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US 5,470,501 AGranted
Processability of hydrocarbon blown, polyisocyanate based foams through use of a compatibilizing agent
AssigneeBASF SE
InventorsThomas L. Fishback, Thomas B. Lee
Life of this patent
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Abstract
There is now provided a polyisocyanate-based foam made by an organic polyisocyanate with a polyol solution containing a C.sub.4 -C.sub.7 aliphatic and/or cycloaliphatic hydrocarbon as a blowing agent. The hydrocarbon blowing agent is soluble in the polyol solution having polyols with polyester linkages by using a reacted or unreacted compatibilizing agent represented by the formula: ##STR1## wherein R.sup.1 is preferentially OH, and R.sup.2 is a C.sub.6 -C.sub.24 aliphatic, branched or unbranched, hydrocarbon group.
Claims12
A polyol solution comprising:
- a) a polyol having polyester linkages;
- b) a blowing agent comprising an aliphatic or cycloaliphatic C.sub.4 -C.sub.7 hydrocarbon;
- c) a reacted or unreacted compatibilizer represented by the following formula:
- ##STR5## wherein R.sup.1 is OH, NH.sub.2, COOH, or oxyalkylated addition products thereof;
- and
- R.sup.2 is a C.sub.6 -C.sub.24 aliphatic, branched or unbranched, hydrocarbon group.
3 more elements
Dependencies are inferred from the claim text.