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US 2025/0084200 A1Published application
Thermosetting foams having improved insulating value
AssigneeHoneywell International Inc.
InventorsBin Yu, Ryan Hulse
Life of this patent
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Abstract
Disclosed are methods of forming foam comprising: (a) providing a foamable composition comprising an isocyanate, a polyol and a physical blowing agent comprising at least about 50% by weight of hydrohaloolefin, including trans1233zd, and wherein the polyol comprises a polyol or mixture of polyols such that the hydrohaloolefin, including trans1233zd, has a solubility in said polyol of less than about 30%; and (b) forming a foam from said foamable composition.
Claims20
A method of producing thermosetting, thermal insulating foam comprising:
- (a) providing a foamable composition comprising an isocyanate, a polyol and a physical blowing agent, wherein said polyol comprises at least about 50% by weight of low solubility polyol relative to said physical blowing agent, and wherein said physical blowing agent comprising at least about 50% by weight of trans-1-chloro-3,3,3-trifluoropropene (trans1233zd);
- and
- (b) forming a foam from said foamable composition.
A method of producing thermoset thermal insulating foam comprising:
- (a) providing a foamable composition comprising an isocyanate, a polyol and a physical blowing agent, wherein said physical blowing agent comprises at least about 50% by weight of trans-1-chloro-3,3,3-trifluoropropene (trans1233zd), and wherein said polyol comprises a polyol or mixture of polyols such that said trans1233zd has a solubility is said polyol of less than about 25%;
- and
- (b) forming a foam from said foamable composition.
Dependencies are inferred from the claim text.