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:
Sep. 22, 2009
Filed:
Jul. 02, 2004
Stephen Edward Cray, Sully, GB;
Robert Alan Ekeland, Midland, MI (US);
Peter Cheshire Hupfield, Trevaughan, GB;
Sarah O'hare, Nr. Barry, GB;
David A. Rich, Barry, GB;
Marc Thibaut, Chapelle-Lez-Herlaimont, BE;
Stephen Edward Cray, Sully, GB;
Robert Alan Ekeland, Midland, MI (US);
Peter Cheshire Hupfield, Trevaughan, GB;
Sarah O'Hare, Nr. Barry, GB;
David A. Rich, Barry, GB;
Marc Thibaut, Chapelle-Lez-Herlaimont, BE;
Dow Corning Corporation, Midland, MI (US);
Abstract
A release coating composition according to the present invention comprises an alkenyl functional polysiloxane (1), a silicon hydride functional polysiloxane (11) and a catalyst (111) comprising a platinum group metal. The alkenyl functional polysiloxane (1) is an alkenylterminated polysiloxane prepared by siloxane polycondensation and/or equilibration using a phosphazene base catalyst followed by neutralisation with an acidic neutralising agent. The level of catalyst (III) in the composition can be as low as 2-40 parts per million platinum group metal by weight.