The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 20, 1994
Filed:
Jul. 01, 1993
Hajime Serizawa, Shizuoka, JP;
Masaru Kubota, Shizuoka, JP;
Hiroyuki Sano, Shizuoka, JP;
Yoshihisa Tajima, Shizuoka, JP;
Polyplastics Co., Ltd., Osaka, JP;
Takeda Chemical Industries, Ltd., Osaka, JP;
Abstract
Lightweight polyester resin molding compositions include a melt-blend of (A) between 97 to 20 parts by weight, based on 100 parts by weight of the total composition weight, of a polyester base resin, (B) between 3 to 80 parts by weight, based on 100 parts by weight of the total composition weight, of a polyolefin resin, (C) between 0.1 to 15 parts by weight, based on 100 parts by weight of the total composition weight, of a compatibilizing compound having a carbon-carbon double bond and an epoxy group in its molecule, (D) between 0.1 to 20% by weight, based on the weight of the compatibilizing compound, of a free radical initiator, and optionally, (E) up to 120 parts by weight, based on 100 parts by weight of the total composition, of a filler material. The free radical initiator is at least one compound having a one-minute half-life temperature of 130.degree. C. or greater, and is preferably pre-blended in solution form with the compatibilizing compound prior to being added to a melt of the polyester base resin and polyolefin resin. The resulting compositions may be molded to form relatively lightweight articles having minimal (if any) propensity to surface peel.