Back to results
US 9,000,061 B2Granted
Foams and articles made from foams containing 1-chloro-3,3,3-trifluoropropene (HFCO-1233zd)
AssigneeHoneywell International Inc.
InventorsYiu Keung Ling, David J Williams
Life of this patent
Estimating the term…
Abstract
The present invention relates to poured-in place polyurethane foams and polyol premixes comprising 1-chloro-3,3,3-trifluoropropene (HFCO-1233zd) and one or more additional co-blowing agents.
Claims9
A poured-in place polyurethane foam comprising:
- a polymeric foam structure including a plurality of closed cells therein that comprise a gas comprising trans-1-chloro-3,3,3-trifluoropropene (HFCO-1233zd(E)) and cyclopentane wherein trans-1-chloro-3,3,3-trifluoropropene (HFCO-1233zd(E)) is provided an amount of from 50 mole % to 75 mole % and cyclopentane is provided in an amount from 25 mole % to 50 mole %, wherein the foam is a class B2 material, according to test method DIN 4102 B2, wherein the foam exhibits an initial thermal conductivity of about 0.13 BTU·in/ft2·h at about 40° F. to about 0.16 BTU·in/ft2·h at about 110° F.
A pour-in place foam premix comprising a polyol;
- a blowing agent comprising trans-1-chloro-3,3,3-trifluoropropene (HFCO-1233zd(E)) and cyclopentane;
- at least one surfactant;
- and at least one catalyst, wherein trans-1-chloro-3,3,3-trifluoropropene (HFCO-1233zd(E)) is provided an amount of from about 50 mole % to less than about 100 mole % and cyclopentane is provided in an amount from greater than about 0 mole % to about 50 mole % based on the total weight of the blowing agent, wherein the foam is a class B2 material, according to test method DIN 4102 B2, wherein the foam exhibits an initial thermal conductivity of about 0.13 BTU·in/ft2·h at about 40° F. to about 0.16 BTU·in/ft2·h at about 110° F.
Dependencies are inferred from the claim text.