Sumitomo Chemical Company, Limited

Ube Industries, Inc.

Kanako Fukuda

Naoki Inui

Taketoshi Kikuchi

Takashi Sanada

Tetsuo Yamaguchi

Mutsuko Higo

Kunihito Miyake

Kenji Kimura

Shinya Tanaka

Manji Sasaki

Hironobu Iyama

Yutaka Yamaguchi

Michiaki Yoshidomi

There is a provided a polyurethane composition, which exhibits an excellent property of preventing discoloring or coloring not only by oxidized nitrogen gases but also by heat, characterized in that

Polyurethane composition

Polybutadiene composition

Polymer composition

A pentavalent phosphorous compound represented by the formula (I):

Pentavalent phosphorus compound, production and use thereof

A phosphite represented by the formula (I): ##STR1## wherein n repesents 1 or 2; A represents alkylene; B represents a direct bond or alkylene; one of Y and Z represents a hydroxyl group, alkoxy or aralkyloxy, and the other one represents a hydrogen atom or alkyl; X represents a group of formula (II): ##STR2## wherein R.sup.1 and R.sup.2 represent a hydrogen atom, an alkyl group, a cycloalkyl group, an alkylcycloalkyl group, an aralkyl group or a phenyl group; R.sup.3 represents a hydrogen atom or an alkyl group; and R.sup.4 represents a hydrogen atom, an alkyl group, a cycloalkyl group, an alkylcycloalkyl group, an aralkyl group or a phenyl group, or R.sup.4 may be combined to form a direct bond, a sulfur bond (--S--), or an unsubstituted or substituted methylene group; R.sup.5 and R.sup.6 independently represent a hydrogen atom, an alkyl group, a cycloalkyl group, an alkylcycloalkyl group, an aralkyl group or a phenyl group; R.sup.8 represents a hydrogen atom or an alkyl group; and R.sup.7 represents a hydrogen atom or an alkyl group or --CH(R8)--A--O--X; and the organic phosphorus compound is useful as a stabilizer for an organic material.

Phosphite, a process for producing the same and a use thereof

Phosphonites which are useful as a deterioration inhibitor for organic material and are represented by the following formula: ##STR1## wherein X represents a connecting group, and R.sup.A represents a phenyl group which may be optionally substituted; and a process for producing the same are provided.

Cyclic phosphonites and their use as stabilizers for organic materials

A five-coordinate phosphorous compound which is useful as an stabilizer for organic materials and represented by the formula (I): ##STR1## wherein R.sup.1, R.sup.2, R.sup.4 and R.sup.5 independently represent hydrogen atom, an alkyl group, a cycloalkyl group, an alkylcycloalkyl group, an aralkyl group or a phenyl group; R.sup.3 represents hydrogen atom or an alkyl group; X represents a direct bond, a sulfur atom or a group represented by --CHR.sup.6 -- wherein R.sup.6 represents hydrogen atom, an alkyl group or a cycloalkyl group, and a process for producing the compound (I) are provided.

Five-coordinate phosphorous compound, process for producing the same and

Phosphites inhibitors for organic material represented by the formula: ##STR1## wherein R.sup.1, R.sup.2, R.sup.4 and R.sup.5 independently represent hydrogen atom, an alkyl group, a cycloalkyl group, an alkylcycloalkyl group, an aralkyl group or a phenyl group; R.sup.3 is hydrogen atom or alkyl; X is a direct bond, sulfur atom, or methylene group which may optionally be substituted with alkyl or cycloalkyl; A represents a dihydric alcohol residue; B is a direct bond or alkylene; and one of Y and Z represents an alkoxy group or an aralkyloxy group, and the other one represents hydrogen atom or an alkyl group; and a process for producing the same are provided.

Phosphites, process for producing them and their use

A phosphite stabilizer for organic material is represented by the formula (1): ##STR1## wherein R.sup.1, R.sup.2, R.sup.4 and R.sup.5 is hydrogen, alkyl, cycloalkyl, alkyl, cycloalkyl, aralkyl or phenyl; R is hydrogen or alkyl; X is a direct bond, sulfur atom or a --CHR.sup.6 group in which R.sup.6 represents hydrogen, alkyl or cycloalkyl; A is an alkylene group having 2 to 8 carbon atoms or *--COR.sup.7 -- in which R.sup.7 is a direct bond or alkyl group, and * represents the bond to the oxygen atom of the phenoxy radical; and one of Y and Z represents a hydroxyl group, an alkoxy group or an aralkoxy group and the other one represents atom or an alkyl group.

Phosphites, process for producing the same and their use

Phosphites which are useful as a deterioration inhibitor for organic material and are represented by the following formula: ##STR1## wherein R.sup.1, R.sup.2, R.sup.5 and R.sup.6 represent a hydrogen atom, an alkyl group, a cycloalkyl group, an alkylcycloalkyl group, an aralkyl group or a phenyl group;

Phosphites represented by the general formula (I): ##STR1## wherein R.sup.1, R.sup.2, R.sup.4 and R.sup.5 independently represent a hydrogen atom, an alkyl group having 1 to 8 carbon atoms, a cycloalkyl group having 5 to 8 carbon atoms, an alkylcycloalkyl group having 6 to 12 carbon atoms, an aralkyl group having 7 to 12 carbon atoms or a phenyl group; R.sup.3 and R.sup.6 independently represent a hydrogen atom or an alkyl group having 1 to 8 carbon atoms; X.sub.1 is a dihydric alcohol residue, wherein HO--X.sub.1 --OH defines the corresponding dihydric alcohol from which residue X.sub.1, is obtained; and X.sub.2 is a direct bond or an alkylene group having 1 to 8 carbon atoms; and the phosphites are useful as stabilizers for organic materials.

Phosphites and their production and use

Phosphites which are a deterioration inhibitors for organic material represented by the formula: ##STR1## wherein R.sup.1 and R.sup.2 independently represent a hydrogen atom, or certain hydrocarbyl radicals; X represents a direct bond, a sulfur atom or a methylene group which may optionally be substituted; Z is --A.sup.1 --CO--O--Y.sup.1 or --A.sup.2 --O--CO--Y.sup.2 wherein A.sup.1 is a direct bond or an alkylene group; Y.sup.1 is aralkyl or aryl; A.sup.2 is a residue of a dihydric alcohol; and Y.sup.2 is alkyl, aralkyl or a phenyl group, and a process for producing the same are provided.

A resin composition including (A) a mixture of one or more polyamide resins and one or more ethylene/vinyl alcohol copolymers; (B) 2,2'-methylenebis(4-methyl-6-tert-butylphenol); and (C) at least one polyalkyleneglycol is provided. The resin composition exhibits improved flowability during processing and remarkably decreased possibility of fish eye gel formation, thereby allowing for the production of formed products having a good external appearance.

Resin composition with improved flowability and reduced gel formation

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.

Growing community of inventors

Osaka, Japan

Kanako Fukuda