SILICONE POLYMER DESICCANT COMPOSITION AND METHOD OF MAKING THE SAME

• US 20110291046A1
• Filed: 05/26/2011
• Published: 12/01/2011
• Est. Priority Date: 05/26/2010
• Status: Abandoned Application

• Current Assignee: Multisorb Technologies Incorporated (FGI Equity LLC)
• Original Assignee: Multisorb Technologies Incorporated (FGI Equity LLC)
• Inventors: Patrone, Louis, Incorvia, Samuel A.
• Application Number:
  US13/116,774
• Publication Number:
  US 20110291046A1
• Time in Patent Office: Days
• US Class Current: 252/194
• CPC Class Codes: B60R 21/2644 using only solid reacting substances, e.g. pellets, powder
• CPC Class Codes: C08G 77/20 containing silicon bound to unsaturated aliphatic groups C08G77/045 takes precedence
• CPC Class Codes: C08K 2003/2206 of calcium, strontium or barium
• CPC Class Codes: C08K 3/22 of metals
• CPC Class Codes: C08L 83/00 Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
• CPC Class Codes: C08L 83/04 Polysiloxanes
• CPC Class Codes: F42B 3/04 for producing gas under pressure generators of inflation fluid especially adapted for vehicle air bags B60R21/26

Abstract

A molded article including a blend of a self supporting silicone polymer and a sorbent, wherein the sorbent is homogeneously dispersed within the silicone polymer. A method of forming a molding composition including a silicone polymer and a sorbent, wherein the silicone polymer includes a first silicone material and a second silicone material, the first silicone material being different than the second silicone material, the method including the steps of: a) blending the first silicone material and the sorbent into a first blended composition, wherein the sorbent is homogeneously dispersed within the first silicone material; b) blending the second silicone material and the sorbent into a second blended composition, wherein the sorbent is homogeneously dispersed within the second silicone material; and, c) blending the first and second blended composition to form the molding composition, wherein the sorbent is homogeneously dispersed within the molding composition and the molding composition is heat curable.

Claims

1. A molded article comprising:

a blend of a self supporting silicone polymer and a sorbent, wherein the sorbent is homogeneously dispersed within the silicone polymer.

2. The molded article of claim 1 wherein the silicone polymer is a resin or an elastomer.

3. The molded article of claim 1 wherein the sorbent is a molecular sieve, a silica gel, an ion exchange resin, an activated carbon, an activated alumina, a clay, a zeolite, a particulate metal, a salt comprising a CO₂ releasing anion, calcium oxide or a mixture thereof.

4. The molded article of claim 1 wherein the sorbent is calcium oxide.

5. The molded article of claim 1 wherein the blend comprises from about five percent (5%) to about fifty-five percent (55%) sorbent and from about forty-five (45%) to about ninety-five (95%) silicone polymer.

6. The molded article of claim 1 wherein the blend comprises from about ten percent (10%) to about forty percent (40%) sorbent and from about sixty (60%) to about ninety (90%) silicone polymer.

7. The molded article of claim 1 wherein the article is a gasket, a seal or an insert.

8. The molded article of claim 1 wherein the silicone polymer comprises an alkyl silicone polymer and a vinyl silicone polymer.

9. A molding composition comprising:

a silicone component; and

,

a sorbent, wherein the sorbent is homogeneously dispersed within the silicone component.

10. The molding composition of claim 9 wherein the silicone component is a fluid, a resin or an elastomer.

11. The molding composition of claim 9 wherein the sorbent is a molecular sieve, a silica gel, an ion exchange resin, an activated carbon, an activated alumina, a clay, a zeolite, a particulate metal, a salt comprising a CO₂ releasing anion, calcium oxide or a mixture thereof.

12. The molding composition of claim 9 wherein the sorbent is calcium oxide.

13. The molding composition of claim 9 wherein the composition comprises from about five percent (5%) to about fifty-five percent (55%) sorbent and from about forty-five (45%) to about ninety-five (95%) silicone component.

14. The molding composition of claim 9 wherein the composition comprises from about ten percent (10%) to about forty percent (40%) sorbent and from about sixty (60%) to about ninety (90%) silicone component.

15. The molding composition of claim 9 wherein the silicone component comprises an alkyl silicone polymer and a vinyl silicone polymer.

16. A method of forming a molding composition comprising a silicone polymer and a sorbent, wherein the silicone polymer comprises a first silicone material and a second silicone material, the first silicone material being different than the second silicone material, the method comprising the steps of:

a) blending the first silicone material and the sorbent into a first blended composition, wherein the sorbent is homogeneously dispersed within the first silicone material;

b) blending the second silicone material and the sorbent into a second blended composition, wherein the sorbent is homogeneously dispersed within the second silicone material; and

,

c) blending the first and second blended composition to form the molding composition, wherein the sorbent is homogeneously dispersed within the molding composition and the molding composition is heat curable.

17. The method of claim 16 wherein the first silicone material is an alkyl silicone polymer and the second silicone material is a vinyl silicone polymer.

18. The method of claim 16 wherein the silicone polymer is a fluid, a resin or an elastomer.

19. The method of claim 16 wherein the sorbent is a molecular sieve, a silica gel, an ion exchange resin, an activated carbon, an activated alumina, a clay, a zeolite, a particulate metal, a salt comprising a CO₂ releasing anion, calcium oxide or a mixture thereof.

20. The method of claim 16 wherein the sorbent is calcium oxide.

21. The method of claim 16 wherein the molding composition comprises from about five percent (5%) to about fifty-five percent (55%) sorbent and from about forty-five (45%) to about ninety-five (95%) silicone polymer

22. The method of claim 16 wherein the molding composition comprises from about ten percent (10%) to about forty percent (40%) sorbent and from about sixty (60%) to about ninety (90%) silicone polymer.