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:
Oct. 12, 2004
Filed:
May. 29, 2002
Applicant:
Inventors:
John Robert Keryk, Midland, MI (US);
Dimitris Elias Katsoulis, Tokyo 150-0035, JP;
Katsuya Eguchi, Kanagawa, JP;
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G 7/706 ; C08G 7/704 ; C08L 8/304 ;
U.S. Cl.
CPC ...
C08G 7/706 ; C08G 7/704 ; C08L 8/304 ;
Abstract
An organopolysiloxane copolymer, comprising (i) R SiO units, (ii) random R SiO units, and (iii) linear (R SiO) units, wherein R is independently hydrocarbyl or halogen-substituted hydrocarbyl, R and R are independently R or H, n has an average value of from 5 to 500, the mole ratio of R SiO units to R SiO units is from 1 to 30, and the mole ratio of R SiO units and R SiO units combined to (R SiO) units is from 3 to 600 when the copolymer contains aliphatic unsaturation or from 1 to 600 when the copolymer is free of aliphatic unsaturation; and a method of preparing the organopolysiloxane copolymer.