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.

Date of Patent:
Feb. 06, 1979

Filed:

Mar. 24, 1976
Applicant:
Inventors:

Isao Kaetsu, Takasaki, JP;

Hiroshi Okubo, Takasaki, JP;

Fumio Yoshii, Takasaki, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F / ; C08F / ;
U.S. Cl.
CPC ...
526 73 ; 20415923 ; 20415922 ; 526218 ; 526230 ; 526232 ; 526273 ; 526320 ; 526328 ; 526333 ; 526334 ;
Abstract

This invention provides a process for preparing a transparent polymeric product free from strain and bubbles and having improved physical and chemical properties. The product can be produced from a bis-allylcarbonate-based monomer mixture by cast polymerization for extremely shortened polymerization time.


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