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. 23, 1978
Filed:
Jan. 08, 1976
Applicant:
Inventors:
Mineo Nagano, Yokkaichi, JA;
Michio Saitoh, Yokkaichi, JA;
Shigeru Awazawa, Yokkaichi, JA;
Koji Tanaka, Yokkaichi, JA;
Assignee:
Primary Examiner:
Int. Cl.
CPC ...
C08F / ;
U.S. Cl.
CPC ...
260 / ; 260 / ; 260 / ; 260 / ; 260 / ; 260 / ; 260 4218 ; 260 4221 ; 260 4247 ; 260 4253 ; 2608 / ; 260860 ; 2608 / ; 260899 ; 264331 ; 526 78 ; 526201 ;
Abstract
A process for preparing a polyvinylchloride composition by polymerizing vinyl chloride or vinyl chloride and a comonomer comprises polymerizing vinyl chloride or a mixture of vinyl chloride and a comonomer in the gaseous phase under a polymerization pressure which is less than the saturated vapor pressure of vinyl chloride at the polymerization temperature, in the presence of additives required for later formation of a molded product.