Polyphenylene ether compositions

A resin composition which consists essentially of 20 to 80 wt. % of polyphenylene ether, consisting of a constituent unit (I) or constituent units (I) and (II) which are recurring units expressed by the general formulae:

• ##STR6## (wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, and R.sub.6 are the same or different univalent residues selected from the group consisting of alkyl radicals containing one to four carbons, excluding tertiary butyl radical, aryl radical, halogen and hydrogen, provided R.sub.5 and R.sub.6 should not by hydrogen at the same time), and 80 to 20 wt. % of rubber reinforced high impact polystyrene, wherein the polyphenylene ether employed has the intrinsic viscosity (.eta.) (30.degree. C., chloroform solution) in the range of 0.50 to 0.80 and the eluting amount equivalent to polystyrene molecular weight of 10,000 or less by gel permeation chromatography of not more than 8 wt. %.

A resin composition consisting essentially of 20 to 80 wt. % of poly (2,6-dimethyl-1,4-phenylene) ether and 80 to 20 wt. % rubber reinforced high impact polystyrene, wherein the poly(2,6-dimethyl-1,4-phenylene) ether consists of having an intrinsic viscosity (.eta.) (30.degree. C., chloroform solution) in the range of 0.50 to 0.80, the gel permeation chromatography eluting amount equivalent to polystyrene molecular weight of 3000 or less of not more than 5 wt. % and the isolating amount (after letting stand at 23.degree. C. for 5 hours) from a dichloromethane solution containing 5 wt. % of the poly(2,6-dimethyl-1,4-phenylene) ether, of not less than 70%.

A resin composition consisting essentially of 20 to 80 wt. % of poly (2,6-dimethyl-1,4-phenylene) ether and 80 to 20 wt. % rubber reinforced high impact polystyrene, wherein the poly(2,6-dimethyl-1,4-phenylene) ether consists of having an intrinsic viscosity (.eta.) (30.degree. C., chloroform solution) in the range of 0.50 to 0.80, the gel permeation chromatography eluting amount equivalent to polystyrene molecular weight of 10,000 or less of not more than 8 wt. %, and the isolating amount (after letting stand at 23.degree. C. for 5 hours) from a dichloromethane solution containing 5 wt. % of the poly(2,6-dimethyl-1,4-phenylene) ether of not less than 70%.

A resin composition which consist essentially of 20 to 80 wt. % of polyphenylene ether, consisting of a constituent unit (I) or constituent units (I) and (II) which are are recurring units expressed by the general formulae:

• ##STR7## (wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5 and R.sub.6 are the same of different univalent residues selected from the group consisting of alkyl radical containing one to four carbons, excluding tertiary butyl radical, aryl radical, halogen and hydrogen, provided R.sub.5 and R.sub.6 should not be hydrogen at the same time), and 80 to 20 wt. % of rubber reinforced high impact polystyrene, wherein the polyphenylene ether employed has the intrinsic viscosity (.eta.) (30.degree. C., chloroform solution) in the range of 0.50 to 0.80 and the eluting amount equivalent to polystyrene molecular weight of 3000 or less by gel permeation chromatography of not more than 5 wt. %;
• and the rubber reinforced high impact polystyrene employed has the volume-average particle size (Rv) in elastomer phase, of 1.0 to 3.5 microns and the ratio of Rv to Rn (number-average particle size in the elastomer phase) (Rv/Rn), of not less than 3.0.

A resin composition consisting essentially of 20 to 80 wt. % of poly(2,6-dimethyl-1,4-phenylene) ether and 80 to 20 wt. % of rubber reinforced high impact polystyrene, wherein the poly(2,6-dimethyl-1,4-phenylene) ether consists of an intrinsic viscosity (.eta.) (30.degree. C., chloroform solution) in the range of 0.50 to 0.80, the gel permeation chromatography eluting amount equivalent to polystyrene molecular weight of 3000 or less of not more than 5%, and the isolating amount (after letting stand at 23.degree. C. for 5 hours) from a dichloromethane solution containing 5 wt. % of the poly(2,6-dimethyl-1,4-phenylene) ether, of not less than 70 wt. %:

• and the rubber reinforced high impact polystyrene has the volume-average particle size (Rv) in the elastomer phase, of 1.0 to 3.5 microns and the ratio of Rv to Rn (number-average particle size in the elastomer phase (Rv/Rn) is not less than 3.0.

A resin composition which consists essentially of 20 to 80 wt. % of polyphenylene ether, consisting of a constituent unit (I) or constituent units (I) and (II) which are recurring units expressed by the general formulae:

• ##STR8## (wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5 and R.sub.6 are the same or different univalent residues selected from the group consisting of alkyl radical containing one to four carbons, excluding tertiary butyl radical, aryl radical, halogen and hydrogen, provided R.sub.5 and R.sub.6 should not be hydrogen at the same time) and 80 to 20 wt. % of rubber reinforced high impact polystyrene together with a vinyl aromatic compound resin, wherein the polyphenylene either employed has the intrinsic viscosity (.eta.) (30.degree. C., chloroform solution) in the range of 0.50 to 0.80 and the eluting amount equivalent to polystyrene molecular weight of 3000 or less by gel permeation chromatography of not more than 5 wt. %.

A resin composition which consists essentially of 20 to 80 wt. % of polyphenylene ether, consisting of a constituent unit (I) or constituent units (I) and (II) which are recurring units expressed by the general formulae:

• ##STR9## (wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5 and R.sub.6 are the same or different univalent residues selected from the group consisting of alkyl radical containing one to four carbons, excluding tertiary butyl radical, aryl radical, halogen and hydrogen, provided R.sub.5 and R.sub.6 should not be hydrogen at the same time) and 80 to 20 wt. % of rubber reinforced high impact polystyrene together with a vinyl aromatic compound resin, wherein the polyphenylene ether employed has the intrinsic viscosity (.eta.) (30.degree. C., chloroform solution) in the range of 0.50 to 0.80 and the eluting amount equivalent to polystyrene molecular weight of 10,000 or less by gel permeation chromatography of not more than 8 wt. %.

A resin composition consisting essentially of 20 to 80 wt. % of poly(2,6-dimethyl-1,4-phenylene) ether and 80 to 20 wt. % of rubber reinforced high impact polystyrene, together with a vinyl aromatic compound resin, which comprises that the poly(2,6-dimethyl-1,4-phenylene) ether consists of an intrinsic viscosity (.eta.) (30.degree. C., chloroform solution) in the range of 0.50 to 0.80, the gel permeation chromatography eluting amount equivalent polystyrene molecular weight of 3000 or less of not more than 5 wt. %, and the isolating amount (after letting stand at 23.degree. C. for 5 hours) from a dichloromethane solution containing 5 wt. % of the poly(2,6-dimethyl-1,4-phenylene) ether, of not less than 70 wt. %.

A resin composition consist essentially of 20 to 80 wt. % of poly(2,6-dimethyl-1,4-phenylene) ether and 80 to 20 wt. % of rubber reinforced high impact polystyrene, together with a vinyl aromatic compound resin, wherein the poly(2,6-dimethyl-1,4-phenylene) ether consist of having an intrinsic viscosity (.eta.) (30.degree. C., chloroform solution) in the range of 0.50 to 0.80, the gel permeation chromatography eluting amount equivalent polystyrene molecular weight of 10,000 or less, of not more than 8 wt. %, and the isolating amount (after letting stand at 23.degree. C. for 5 hours) from a dichloromethane solution containing 5 wt. % of not less than 70 wt. %.

A resin composition which consists essentially of 20 to 80 wt. % of polypheylene ether, consisting of a constituent unit (I) or constituent units (I) and (II) which are recurring units expressed by the general formulae:

• ##STR12## (wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5 and R.sub.6 are the same or different univalent residues selected from the group consisting of alkyl radical containing one to four carbons, excluding tertiary butyl radical, aryl radicals, halogen and hydrogen, provided R.sub.5 and R.sub.6 should not be hydrogen at the same time), and 80 to 20 wt. % of rubber reinforced high impact polystyrene, wherein the polyphenylene ether employed has the intrinsic viscosity (.eta.) (30.degree. C., chloroform solution) in the range 0.50 to 0.80 and the eluting amount equivalent to polystyrene molecular weight of 10,000 or less by gel permeation chromatography of not more than 8 wt. %;
• and the rubber reinforced high impact polystyrene employed has the volume-average particle size (Rv) in elastomer phase, of 1.0 to 3.5 microns and the ratio of Rv to Rn (number-average particle size in the elastomer phase) (Rv/Rn), of not less than 3.0.

A resin composition consisting essentially of 20 to 80 wt. % of poly(2,6-dimethyl-1,4-phenylene) ether and 80 to 20 wt. % of rubber reinforced high impact polystyrene, wherein the poly(2,6-dimethyl-1,4-phenylene) ether consist of having an intrinsic viscosity (.eta.) (30.degree. C., chloroform solution) in the range of 0.50 to 0.80, the gel permeation chromatography eluting amount equivalent to polystyrene molecular weight of 10,000 or less of not more than 8%, and the isolating amount (after letting stand at 23.degree. C. for 5 hours) from a dichloromethane solution containing 5 wt. % of the poly(2,6-dimethyl-1,4-phenylene) ether, of not less than 70 wt. %, and the rubber reinforced high impact polystyrene has the volumn-average particle size (Rv) in the elastomer phase, of 1.0 to 3.5 microns and the ratio of Rv to Rn (number-average particle size in the elastomer phase (Rv/Rn) is not less than 3.0.