Abstract: The present invention relates to bis-amide linked rosin acid derivatives which are useful as a rubber additive. In one embodiment, the amide linked rosin acid derivative may serve as a total or partial replacement for antiozonants. The bis-amide linked rosin acids are prepared by reacting abietic acid and/or dehydroabietic acid with a diamine under amidation conditions.

Abstract: High vinyl polybutadiene rubber has a combination of properties which makes it highly suitable for utilization in many applications. For instance, high vinyl polybutadiene possesses a number of properties that make it desirable for utilization in building tires. However, high vinyl polybutadiene rubber does not generally have optimal cure characteristics. More specifically, high vinyl polybutadiene rubber has a slow cure rate and in some cases the ultimate degree of cure which can be attained is lower than desired. This invention discloses a high vinyl polybutadiene rubber which has enhanced cure characteristics. The high vinyl polybutadiene rubbers of this invention are prepared by lightly halogenating a standard high vinyl polybutadiene which has a vinyl content of at least about 60%.

Abstract: This invention relates to a novel class of polymeric compositions which have molecular weights ranging from 300 to 9000 and are the reaction product of (a) an alkyl or cycloalkyl substituted diphenyldiamine and (b) a vinyl ether. The polymeric diphenyldiamine compounds are useful as an antiozonant in diene containing polymers and surprisingly accelerate the rate of cure of the diene containing polymers.

Abstract: This invention relates to a novel class of polymeric compositions which have molecular weights ranging from 300 to 3000 and are the reaction product of (a) an alkyl or cycloalkyl substituted diphenyldiamine and (b) a conjugated or nonconjugated diene. The polymeric diphenyldiamine compounds are particularly useful as an antiozonant in diene containing polymers.

Abstract: The present invention relates to alkyl (C.sub.6 -C.sub.22) amides of rosin acids which are useful as a total or partial replacement for extender or processing oil in rubber formulations. Addition of the alkyl (C.sub.6 -C.sub.22) amides of rosin acid also significantly reduce rheometer t25 and t90 values.

Abstract: The present invention relates to vulcanizable rubber compositions containing a methylene donor and a hydroxy-aryl substituted monomaleimide. The substituted monomaleimides may be used as a replacement for resorcinol and function as a methylene acceptor. The vulcanizable rubber compositions exhibit improved rubber/reinforcement interaction for increased adhesion and tear in rubber. These vulcanizable rubber compositions also contain a vulcanizing agent.

Abstract: The present invention relates to alkyl (C.sub.12 -C.sub.22) esters of rosin acids which are useful as a total or partial replacement for extender or processing oil in rubber formulations. Addition of the alkyl (C.sub.12 -C.sub.22) esters of rosin acid improve the tear of the vulcanizate.

Abstract: The present invention relates to the preparation of the p-hydroxydiphenylamine ester of rosin acid. The process involves first reacting hydroquinone and aniline in the presence of a bentonite catalyst to form a reaction mixture containing p-hydroxydiphenylamine. To this reaction mixture is added rosin acid under esterification conditions to form the p-hydroxydiphenylamine ester.

Abstract: The present invention relates to the use of a mixture of alkyl (C.sub.6 -C.sub.18) esters of rosin acids which are useful as a total or partial replacement for conventional waxes and diamine antidegradants in rubber formulations. Addition of the mixture of alkyl (C.sub.6 -C.sub.18) esters of rosin acid improve the weathering resistance of cured rubber compositions.

Abstract: The present invention relates to a hydroformylated thermal oil which is useful as a total or partial replacement for extender or processing oil in rubber formulations. The hydroformylated thermal oil is prepared by reacting decarboxylated rosin acid with carbon monoxide and hydrogen under hydroformylation conditions in the presence of a hydroformylation catalyst and organic reaction solvent.

Abstract: The present invention relates to amide linked rosin acid derivatives which are useful as a total or partial replacement for extender or processing oil in rubber formulations. The amide linked rosin acid derivatives improve Strebler adhesion in rubber compositions and also significantly reduce rheometer t25 and t90 values. The amide linked rosin acids are prepared by reacting abietylamine or dehydroabietylamine with abietic acid or dehydroabietic acid under amidation conditions.

