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:
Nov. 30, 1976
Filed:
Sep. 12, 1975
Applicant:
Inventors:
Guy A Crosby, Palo Alto, CA (US);
Masao Kato, Moscow, ID (US);
Assignee:
Dynapol Corporation, Palo Alto, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F / ; C08F / ;
U.S. Cl.
CPC ...
526 46 ; 526 21 ;
Abstract
Polystyrene is halomethylated by contact with a solution of halomethoxybutane in a reaction medium (preferably halohydrocarbon) in the presence of a transition metal halide catalyst at a temperature of from about 5.degree. C to about 100.degree. C.