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:
May. 15, 1979
Filed:
Aug. 26, 1977
Fusaji Shoji, Mito, JP;
Susumu Era, Hitachi, JP;
Hisashi Kogame, Hitachi, JP;
Tatsuo Ito, Ichihara, JP;
Koichi Kakefuda, Ichihara, JP;
Kiyoyuki Suzue, Chiba, JP;
Abstract
High impact and weather resistant graft copolymers are produced by a two-stage process comprising (I) carrying out bulk or suspension polymerization of a mixture obtained by impregnating a substantially non-polar rubber-like polymer having iodine value of 2 to 40 with a mixture of an aromatic vinyl compound and a polar vinyl compound in the presence of a polymerization initiator to yield a graft copolymer, and (II) subjecting a mixture obtained by dispersing with partly dissolving (or impregnating) the graft copolymer in (or with) a mixture of an aromatic vinyl compound and a polar vinyl compound to bulk, suspension or bulk-suspension polymerization in the presence of a polymerization initiator.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile