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US 5,985,947 AGranted
Extruded foamed silicone rubber composition and method for making same
OwnerPeter Hageninventor
Life of this patent
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Abstract
An extruded foamed silicone rubber composition including ammonium carbonate or ammonium bicarbonate reacted with acetic acid at room temperature. The components can be adjusted to control the degree of foaming, and the amount of acetic acid can be adjusted to control the cure rate.
Claims14
A foamable silicone composition comprising by weight:
- 85 to 98% of a silicone base including a silicone polymer;
- 2 to 12% of a crosslinker component including a foaming agent selected from the group consisting of ammonium carbonate and ammonium bicarbonate
- 0.25 to 4% of a catalyst component including acetic acid.
A method of producing a foamed silicone composition comprising the steps of providing:
- 85 to 98% by weight of a silicone base including a silicone polymer;
- 2 to 12% by weight of a crosslinker component including a foaming agent which comprises a compound selected from the group consisting of ammonium carbonate and ammonium bicarbonate;
- 0.25 to 4% by weight of a catalyst including acetic acid;
- and mixing the components at ambient temperature.
1 more element
Dependencies are inferred from the claim text.