Thermoplastic polyurethane composition
AssigneeLubrizol Advanced Materials, Inc.
InventorsDaniel Salvatella Radressa, Trinidad Piedra Clemente
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Abstract
The present invention provides a thermoplastic polyurethane comprising the reaction product of a polyisocyanate, a chain extender comprising hydroquinone bis (2-hydroxyethyl) ether, and a spiroglycol initiated polycaprolactone polyester polyol which exhibits reduced compression set %.
Claims20
A thermoplastic polyurethane composition comprising the reaction product of (a) a polyisocyanate, (b) a chain extender component comprising hydroquinone bis (2-hydroxyethyl) ether, and (c) a polyol component comprising a spiroglycol-initiated polycaprolactone polyol which is the reaction product of a caprolactone monomer with an alkylene substituted spirocyclic compound, wherein the alkylene substituted spirocyclic compound contains two rings containing from 5 to 7 atoms per ring, and where each ring is substituted with an alkylene group that contains from 1 to 4 carbon atoms, terminated by a hydroxy group or an amine where the amine is a primary or secondary amine.
The thermoplastic polyurethane composition of wherein the polyol component comprising a spiroglycol-initiated polycaprolactone polyol is
A method of reducing the compression set of a thermoplastic polyurethane comprising:
- preparing a thermoplastic polyurethane composition comprising a) a polyisocyanate, (b) a chain extender component comprising hydroquinone bis (2-hydroxyethyl) ether, and (c) a polyol component, comprising a spiroglycol-initiated polycaprolactone polyol which is the reaction product of a caprolactone monomer with an alkylene substituted spirocyclic compound, wherein the alkylene substituted spirocyclic compound contains two rings containing from 5 to 7 atoms per ring, and where each ring is substituted with an alkylene group that contains from 1 to 4 carbon atoms, terminated by a hydroxy group or an amine where the amine is a primary or secondary amine.
Dependencies are inferred from the claim text.