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:
Feb. 10, 2015
Filed:
Aug. 08, 2012
Barry C. Arkles, Pipersville, PA (US);
Jonathan D. Goff, Philadelphia, PA (US);
Barry C. Arkles, Pipersville, PA (US);
Jonathan D. Goff, Philadelphia, PA (US);
Gelest Technologies, Inc., Morrisville, PA (US);
Abstract
Linear siloxane polymers having low viscosities, precise molecular weights and two distinct polymer termini are provided. Preferred viscosities are greater than 5 cSt and less than 20,000 cSt, and the preferred functionalities at the polymer termini are one hydrogen and one vinyl group, each attached to a silicon atom. Methods for producing such siloxane polymers are also described In the presence of catalysts, such as Ptcomplexes, these siloxanes undergo step-growth polymerization to form elastomers at temperatures below 150° C.