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.

Abstract: Light and heat stabilizers for synthetic resin compositions and synthetic resin compositions containing such stabilizers are provided, comprising(1) at least one hindered and heterocyclic amine having the formula: ##STR1## wherein: X is a bivalent linking radical forming with the ring structure ##STR2## a nitrogen-containing heterocyclic ring having from five to seven ring atoms, preferably piperidine;R.sub.1 and R.sub.2 are each selected from the group consisting of lower alkyl, preferably methyl, and R.sub.1 and R.sub.2 taken together as pentylene (CH.sub.2).sub.5 ;R.sub.3 and R.sub.4 are each selected from the group consisting of lower alkyl, and R.sub.3 and R.sub.4 taken together as one of butylene--(CH.sub.2).sub.4, pentylene--(CH.sub.2).sub.5, and CH.sub.2 --C(CH.sub.3).sub.2 --NH--C(CH.sub.3).sub.2 --CH.sub.2 --;n is 1 or 2; andwhen n is 1, Y is selected from the group consisting of hydrogen, O.degree.

Abstract: Ortho-substituted phenyl acid phosphite stabilizers for polyphenylene oxide resin compositions have the formula ##STR1## in which R.sub.1 is a t-butyl, t-amyl, cyclohexyl or phenyl group; R.sub.2 is a hydrogen atom, an alkyl group having 1 to 5 carbon atoms, a cyclohexyl group, or a phenyl group; R.sub.3 is a hydrogen atom or a methyl group; and R.sub.4 is a hydrogen atom, an alkyl group having 1 to 20 carbon atoms, an ether-alkyl group having 3 to about 70 carbon atoms and 1 to 30 ether groups, an aryl group having 6 to 18 carbon atoms, a cycloalkyl group having 5 to 14 carbon atoms, an aralkyl, alkaryl, or alkoxyaryl group having 7 to 19 carbon atoms, an ethoxylated aryl or alkaryl group having 8 to 78 carbon atoms and 1 to 30 ether groups, or a cycloalkylaryl group having 11 to 19 carbon atoms.

Abstract: The clarity of molded olefin polymer specimens is augmented by incorporating 0.005 to 5% by weight of the olefin polymer of a phenyl phosphate compound having the formula ##STR1## in which R.sub.1 and R.sub.2 are independently selected from the group consisting of a hydrogen atom, an alkyl group having 1 to 18 carbon atoms, an alkoxy group having 1 to 18 carbon atoms, a cycloalkyl group having 5 to 12 carbon atoms, a phenyl group, a phenoxy group, and a group ##STR2## in which R.sub.5 is a hydrogen atom or an alkyl group having 1 to 18 carbon atoms; R.sub.3 is selected from the group consisting of an alkyl group having 1 to 18 carbon atoms, ##STR3## , and R.sub.4 ; and R.sub.4 is a hydrogen atom or a metal atom equivalent M.sub.1/a where a is the valence of the metal atom M.In the presence of such a phenyl phosphate, further improvements in clarity are obtained by also incorporating certain metal compounds.

Abstract: A propylene polymer composition stabilized against oxidative degradation comprising(1) 100 parts by weight of a propylene polymer,(2) 0.001 to 5 parts by weight of a poly(tertiary-butylated p-vinyl phenol) composed substantially of monomeric units represented by the following formula (I) ##STR1## wherein R.sub.1 represents a hydrogen atom or a tertiary butyl group, and (3) 0.001 to 5 parts by weight of a dialkylthiodipropionate represented by the following formula (II)S--C.sub.2 H.sub.4 COOR).sub.2 (II)wherein R represents an alkyl group containing 10 to 20 carbon atoms.

Abstract: A composition for enhancing and maintaining mechanical properties such as tensile strength of an ethylene polymer on heating at elevated temperature comprises (A) an initiator of cross-linking having a half-life measured at 110.degree. C. of 0.1 to 50 hours and (B) an alkylthioalkylenecarboxylic acid ester of a polycarbocyclic polyhydric phenol.

Abstract: A stabilized synthetic polymer composition comprising(1) 100 parts by weight of a synthetic polymer,(2) 0.001 to 5 parts by weight of a poly(alkylated alkenylphenol) composed substantially of monomeric units represented by the following formula (I) ##STR1## wherein R represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms; R.sub.1 represents an alkyl group having 1 to 18 carbon atoms; and R.sub.2 represents a hydrogen atom or an alkyl group having 1 to 18 carbon atoms; and(3) 0.001 to 5 parts by weight of an auxiliary stabilizer selected from the group consisting of polyhydric alcohol esters of alkylthioalkanoic acids, polyesters of thiodipropionic acid and organic phosphite compounds.

Abstract: 3-SALICYLAMIDO AND 3-BENZOSALICYLAMIDO-1,2,4-TRIAZOLES ARE PROVIDED WHICH ARE USEFUL IN THE ENHANCEMENT OF THE RESISTANCES OF OLEFIN POLYMERS TO HEAVY METAL-CATALYZED OXIDATIVE DETERIORATION.Stabilizer compositions consisting essentially of at least one olefin polymer stabilizer and such amidotriazoles; olefin polymer compositions, such as propylene polymer compositions, containing such amidotriazoles and a process for enhancing the resistance of olefin polymers to copper-catalyzed degradation by incorporation of such amidotriazoles or such stabilizer compositions are also provided.