Abstract: Polyaminotriazines represented by formula (I) can be prepared by conducting a reduction alkylamination of a tetramethylpiperidone with a diamine represented by formula (IIb), NH2—R—NH2, in the presence of a hydrogenating catalyst, removing the catalyst upon completion of the reaction to obtain an unrefined crude product (A); and, conducting a polycondensation reaction of the unrefined crude product (A) and a dichlorotriazine in an aromatic solvent and in the presence of an inorganic base.

Abstract: There is provided a co-condensation product obtainable by subjecting a p-alkylphenol to reaction with formaldehyde in the presence of an alkali catalyst to prepare a resol type condensate, and subjecting the resulting resol type condensate to reaction with a m-substituted phenol such as resorcin in the presence of an acid catalyst, wherein the content of the m-substituted phenol is not higher than 4% by weight, and the content of a component having a molecular weight not higher than 1,000 excluding both the p-alkylphenol and the m-substituted phenolis at least 25% by weight based on the total weight of the co-condensation product. This co-condensation product is low in fuming and in hygroscopic properties, exhibits excellent adhesiveness in vulcanizing adhesion between rubber and a reinforcing material, and further provides a vulcanized rubber article of high hardness.

Abstract: A hindered piperidine compound represented by the formula of ##STR1## wherein R.sup.1 is a 2,2,6,6-tetramethyl-4-piperidyl group of which the N-position is substituted or not, a hydrogen atom, a C.sub.1 -C.sub.18 arylalkyl group which may contain a cyclic portion, or a C.sub.7 -C.sub.18 arylalkyl group, R.sup.2 is a hydrogen atom, a C.sub.1 -C.sub.10 alkyl group which may contain a cyclic portion, a C.sub.1 -C.sub.18 alkyloxy group which may contain a cyclic portion, or a hydroxyl group, and n is an integer of 2 to 8, effectively stabilizes organic materials having a property to deteriorate by the action of light. A method for producing the compound represented by the above formula is also disclosed.

Abstract: Described herein is a process for preparing a hydroxyflavan compound which comprises reacting a polyhydric phenol compound represented by formula(2): ##STR1## wherein at least one of W, X, Y and Z is hydroxy; with a ketone in the presence of (i)an acid catalyst and (ii)water and/or a seed crystal, using an organic solvent which is insoluble in water, procuces the hydroxyflavan compounds in high yield and with high selectivity while maintaining high conversion of the polyhydric phenol.

Abstract: An organic phosphorus compound represented by the following formula (I): ##STR1## wherein R.sup.1 and R.sup.2 independently represent alkyl having 1-8 carbon atoms, cycloalkyl having 5-8 carbon atoms, alkylcycloalkyl having 6-12 carbon atoms, arylalkyl having 7-12 carbon atoms or phenyl; R.sup.3 represents hydrogen or alkyl having 1-8 carbon atoms, X represents a direct bond or --CH(R.sup.4)-- wherein R.sup.4 represents hydrogen or alkyl having 1-8 carbon atoms; a phosphorus type stabilizer for various organic materials such as synthetic resins or synthetic rubbers or an organic material composition comprising the same.

Abstract: A hindered piperidine compound represented by the formula of ##STR1## wherein R.sup.1 is a 2,2,6,6-tetramethyl-4-piperidyl group of which the N-position is substituted or not, a hydrogen atom, a C.sub.1 -C.sub.18 alkyl group which may contain a cyclic portion, or a C.sub.7 -C.sub.18 arylalkyl group, R.sup.2 is a hydrogen atom, a C.sub.1 -C.sub.10 alkyl group which may contain a cyclic portion, a C.sub.1 -C.sub.18 alkyloxy group which may contain a cyclic portion, or a hydroxyl group, and n is an integer of 2 to 8, effectively stabilizes organic materials having a property to deteriorate by the action of light. A method for producing the compound represented by the above formula is also disclosed.

Abstract: A hindered piperidine compound represented by the formula of ##STR1## wherein R.sup.1 is a 2,2,6,6-tetramethyl-4-piperidyl group of which the N-position is substituted or not, a hydrogen atom, a C.sub.1 -C.sub.18 alkyl group which may contain a cyclic portion, or a C.sub.7 -C.sub.18 arylalkyl group, R.sup.2 is a hydrogen atom, a C.sub.1 -C.sub.10 alkyl group which may contain a cyclic portion, a C.sub.1 -C.sub.18 alkyloxy group which may contain a cyclic portion, or a hydroxyl group, and n is an integer of 2 to 8, effectively stabilizes organic materials having a property to deteriorate by the action of light. A method for producing the compound represented by the above formula is also disclosed.

