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:
Jun. 19, 1984
Filed:
Jun. 22, 1982
Yoshio Tomishima, Kobe, JP;
Teiji Kobayashi, Takasago, JP;
Hiroshi Shibahara, Takasago, JP;
Yasuhiro Nojima, Akashi, JP;
Kanegafuchi Kagaku Kogyo Kabushiki Kaisha, Osaka, JP;
Abstract
A method for production of vinyl chloride resin is provided, in which vinyl chloride or a monomeric mixture containing vinyl chloride as a major ingredient is polymerized, while controlling the operation of a reflux condenser provided at a polymerization vessel by supplying hot water or steam and then cooling water to the side of cooling water of the condenser, whereby bubbling is suppressed. The method provides outstanding advantages, such as, a high quality product improved with respect to fish eyes, high productivity, a shortened polymerization time, and a savings in steam for heating.