Compositions and use of cis-1,1,1,4,4,4-hexafluoro-2-butene foam-forming composition in the preparation of polyisocyanate-based forms
View Patent ↗A foam-forming composition is disclosed which includes both cis-1,1,1,4,4,4-hexafluoro-2-butene and a poorly compatible active hydrogen-containing compound having two or more active hydrogens. Also disclosed is a closed-cell polyurethane or polyisocyanurate polymer foam prepared from reaction of effective amounts of the foam-forming composition and a suitable polyisocyanate. Also disclosed is a process for producing a closed-cell polyurethane or polyisocyanurate polymer foam by reacting an effective amount of the foam-forming composition with a suitable polyisocyanate.
1. A foam-forming composition comprising cis-1,1,1,4,4,4-hexafluoro-2-butene and a poorly compatible active hydrogen-containing compound having two or more active hydrogens, wherein said poorly compatible active hydrogen-containing compound having two or more active hydrogens is a polyether polyol and a highly compatible active hydrogen-containing compound having two or more active hydrogens.
2. The foam-forming composition of claim 1 wherein said highly compatible active hydrogen-containing compound is a polyol.
3. The foam-forming composition of claim 2 wherein said highly compatible active hydrogen-containing compound is a polyether polyol.
4. A closed-cell polyurethane or polyisocyanurate polymer foam prepared from reaction of effective amounts of the foam-forming composition of claim 1 and a suitable polyisocyanate.
5. The closed-cell polyurethane or polyisocyanurate polymer foam of claim 4 wherein said polymer foam has an initial R-value greater than 6.5 ft 2 -hr-° F./BTU-in.
6. A process for producing a closed-cell polyurethane or polyisocyanurate polymer foam comprising: reacting an effective amount of the foam-forming composition of claim 1 and a suitable polyisocyanate.