Abstract: A rubber composition comprising the following components:(A) a rubber component comprising at least 50% by weight of a styrene/butadiene copolymer rubber;(B) an azodicarboxylic ester compound represented by the formula ##STR1## wherein X is an alkyl of 3 to 8 carbon atoms, an unsubstituted or substituted phenyl, or an unsubstituted or substituted benzyl;(C) carbon black having a nitrogen absorption specific surface area of 100 to 250 m.sup.2 /g and a dibutyl phthalate absorption number of 110 to 170 ml/100 g;(D) sulfur; and(E) a benzothiazole vulcanization accelerator.This rubber composition shows a high loss factor (tan .delta.) in a low temperature range, and a low loss factor in a high temperature range which when applied to the production of automobile tires, achieves improved braking power on wet, snow covered or frozen road surfaces. Lowered rolling resistance during driving without loss in the strength characteristics of the composition are also exhibited.

Abstract: A hydroxyphenylpropionic ester represented by the formula of ##STR1## which has a crystal structure showing a sharp X-ray diffraction peak at a diffraction angle 2.theta.=7.9.degree. by X-ray diffraction measurement using an X-ray of a Cu-K.sub..alpha. wavelength. This novel crystal exhibits largely advantageous effects in industrial production and usage of the ester because of its high purity, high quality, excellent filterability owing to the large crystal growth, and excellent fluidity owing to the large bulk specific gravity.

Abstract: Crude N,N'-bis(2,2,6,6-tetramethyl-4-piperidyl)alkanediamine represented by the formula: ##STR1## wherein n is an integer of 2 to 10, is purified by crystallization from a ketone solvent of 3 to 9 carbon atoms. The purified product thus obtained has a purity of 98% by weight or more, a 2,2,6,6-tetramethyl-4-piperidone content of 150 ppm or less, and an initial APHA value of 30 or less. The purified product is also inhibited from discoloration with the passage of time.

Abstract: A process for producing granules of a 2,2,6,6-tetramethylpiperidine-containing light stabilizer, which comprises mixing a 2,2,6,6-tetramethylpiperidine-containing light stabilizer having a melting point of not less than 60.degree. C. with a lubricant selected from the group consisting of water and an aqueous solution of an alcohol having 1 to 4 carbon atoms, and granulating the resultant mixture while pressure is applied thereto. The granular light stabilizer product has low dusting property and excellent free-flowing property.

Abstract: A bisphenol monoester represented by the formula (I): ##STR1## wherein R.sup.1 is hydrogen or alkyl, R.sup.2 and R.sup.3 are each alkyl, and R.sup.4 is alkyl, alkenyl or phenyl, is produced by continuous two step reactions in which an aldehyde R.sup.1 -CHO and 2,4-dialkylphenol are subjected to a condensation reaction in a C.sub.6 -C.sub.10 aliphatic or C.sub.6 -C.sub.12 aromatic hydrocarbon solvent, and then a resulting bisphenol compound dissolved in the solvent is subjected to an esterification with a carboxylic acid R.sup.4 --COOH or its derivative. Prior to the esterification, the organic layer containing the bisphenol compound is subjected to a dehydration treatment, thereby enabling the two steps to proceed continuously without isolating the intermediate bisphenol compound. A purification process for the bisphenol monoester of the formula (I) is also disclosed in which the monoester is purified from a mixed solvent comprising a C.sub.6 -C.sub.12 aromatic hydrocarbon solvent and a C.sub.1 -C.sub.

Abstract: A rubber composition comprising a rubber, a filler and a diamide compound represented by the formula: ##STR1## wherein X is hydrogen, alkyl of 1 to 18 carbon atoms, alkoxy of 1 to 18 carbon atoms, alkanoyl of 2 to 19 total carbon atoms, amino, nitro, cyano, hydroxy, carboxy or halogen, and n is an integer of 2 to 12. This rubber composition is increased in its loss factor and is useful for tires and rubber vibration isolators. For example, the resulting tires prepared from the rubber composition are improved in their gripping performance.

Abstract: A compound represented by the formula of: ##STR1## wherein R is hydrogen or methyl. This compound is useful as a stabilizer for butadiene polymers.

