Organo-modified silicone polymers

US9944742B2 · kind B2 · utility

Assignee

• Momentive Performance Materials GmbH · US

Inventors

• Anubhav Saxena · Bengaluru, IN
• Sandeep Naik · Jamkhed, IN
• Monjit Phukan · Bengaluru, IN
• Shreedhar Bhat · Bengaluru, IN

Key dates

• Filing date: Sep 22, 2014
• Grant date: Apr 17, 2018
• Expiry date: Sep 22, 2034

Classification

• Technology area (CPC G): Physics
• CPC primary: G02B2207/109
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A linear silicone polymer suitable for use in producing homopolymers, copolymers, polymerized emulsions, latex compositions, and hydrogel polymer films. In one aspect, a hydrophilic silicone monomer is of the Formula 1:WAmBnW  (1)Where, A is a divalent block comprising a silicone-containing pendant group. In one embodiment, the silicone-containing pendant group comprises polyalkylene oxide groups. The structure of the polymer can be controlled and tuned to provide a material with excellent wettability and oxygen permeability. The polymers are suitable for use in a variety of applications including in providing a film for forming contact lenses.