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:
Mar. 24, 2015
Filed:
Jun. 14, 2012
Kamesh R. Vyakaranam, Pearland, TX (US);
Ling Zhang, Missouri City, TX (US);
Venkat S. Minnikanti, Pearland, TX (US);
Rajat Duggal, Pearland, TX (US);
William A. Koonce, Pearland, TX (US);
Amarnath Singh, Pearland, TX (US);
Phillip S. Athey, Lake Jackson, TX (US);
Kamesh R. Vyakaranam, Pearland, TX (US);
Ling Zhang, Missouri City, TX (US);
Venkat S. Minnikanti, Pearland, TX (US);
Rajat Duggal, Pearland, TX (US);
William A. Koonce, Pearland, TX (US);
Amarnath Singh, Pearland, TX (US);
Phillip S. Athey, Lake Jackson, TX (US);
Dow Global Technologies LLC, Midland, MI (US);
Abstract
Methods of producing a composition comprising a crosslinkable silane-terminated polymer having at least one crosslinkable silyl group in each molecule are provided. The method may comprise providing a polymer having at least one unsaturated group and at least one alcohol hydroxyl group in each molecule and having a number average molecular weight between about 100 and about 5,000, adding to the polymer a compound having a hydrogen-silicon bond and a crosslinkable silyl group in each molecule and a hydrosilylation catalyst to thereby carry out a hydrosilylation reaction to form a composition comprising hydrosilylated polymers, wherein the hydrosilylation reaction has a hydrosilylation efficiency greater than 50% as determined byH-NMR, capping the hydrosilylated polymers by adding the hydrosilylated polymer to at least one isocyanate at an index of between about 100 and about 250, and reacting the isocyanate capped hydrosilylated polymer with a polyol having a nominal functionality of at least 2 to form the composition comprising a crosslinkable silane-terminated polymer.