Abstract: The present invention is directed to an ultraviolet absorber composition which is formed by melt-mixing a compound (A) represented by formula (I): and a resin stabilizer (B) selected from the group consisting of a phenolic antioxidant (b-1), a phosphorus-containing antioxidant (b-2), a hindered amine stabilizer (b-3), and an ultraviolet absorber (b-4) other than the compound (A), at a mass ratio (A)/(B) of 95/5 to 50/50. The composition has excellent compatibility with synthetic resins and provides a stabilized synthetic resin molding.

Abstract: The present invention is directed to an ultraviolet absorber composition which is formed by melt-mixing a compound (A) represented by formula (I): 1

Abstract: A macromolecular material composition which comprises a macromolecular material and a modifier which comprises a polyvinyl cyclohexane compound having hydroindane structure. The modifier improves melt flow characteristics, flexibility at a low temperature, and mechanical characteristics, such as bending modulus and bending strength, of the material, and do not bleed or give bad smell.

Abstract: Stabilizers for enhancing the resistance of synthetic resins to deterioration when exposed to elevated temperatures and/or ultraviolet light comprising from about 0.001 to about 10 parts by weight of a bisphenol phosphite having the formula ##STR1## wherein R.sub.1 is tertiary-butyl or tertiary-amyl, R.sub.2 is alkyl having from one to about nine carbon atoms, R.sub.3 is hydrogen or alkyl having from one to about four carbon atoms, and R.sub.4 is alkyl having from one to about thirty carbon atoms; and from about 0.001 to about 10 parts by weight of a phenol having the formula ##STR2## wherein R.sub.5 is alkyl having from one to about four carbon atoms; and R.sub.6 is hydrogen or alkyl having from one to about four carbon atoms; and stabilized synthetic resin compositions comprising such stabilizers.

Abstract: A polycarbonate resin composition improved in heat resistance by the addition of an organic cyclic phosphite represented by the general formula: ##STR1## wherein R.sub.1 represents an alkyl group having 1 to 9 carbon atoms; R.sub.2 represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms; and R.sub.3 represents an alkyl group having 1 to 30 carbon atoms.

Abstract: A filler-containing polyolefin resin composition comprising a resin composition composed of a polyolefin resin and an inorganic filler exhibits an excellent thermal stability despite the presence of the inorganic filler by adding thereto a particular phenolic antioxidant, an amide or monoglyceride compound of a higher fatty acid and a particular metal inactivating agent.

Abstract: Stabilizers for enhancing the resistance of synthetic resins to deterioration when exposed to elevated temperatures and/or ultraviolet light comprising from about 0.001 to about 10 parts by weight of a bisphenol phosphite having the formula ##STR1## wherein R.sub.1 is tertiary-butyl or tertiary-amyl, R.sub.2 is alkyl having from one to about nine carbon atoms, R.sub.3 is hydrogen or alkyl having from one to about four carbon atoms, and R.sub.4 is alkyl having from one to about thirty carbon atoms; and from about 0.001 to about 10 parts by weight of a phenol having the formula ##STR2## wherein R.sub.5 is alkyl having from one to about four carbon atoms; and stabilized synthetic resin compositions comprising such stabilizers.

Abstract: A synthetic resin composition stabilized particularly against the deterioration caused by the action of heat and light, which comprises 100 parts by weight of a synthetic resin, 0.001 to 10 parts by weight of a cyclic phosphite compound represented by the following general formula (I) and 0.001 to 10 parts by weight of a hindered amine compound having a group represented by the following general formula (II) in its molecule: ##STR1## wherein R.sub.1 stands for a tert-butyl or tert-amyl group; R.sub.2 stands for a C.sub.1.about.9 alkyl group; R.sub.3 stands for a hydrogen atom or a C.sub.1.about.4 alkyl group and R.sub.4 stands for a C.sub.1.about.30 alkyl group.

