Polyphenylene ether resin composition
AssigneeMitsubishi Gas Chemical Company, Inc.
InventorsAkitoshi Sugio, Masanobu Masu, Masao Okabe, Kozo Ishiyama
Life of this patent
Estimating the term…
Abstract
A polyphenylene ether resin composition having improved heat stability, said composition comprising a polyphenylene ether resin matrix, and dispersed therein, a phosphonic acid or its derivative of the formula ##STR1## wherein R.sub.1 represents an unsubstituted or substituted phenyl or naphthyl group, or a linear or branched alkyl group with 1 to 18 carbon atoms, or a group of the following formula (a) ##STR2## R.sub.2 and R.sub.3 are identical or different and each represents hydrogen atom, a metal, an unsubstituted or substituted phenyl group, or an alkyl group with 1 to 10 carbon atoms; and R.sub.4 is a divalent hydrocarbon group with 2 to 10 carbon atoms.
Claims16
A polyphenylene ether resin composition having improved heat stability, said composition consisting essentially of a polyphenylene ether resin matrix, and dispersed therein, a phosphonic acid or its derivative of the formula ##STR11## wherein R.sub.1 represents an unsubstituted phenyl or naphthyl group or a phenyl or naphthyl group substituted with 1 to 3 alkyl groups, or a linear or branched alkyl group with 1 to 18 carbon atoms, or a group of the following formula (a) ##STR12## R.sub.2 and R.sub.3 are identical or different and each represents hydrogen atom, an alkali or alkaline earth metal, an unsubstituted phenyl group or phenyl group substituted with 1 to 3 alkyl groups, or an alkyl group with 1 to 10 carbon atoms;
- and R.sub.4 is a divalent hydrocarbon group with 2 to 10 carbon atoms.
A polyphenylene ether resin composition having improved heat stability, said composition consisting essentially of a polyphenylene ether resin matrix, and dispersed therein, a phosphonic acid or its derivative of the formula ##STR15## wherein R.sup.1 represents an unsubstituted phenyl or naphthyl group
- or a phenyl or naphthyl group substituted with 1 to 3 alkyl groups, or a linear or branched alkyl group with 1 to 18 carbon atoms, or a group of the following formula (a) ##STR16## R.sub.2 and R.sub.3 are identical or different and each represents hydrogen atom, an alkali or alkaline earth metal, an unsubstituted phenyl group or phenyl group substituted with 1 to 3 alkyl groups, or an alkyl group with 1 to 10 carbon atoms;
- and R.sub.4 is a divalent hydrocarbon group with 2 to 10 carbon atoms, and at least one sterically hindered phenol.
A polyphenylene ether resin composition having improved heat stability, said composition consisting essentially of a polyphenylene ether resin matrix, and dispersed therein, a phosphonic acid or its derivative of the formula ##STR17## wherein R.sub.1 represents an unsubstituted phenyl or naphthyl group or a phenyl or naphthyl group substituted with 1 to 3 alkyl groups, or a linear or branched alkyl group with 1 to 18 carbon atoms, or a group of the following formula (a) ##STR18## R.sub.2 and R.sub.3 are identical or different and each represents hydrogen atom, an alkali or alkaline earth metal, an unsubstituted phenyl group or phenyl group substituted with 1 to 3 alkyl groups, or an alkyl group with 1 to 10 carbon atoms;
- and R.sub.4 is a divalent hydrocarbon group with 2 to 10 carbon atoms,
- at least one sterically hindered phenol, and
- at least one organic phosphite compound selected from the group consisting of organic monophosphites and organic polyphosphites.
Dependencies are inferred from the claim text.