Isocyanate-reactive compositions containing internal mold release agents
AssigneeImperial Chemical Industries PLC
InventorsBrian Fogg, Herbert Russell Gillis, Nai Wen Lin
Life of this patent
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Abstract
An isocyanate-reactive composition is provided which comprises: (a) at least one compound having a plurality of isocyanate-reactive groups; and (b) a fatty polyamine having the formula: R.sup.1 --(NH--R.sup.2).sub.x --NH.sub.2 wherein R.sup.1 is an alkyl group containing 8 to 40 carbon atoms, R.sup.2 is a divalent linking group containing 1 to 8 carbon atoms and x has a value of 1 to 4. Methods for preparing flexible foam articles utilizing the isocyanate-reactive compositions are also provided.
Claims25
An isocyanate-reactive composition for use in the manufacture of flexible foam, comprising:
- (a) at least one compound having a plurality of isocyanate-reactive groups;
- and
- (b) an internal mold release agent consisting essentially of a fatty polyamine having the formula
- R.sup.1 --(NH--R.sup.2).sub.x --NH.sub.2
- wherein R.sup.1 is an alkyl group containing 8 to 40 carbon atoms, R.sup.2 is a divalent linking group containing 1 to 8 carbon atoms, and x has a value in the range of 1 to 4.
A reaction system for preparing flexible polyurethane or polyurea articles comprising:
- (a) an organic polyisocyanate;
- and
- (b) an isocyanate-reactive composition comprising:
- (i) at least one compound having a plurality of isocyanate-reactive groups;
- and
- (ii) an internal mold release agent consisting essentially of a fatty polyamine having the formula
- R.sup.1 --(NH--R.sup.2).sub.x --NH.sub.2
- wherein R.sup.1 is an alkyl group containing 8 to 40 carbon atoms, R.sup.2 is a divalent linking group containing 1 to 8 carbon atoms, and x has a value in the range of 1 to 4.
A process for preparing a molded polyurethane or polyurea flexible foam article comprising the steps of:
- (a) introducing into a mold an organic polyisocyanate and an isocyanate-reactive composition comprising:
- (i) at least one compound having a plurality of isocyanate-reactive groups;
- and
- (ii) an internal mold release agent consisting essentially of a fatty polyamine having the formula:
- R.sup.1 --(NH--R.sup.2).sub.x --NH.sub.2
- wherein R.sup.1 is an alkyl group containing 8 to 40 carbon atoms, R.sup.2 is a divalent linking group containing 1 to 8 carbon atoms, and x has a value in the range of 1 to 4;
- (b) reacting the polyisocyanate and the isocyanate-reactive composition to form a molded article;
- and
- (c) removing the molded article from the mold.
A process for preparing a molded polyurethane or polyurea flexible foam article comprising the steps of:
- (a) introducing into a mold an organic polyisocyanate, a blowing agent, and an isocyanate reactive composition comprising:
- (i) at least one compound having a plurality of isocyanate-reactive groups;
- and
- (ii) an internal mold release agent consisting essentially of a fatty polyamine having the formula:
- R.sup.1 --(NH--R.sup.2).sub.x --NH.sub.2
- wherein R.sup.1 is an alkyl group containing 8 to 40 carbon atoms, R.sup.2 is a divalent linking group containing 1 to 8 carbon atoms, and x has a value in the range of 1 to 4;
- (b) reacting the polyisocyanate, the blowing agent and the isocyanate-reactive composition to form a molded flexible foam article;
- and
- (c) removing the molded article from the mold.
Dependencies are inferred from the claim text.