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:
Oct. 07, 1997
Filed:
Sep. 25, 1995
SKC Limited, Kyungki-do, KR;
Abstract
A polyester film having improved surface and mechanical properties is prepared by transesterifying and polycondensing a dialkyl ester of an aromatic dicarboxylic acid and a glycol to give a polyester resin, and melt-extruding and drawing the polyester resin to give the polyester film, wherein calcium carbonate, surface treated with a titanate coupling agent by adding the titanate coupling agent to a glycol slurry containing 20 to 60 wt % of ball or rugby ball shaped vaterite type calcium carbonate having an average diameter ranging from 0.01 to 3 .mu.m is incorporated during the preparation process of the polyester resin as a slip agent.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile