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:
Mar. 16, 1993
Filed:
Aug. 06, 1991
Yoshikiyo Miura, Chiba, JP;
Kyotaro Shimazu, Chiba, JP;
Dainippon Ink and Chemicals, Inc., Tokyo, JP;
Abstract
A process for producing a styrenic copolymer for injection molding or extrusion molding by continuous mass polymerization of a styrenic monomer with a polymerizable unsaturated fatty acid, charcterized by using a polymerization apparatus comprising a circulation polymerization line (I) in which a tubular reactor with plural mixing elements fixed therein is incorporated, said mixing elements having no mobile parts, and a second non-circulation polymerization line (II) provided in succession to said circulation polymerization line (I), in which a tubular reactor with plural mixing elements fixed therein is incorporated, said mixing elements having no mobile parts; and supplementing the polymerizable unsaturated fatty acid to at least two spots of the second non-circulation polymerization line (II).
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile