Patent · US Active

Dry silicone gels and their methods of making using thiol-ene chemistry

US8967888B2 · kind B2 · utility

2Cited by

4References

33Claims

0Family size

Assignee

Tyco Electronics Raychem GmbH · DE

Inventors

Otto van den Berg · Wilsele, BE
Stephane J. G. Berghmans · Sint-Pauwels, BE
Filip Du Prez · Evergem, BE

Key dates

Filing date	Apr 25, 2012
Grant date	Mar 3, 2015
Priority date	—
Expiry date	Feb 19, 2033

Classification

Technology area (CPC H)Electricity
CPC primaryH01R24/64
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

Methods and systems are provided for a dry silicone gel. The dry silicone gel comprises a base polymer having a vinyl-silicone group and a crosslinker having thiol groups. The dry silicone gel may be made without the use of a catalyst by reacting the base polymer and crosslinker in the presence of a photo or thermal initiator. In some embodiments, the gel also comprises a chain extender having thiol groups. In certain embodiments, the dry silicone gel may comprise: (1) a hardness between 100 g and 300 g, (2) a stress relaxation between 30% and 60% when subjected to a deformation of 50% of the original size of the gel, (3) a compression set between 4% and 20% after 50% strain has been applied to the gel for 1000 hours at 70° C., and/or (4) less than 10% oil bleed out under compression of 1.2 atm after 60 days at 60° C.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.