Cross-linked aminosiloxane polymer and method of forming

US9890253B2 · kind B2 · utility

Assignee

• Dow Corning Corporation · US

Inventors

• Qian Feng · Midland, US
• Patrick J. Fryfogle · Midland, US
• Bethany K. Johnson · Midland, US
• Zhi Li · Midland, US
• Kimmai Thi Nguyen · Midland, US
• Ryan Christopher Thomas · Midland, US

Key dates

• Filing date: May 20, 2015
• Grant date: Feb 13, 2018
• Expiry date: May 20, 2035

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C11D17/0017
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

A cross-linked aminosiloxane polymer includes a first siloxane backbone, a second siloxane backbone, and at least one intramolecular structure cross-linking a silicon atom of the first siloxane backbone and a silicon atom of the second siloxane backbone. The intramolecular structure has the chemical structure: (I) In Formula (I), X is chosen from the following groups; (II); (III); or (IV). In groups (II), (III), and (IV), each R is independently a C1-C10 hydrocarbon group. Each R1 is independently a C1-C10 hydrocarbon group. Each R2 is independently a hydrogen atom, OH, a C1-C12 hydrocarbon group, a phenyl group, R′(OR″)m, or R′OH. Each of R′ and R″ is independently an alkyl group and “m” is 1 to 3. Moreover, “a” is 0 or 1. The cross-linked aminosiloxane polymer can be formed by the method of this disclosure.