Abstract: Syndiotactic 1,2-polybutadiene can be blended with various rubbers in order to improve the properties thereof. For instance, syndiotactic 1,2-polybutadiene can be blended with rubbers utilized in making tire treads in order to improve the heat build-up and wear characteristics of tires. The interaction and adhesion between syndiotactic 1,2-polybutadiene and rubbers can be improved by carboxylating the syndiotactic 1,2-polybutadiene. The presence of carboxylic acid groups on the syndiotactic 1,2-polybutadiene also greatly improves interaction with fillers commonly utilized in rubber compounding, such as carbon black. This invention discloses a process whereby syndiotactic 1,2-polybutadiene can be easily and inexpensively carboxylated.

Abstract: There is disclosed a reaction product of a rosin acid and a polyfunctional compound having at least one functional group capable of reacting with a carboxylic acid functionality and another functional group having antidegradant properties.The reaction products of this invention can be used as antidegradants in polymeric compositions and lubricating oil compositions.

Abstract: There is disclosed a process for hydroformylation of carbon black. The carbon black is hydroformylated by reacting carbon black with carbon monoxide and hydrogen under hydroformylation conditions in the presence of a hydroformylation catalyst and organic reaction solvent. Addition of the hydroformylated carbon black enhances the rates of cure of sulfur vulcanizable rubber.

Abstract: There is disclosed a process for enhancing the rate of cure of a sulfur vulcanizable rubber. Addition of a hydroformylated rubber to a sulfur vulcanizable rubber enhances the rate of cure and concomitantly improves the rubber/filler interaction of the vulcanized rubber.

Abstract: Syndiotactic 1,2-polybutadiene can be blended with various rubbers in order to improve the properties thereof. For instance, syndiotactic 1,2-polybutadiene can be blended with rubbers utilized in making tire treads in order to improve the heat build-up and wear characteristics of tires. The interaction and adhesion between syndiotactic 1,2-polybutadiene and rubbers can be improved by carboxylating the syndiotactic 1,2-polybutadiene. The presence of carboxylic acid groups on the syndiotactic 1,2-polybutadiene also greatly improves interaction with fillers commonly utilized in rubber compounding, such as carbon black. This invention discloses a process whereby syndiotactic 1,2-polybutadiene can be easily and inexpensively carboxylated.

Abstract: This invention discloses a process for selectively hydrogenating double bonds in unsaturated polymers, such as polybutadiene. The utilization of the process of this invention results in a rate of vinyl hydrogenation which is slowed relative to the rate of backbone hydrogenation. By utilizing the process of this invention, the rate of hydrogenation of double bonds in the polymers is satisfactory. The process of the subject invention more specifically comprises contacting a polymer containing double bonds in its backbone and vinyl unsaturation with hydrogen in the presence of a polymer containing pendant groups having the structural formula --Rh(P.phi..sub.3).sub.2 X wherein .phi. represents a phenyl group and wherein X represents a halogen atom. Polymers having pendant --P.phi..sub.2 --Rh(P.phi..sub.3).sub.2 X groups are highly preferred catalysts for utilization in the selective hydrogenations of this invention.

Abstract: There is disclosed a reaction product of a rosin acid and a polyfunctional compound having at least one functional group capable of reacting with a carboxylic acid functionality and another functional group having antidegradant properties.The reaction products of this invention can be used as antidegradants in polymeric compositions and lubricating oil compositions.

Abstract: This invention relates to a process for the isomerization of branched dienes which comprises contacting at isomerization conditions a branched diene with a boron phosphate catalyst wherein the initial ratio of phosphorus (P) to boron (B) is less than 1.0 but greater than 0.6. The contacting is conducted at a temperature of from 100.degree. C. to 450.degree. C. and at a pressure from subatmospheric to superatmospheric.

Abstract: This invention is directed to the discovery that the distillative separation of 2-methylbutanal (2MBA) from a mixture containing methylisopropylketone (MIPK) and 2MBA can be greatly enhanced by the addition of water to the mixture.