Abstract: A cyclic phosphonite compound having the following formula (I) is disclosed and useful as a stabilizer for a synthetic resin. ##STR1## in which R1 is an alkyl, phenyl or an alkylphenyl, R2 is hydrogen or an alkyl, R3 is an alkyl, R4 is hydrogen or methyl and R1 and R2 may form an alkylene by linking each other.

Abstract: A polyolefin composition comprises 100 parts by weight of a polyolefine which has been produced with use of a Ziegler catalyst and has a part or residue of the catalyst left therein, 0.005 to 1 part by weight of a phenol compound having the formula (I) and 0.005 to 1 part by weight of an organic phosphite compound having the formula (II). ##STR1## in which R is a residue group of an alcohol being monohydric, dihydric, trihydric or terahydric, R1 is methyl or tert.-butyl, R2 is an alkyl, --CH2CH2COOR3 or --COOR3, R3 being an alkyl, an aryl or an alkylaryl, and n is a number of 1 to 4.

Abstract: Synthetic polymer compositions comprise 100 parts by weight of a synthetic polymer and 0.001 to 5 parts by weight of a benzotriazol compound, and thus possesses improved stability.

Abstract: A synthetic resin composition comprises 100 parts by weight of a synthetic resin, 0.001 to 10 parts by weight of a cyclic alkylphosphite compound of 2,2'-alkylidene-bisphenol (I) and 0.001 to 10 parts by weight of beta-(3,5-dialkyl-4-hydroxyphenyl)-propionic acid ester (II) and is stabilized to light and heat.

Abstract: Cyclic bis and tris phosphites are provided having the formula: ##STR1## wherein: A is selected from the group consisting of sulfur; oxygen; alkylidene having from one to about six carbon atoms; cycloalkylidene having from three to about eight carbon atoms; and phenyl and alkyl phenyl alkylidene having from seven to about fourteen carbon atoms;R is selected from the group consisting of alkyl having from one to about eighteen carbon atoms; cycloalkyl having from three to about eight carbon atoms; and phenalkylidene and alkyl phenalkylidene having from seven to about twelve carbon atoms;R.sub.1 is selected from the group consisting of hydrogen; alkyl having from one to about eighteen carbon atoms; cycloalkyl having from three to about eight carbon atoms; and phenalkylidene and alkyl phenalkylidene having from seven to about twelve carbon atoms;n is 2 or 3;R.sub.2 is ##STR2## wherein: m=0 when n is 2; and 1 when n is 3;R.sub.3, R.sub.4, R.sub.5, R.sub.

Abstract: A process is provided for the preparation of 2,2,6,6-tetramethyl-4-oxopiperidine, reacting acetone with ammonia in the presence of a catalytically effective amount of an organic carboxylic acid halide.

Abstract: A process is provided for the preparation of 2,2,6,6-tetramethyl-4-oxopiperidine, reacting acetone with 2,2,4,4,6-pentamethyl-2,3,4,5,-tetrahydropyrimidine in the presence of a catalytically effective amount of an organic carboxylic acid halide.

Abstract: Mixed light stabilizers for synthetic polymers are provided having the formula ##STR1## wherein: R is a polyvalent group selected from the group consisting of aliphatic hydrocarbon groups having from one to about twenty carbon atoms, cycloaliphatic hydrocarbon groups having from three to about sixteen carbon atoms and aromatic hydrocarbon groups having from six to about thirty carbon atoms; such groups substituted with from one to about six groups selected from the group consisting of hydroxy, acyloxy, and halogen; and N(C.sub.n.sbsb.1 H.sub.2n.sbsb.1).sbsb.3 where n.sub.1 is a number from one to five;R.sub.1 is selected from the group consisting of hydrogen, oxyl, alkyl, epoxy alkyl and hydroxy alkyl having from one to about twelve carbon atoms, alkyl aryl having from six to about eighteen carbon atoms, and acyl having from two to about twelve carbon atoms;R.sub.2 is selected from the group consisting of alkyl and alkenyl having from eight to about thirty carbon atoms;R.sub.

