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US 12,570,874 B2Granted
Gel gasket
AssigneesNitto, Inc., Nitto Denko Corporation
InventorKazuhiro Kitayama
Life of this patent
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Abstract
The present disclosure provides a gel gasket comprised, in part, of a pressure sensitive adhesive. The gel gasket is flame retardant and has anti-corrosive properties. In at least one embodiment, the gel gasket has a storage modulus of about 1,000 to about 25,000 Pa and the storage modulus is maintained after storage at 66° C./80% RH for at least 2 weeks.
Claims11
A gel gasket comprising:
- at least one pressure sensitive adhesive, a flame-retardant agent, a tackifier, a catalyst, a stabilizer, and an inhibitor,
- wherein the inhibitor comprises alkyne alcohol;
- wherein the at least one pressure sensitive adhesive comprises a polyoxyalkylene adhesive obtained by reacting a monomer or polymer with a cross-linking agent, the cross-linking agent having at least one siloxane bond and at least one reactive functional group, the at least one reactive functional group being a hydrosilyl group;
- wherein the amount of the cross-linking agent is in a range of about 2.0 parts to 7.0 parts by weight per 100 parts of the monomer or polymer for the at least one pressure sensitive adhesive;
- wherein the flame-retardant agent is a phosphorus flame-retardant agent;
- wherein the tackifier has an acid value of less than 50 mg KOH/g;
- wherein the catalyst comprises a platinum compound;
- wherein the stabilizer is a Brønsted base;
- wherein the stabilizer is a hindered amine light stabilizer;
- and
- wherein the gel gasket has a storage modulus in the range of 1,000 Pa or more and 25,000 Pa or less after storage at 66° C./80% RH for at least 2 weeks.
8 more elements
Dependencies are inferred from the claim text.