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. 31, 1983
Filed:
Feb. 10, 1982
Applicant:
Inventors:
Sameer H Eldin, Birsfelden, CH;
Peter Grieshaber, Binningen, CH;
Assignee:
Ciba-Geigy Corporation, Ardsley, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F / ;
U.S. Cl.
CPC ...
526218 ; 526 89 ; 526263 ;
Abstract
Process for the preparation of copolymers of definite specific viscosities from hydantoin vinyl ethers of the formula I and olefinically unsaturated compounds by free-radical polymerization of the monomers in a solvent mixture consisting of cyclohexane and toluene, it being possible to vary the specific viscosity of the copolymers within wide limits by altering the ratio of the two solvents. The meaning of the individual symbols can be seen in patent claim 1.