Abstract: Oligomers of 2,2,6,6-tetramethylpiperidinol polycarboxylic acid esters are provided having the formula: ##STR1## wherein: Z is the residue of an aliphatic or aromatic or nitriloaliphatic or hydroxy aliphatic polycarboxylic acid having from three to six carboxylic acid groups and from one to thirty carbon atoms; ##STR2## wherein R.sub.3 is hydrogen, alkyl and hydroxyalkyl having from one to about twenty carbon atoms; cycloalkyl having from six to about twenty carbon atoms; aryl having from six to about twenty carbon atoms; or cycloalkylene with the N in the ring and having from two to five carbon atoms;R is alkylene having from two to about twelve carbon atoms; cycloalkylene having from three to about twelve carbon atoms; phenylene having from six to about twenty carbon atoms; mixed alkylenecycloalkylene or alkylene phenylene or oxyalkylene having from two to about twelve carbon atoms; ##STR3## wherein R.sub.4 is alkyl having from one to about six carbon atoms;R.sub.

Abstract: Hindered bisphenol diphosphonites are provided having the structure: ##STR1## wherein: A is selected from the group consisting of thio sulfur --S--; oxy oxygen --O--; alkylidene having from one to about ten carbon atoms; cycloalkylidene having from about four to about eight carbon atoms; and phenylalkylidene having from seven to about twelve carbon atoms;R is selected from the group consisting of alkyl having from one to about eighteen carbon atoms; cycloalkyl having from three to about twelve carbon atoms; and aralkyl having from seven to about twelve carbon atoms;R.sub.1 is selected from the group consisting of hydrogen; alkyl having from one to about eighteen carbon atoms; cycloalkyl having from three to about twelve carbon atoms; and aralkyl having from seven to about twelve carbon atoms;R.sub.2 is selected from the group consisting of ##STR2## as well as synthetic resin compositions having an enhanced resistance to deterioration by heat and light comprising a synthetic resin and such phosphonites.

Abstract: Alkylthiopropionyl hydrazino triazines are provided having the formula: ##STR1## wherein: R is alkyl having from one to about fifty carbon atoms;X is ##STR2## where R.sub.1 is selected from the group consisting of hydrogen, alkyl having from one to about fifty carbon atoms; and ##STR3## where R.sub.2 is selected from the group consisting of hydrogen, O and alkyl hydroxyalkyl, epoxy alkyl and acyloxy alkyl having from one or two to about eight carbon atoms;when X is O, A is selected from the group consisting of alkylene having from two to about twenty carbon atoms, cycloalkylene having from about five to about eight carbon atoms and phenylene;when X is ##STR4## A is selected from the group consisting of a direct linkage, alkylene having from one to about twenty carbon atoms, cycloalkylene having from five to about eight carbon atoms; phenylene; and ##STR5## where R.sub.

Abstract: Bis-phenol phosphates, are provided, represented by the formula: ##STR1## wherein: R is selected from the group consisting of a carbon-to-carbon bond; thio sulfur --S--; and alkylidene ##STR2## in which R.sub.3 and R.sub.4 are selected from the group consisting of hydrogen, alkyl having from one to about eighteen carbon atoms, and cycloalkyl, including cycloalkylidene in which R.sub.3 and R.sub.4 are taken together as part of a cycloalkylene ring, having from three to about twelve carbon atoms;R.sub.1 and R.sub.2 are each selected from the group consisting of hydrogen, alkyl having from one to about eighteen carbon atoms; and cycloalkyl having from three to about twelve carbon atoms;m is 0 or 1;M is a metal atom which can be monovalent or polyvalent; and n is the valence of the metal atom M, ranging from one to about four;useful to improve clarity of polyolefin resin compositions in an amount within the range from 0.005 to 5 parts by weight per 100 parts of resin.