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US 2004/0204512 A1Published application
Foams and methods of producing foams
OwnerMary Bogdan, Leslie Bement +1inventors
InventorsMary Bogdan, Leslie Bement, David Williams
Life of this patent
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Abstract
Disclosed are low k-factor foams and methods of producing such foams. The methods comprise cooling high boiling blowing agent compounds to low temperatures and in introducing such cooled, high boiling blowing agents to the reaction mixture from which the foam is made.
Claims22
A method of producing a foam comprising the steps of:
- (a) providing a foamable reaction mixture having an initial reaction temperature;
- (b) providing a blowing agent comprising at least one high boiling flurocarbon compound at a temperature below said initial reaction temperature;
- (c) introducing said reduced temperature blowing agent to the reaction mixture;
- and
- (d) creating a foam from said reaction mixture containing said blowing agent.
2 more elements
A method of producing a foam comprising the steps of:
- (a) providing a foamable reaction mixture comprising a polyisocyanate, a polyol, and catalyst, said mixture having an initial reaction temperature of no less than about 70° F.;
- and
- (b) introducing to the reaction mixture HFC-365mfc at a temperature of no greater than about 65° F.;
- and
- (c) forming a rigid foam having a k-factor of less than about 0.160 from said reaction mixture after said introducing step (b).
2 more elements
The method of claim 21 wherein said blowing agent further comprises pentfluorpropane.
A method of producing a foam comprising the steps of:
- (a) providing a foamable reaction mixture;
- and
- (b) introducing to the reaction mixture a blowing agent at a temperature of not greater than about 76° F.;
- and
- (c) forming a rigid foam having a k-factor of less than about 0.160 from said reaction mixture after said introducing step (b).
2 more elements
Dependencies are inferred from the claim text.