elastomer, a mineral filler and at least a three component mixed modifier system comprising a silane compound, a phosphine compound and an additive containing at least one hydroxyl group and a functional group containing a basic amine. A process for preparing the compounds is also disclosed. The compounds are particularly useful in tire treads and exhibit improved processability, traction, rolling resistance and wear properties.

Abstract: Rubber compounds containing a halobutyl elastomer, at least one additional elastomer, a mineral filler and at least a three component mixed modifier system comprising a silane compound, a phosphine compound and an additive containing at least one hydroxyl group and a functional group containing a basic amine. A process for preparing the compounds is also disclosed. The compounds are particularly useful in tire treads and exhibit improved processability, traction, rolling resistance and wear properties.

Abstract: Rubber compounds containing a halobutyl elastomer, at least one additional elastomer, a mineral filler and at least a three component mixed modifier system comprising a silane compound, a phosphine compound and an additive containing at least one hydroxyl group and a functional group containing a basic amine. A process for preparing the compounds is also disclosed. The compounds are particularly useful in tire treads and exhibit improved processability, traction, rolling resistance and wear properties.

Abstract: Rubber compounds containing a halobutyl elastomer, at least one additional elastomer, a mineral filler and at least a three component mixed modifier system comprising a silane compound, a phosphine compound and an additive containing at least one hydroxyl group and a functional group containing a basic amine. A process for preparing the compounds is also disclosed. The compounds are particularly useful in tire treads and exhibit improved processability, traction, rolling resistance and wear properties.

Abstract: The present invention relates to polymer composites containing at least one, optionally hydrogenated, nitrile rubber polymer having a Mooney viscosity (ML 1+4 @ 100° C.) in the range of from 50–30 at least one filler and optionally at least one cross-linking agent, a process for preparing said polymer composite wherein at least one, optionally hydrogenated, nitrile rubber polymer having a Mooney viscosity (ML 1+4 @ 100° C.) in the range of from 50–30, at least one filler and optionally at least one cross-linking agent are mixed and a process for the manufacture of a shaped article including the step of injection molding a polymer composite containing at least one, optionally hydrogenated, nitrile rubber polymer having a Mooney viscosity (ML 1+4 @ 100° C.) in the range of from 50-30, at least one filler and at least one cross-linking agent.

Abstract: The present invention is directed to a nitrile polymer vulcanizate having improved hot air aging characteristics. The nitrile polymer vulcanizate may be produced by admixing a composition containing: (i) a nitrile polymer; (ii) a filler; (iii) a metal salt of a secondary amine; (iv) a vulcanization system; and optionally (v) an additive selected from the group consisting of a strong base, a salt of a strong base and a weak acid, a salt of a weak acid, a carbodiimide, a polycarbodiimide and mixtures thereof.

Abstract: The present invention is directed to a nitrile polymer vulcanizate having improved hot air aging characteristics.

Abstract: The present invention relates to a polymer blend containing of at least two different hydrogenated nitrile rubbers and at least one olefin-vinylacetate or olefin-acrylate rubber, a rubber compound containing said polymer blend and at least one filler, a curable rubber compound containing said rubber compound and at least one vulcanization agent and a shaped article containing said rubber compound.

Abstract: The present invention relates to polymer composites containing at least one, optionally hydrogenated, nitrile rubber polymer having a Mooney viscosity (ML 1+4 @ 100° C.) in the range of from 50-30 at least one filler and optionally at least one cross-linking agent, a process for preparing said polymer composite wherein at least one, optionally hydrogenated, nitrile rubber polymer having a Mooney viscosity (ML 1+4 @ 100° C.) in the range of from 50-30, at least one filler and optionally at least one cross-linking agent are mixed and a process for the manufacture of a shaped article including the step of injection molding a polymer composite containing at least one, optionally hydrogenated, nitrile rubber polymer having a Mooney viscosity (ML 1+4 @ 100° C.) in the range of from 50-30, at least one filler and at least one cross-linking agent.

Abstract: The invention relates to anti-aging agents for organic polymers based on salts of sterically hindered phenolic compounds with at least two phenolic OH groups. The anti-aging agents according to the present invention display a significantly better anti-aging action than the sterically hindered phenolic compounds underlying the salts.

Abstract: The present invention is directed to a nitrile polymer vulcanizate having improved hot air aging characteristics. The nitrile polymer vulcanizate may be produced by admixing a composition containing: (i) a nitrile polymer; (ii) a filler; (iii) a metal salt of a secondary amine; (iv) a vulcanization system; and optionally (v) an additive selected from the group consisting of a strong base, a salt of a strong base and a weak acid, a salt of a weak acid, a carbodiimide, a polycarbodiimide and mixtures thereof.

Abstract: A nitrite polymer vulcanizate having improved hot air aging characteristics is described. The nitrile polymer vulcanizate may be produced admixing a composition comprising: (i) a nitrite polymer; (ii) a filler; (iii) an additive selected from the group comprising a strong base, a salt of a strong base and a weak acid, a salt of a weak acid, a carbodiimide, a polycarbodiimide and mixtures thereof; and (iv) a vulcanization system. A vulcanizable composition useful for producing such a vulcanizate and a method for improving the hot air aging characteristics of a nitrite polymer are also described.

Abstract: The invention relates to anti-aging agents for organic polymers based on salts of sterically hindered phenolic compounds with at least two phenolic OH groups. The anti-aging agents according to the present invention display a significantly better anti-aging action than the sterically hindered phenolic compounds underlying the salts.

Abstract: A nitrite polymer vulcanizate having improved hot air aging characteristics is described. The nitrile polymer vulcanizate may be produced admixing a composition comprising: (i) a nitrite polymer; (ii) a filler; (iii) an additive selected from the group comprising a strong base, a salt of a strong base and a weak acid, a salt of a weak acid, a carbodiimide, a polycarbodiimide and mixtures thereof; and (iv) a vulcanization system. A vulcanizable composition useful for producing such a vulcanizate and a method for improving the hot air aging characteristics of a nitrite polymer are also described.

Abstract: A nitrite polymer vulcanizate having improved hot air aging characteristics is described. The nitrite polymer vulcanizate may be produced admixing a composition comprising: (i) a nitrite polymer; (ii) a filler; (iii) an additive selected from the group comprising: a strong base, a salt of a strong base and a weak acid, a salt of a weak acid, a carbodiimide, a polycarbodiimide and mixtures thereof; and (iv) a vulcanization system. A vulcanizable composition useful for producing such a vulcanizate and a method for improving the hot air aging characteristics of a nitrite polymer are also described.