Argus Chemical Corporation

Adeka Argus Chemical Co., Ltd.

Toshio Ohzeki

Mitsuo Akutsu

Motonobu Minagawa

Takanori Semba

Yutaka Nakahara

Tohru Haruna

Tetsuo Sekiguchi

Junji Kawai

Masahiro Nonoyama

Light and heat stabilizers for synthetic resin compositions and synthetic resin compositions containing such stabilizers are provided, comprising

Synergistic light and heat stabilizer compositions for synthetic resins

Alkylene bis-thioalkanoic acid amide stabilizers are provided, as well as synthetic resin compositions containing the same, having the general formula: ##STR1## wherein: R.sub.1 is alkyl having from one to about fifty carbon atoms,

Alkylene-bis-thioalkanoic acid amide stabilizers for synthetic resins

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.

Clarified olefin polymer composition

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.

Ethylene polymer composition

Processability, color, and mechanical properties upon heating of a rubber modified styrene polymer are improved by incorporating in the polymer a new sulfide compound of four-valent tin having linked to tin through carbon 1 or 2 alkoxycarbonylalkylene groups having 1 to 8 carbon atoms in the alkoxy group and 2 to 3 carbon atoms in the alkylene group.

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Urawa, Japan

Toshio Ohzeki