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:
Jan. 01, 2002
Filed:
Jun. 18, 1999
Applicant:
Inventors:
Katsuhiro Uehara, Nakakubiki-gun, JP;
Mikio Endo, Nakakubiki-gun, JP;
Tohru Kubota, Nakakubiki-gun, JP;
Satoshi Uchida, Nakakubiki-gun, JP;
Kanji Murofushi, Nakakubiki-gun, JP;
Assignee:
Shin-Etsu Chemical Co., Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
B01D 3/10 ; B01D 3/34 ; C07F 7/18 ; C07F 7/20 ;
U.S. Cl.
CPC ...
B01D 3/10 ; B01D 3/34 ; C07F 7/18 ; C07F 7/20 ;
Abstract
A (meth)acryloxy-bearing alkoxysilane is isolated and purified to a high purity by distilling a reaction solution containing the (meth)acryloxy-bearing alkoxysilane in a thin-layer distillation device at a temperature of 90-160° C. and a vacuum of 1-15 mmHg. The resulting alkoxysilane product does not give rise to the quality problem that the product will gradually whiten during storage owing to contact with air. The occurrence of self-polymerization of the alkoxysilane is restrained.