Abstract: A butadiene polymer composition containing a phenolic compound represented by the formula: ##STR1## wherein R.sub.1 is an alkyl having 1 to 4 carbon atoms;R.sub.2 and R.sub.3 are each independently a group represented by --C(CH.sub.3).sub.2 --R' in which R' is an alkyl having 1 to 5 carbon atoms or phenyl, andR.sub.4 is hydrogen or methyl,and a sulfur-containing compound represented by the formula:(R.sub.5 --S--CH.sub.2 CH.sub.2 COOCH.sub.2).sub.4 Cwherein R.sub.5 is an alkyl having 4 to 20 carbon atoms. The composition is stable against the thermal deterioation and discoloration in the absence of oxygen as well as against the thermal and oxidative deterioration in the presence of oxygen.

Abstract: A butadiene polymer composition containing a phenolic compound represented by the formula: ##STR1## wherein R.sub.1 is an alkyl having 1 to 4 carbon atoms, R.sub.2 and R.sub.3 are each independently a group represented by --C(CH.sub.3).sub.2 --R' in which R' is an alkyl having 1 to 5 carbon atoms or phenyl, and R.sub.4 is hydrogen or methyl, and a phosphorus-containing compound represented by the formula: ##STR2## wherein R.sub.5 and R.sub.6 are each independently an alkyl having 1 to 9 carbon atoms.The composition is stable against the thermal deterioration and discoloration in the absence of oxygen as well as against the exposure to oxides of nitrogen gas.

Abstract: The invention relates to a stabilized polyolefin composition, which composition is stabilized against deterioration caused by contact with heavy metals and improved in coloration properties. This is achieved by blending a polyolefin with:(A) a phenolic compound represented by the formula (I), ##STR1## wherein R.sub.1 represents a C.sub.1 -C.sub.3 alkyl group, (B) a metal deactivator having one or more ##STR2## groups in the side chain, and (C) a sulfur-containing compound represented by the formula (II-1), (II-2), (II-3) or (II-4): ##STR3## wherein R.sub.2 represents a C.sub.4 -C.sub.20 alkyl group, ##STR4## wherein R.sub.3 represents a C.sub.4 -C.sub.20 alkyl group, ##STR5## wherein R.sub.4 represents a C.sub.3 -C.sub.18 alkyl group, and R.sub.5 and R.sub.6 independently represent a hydrogen atom or a C.sub.1 -C.sub.6 alkyl group, ##STR6## wherein R.sub.7 represents a C.sub.3 -C.sub.18 alkyl group.

Abstract: A compound represented by the formula of ##STR1## wherein R.sub.1 represents an alkyl having 1 to 5 carbon atoms;R.sub.2 represents an alkyl having 1 to 18 carbon atoms, an alkenyl having 2 to 5 carbon atoms, an aralkyl having 7 to 9 carbon atoms, phenyl, an aliphatic acyl having 2 to 5 carbon atoms, or benzoyl;R.sub.3 represents hydrogen or an alkyl having 1 to 11 carbon atoms; andR.sub.4 represents hydrogen or methyl.The compound is useful as a stabilizer for synthetic resins such as butadiene polymers. The butadiene polymer containing the compound is stable against thermal deterioration in the absence of oxygen, as well as against thermal oxidative deeterioration and thermal oxidative discoloration.

Abstract: 3,9-bis{2-[3-(3-tert-butyl-4-hydroxy-5-methylphenyl) propionyloxy]-1,1-dimethylethyl}-2,4,8,10-tetraoxaspiro[5.5] undecane having a novel crystalline structure which, when subjected to Cu-K.sub..alpha. X-ray diffraction, shows sharp X-ray diffraction peaks at angles of diffraction, 2.theta.=4.2.degree. and 2.theta.=10.6.degree.. Also provided is a method for producing this compound, using a certain recrystallization solvent.

Abstract: The invention relates to a stabilized polyolefin composition, which composition is stabilized against deterioration caused by contact with heavy metals and improved in coloration properties. This is achieved by blending a polyolefin with:(A) a phenolic compound represented by the formula (I), ##STR1## wherein R.sub.1 represents a C.sub.1 -C.sub.3 alkyl group, (B) a metal deactivator having one or more ##STR2## groups in the side chain, and (C) a sulfur-containing compound represented by the formula (II-1), (II-2), (II-3) or (II-4): ##STR3## wherein R.sub.2 represents a C.sub.4 -C.sub.20 alkyl group, ##STR4## wherein R.sub.3 represents a C.sub.4 -C.sub.20 alkyl group, ##STR5## wherein R.sub.4 represents a C.sub.3 -C.sub.18 alkyl group, and R.sub.5 and R.sub.6 independently represent a hydrogen atom or a C.sub.1 -C.sub.6 alkyl group, ##STR6## wherein R.sub.7 represents a C.sub.3 -C.sub.18 alkyl group.