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US 2022/0289970 A1Published application
Thermoplastic polyurethane and process for making a thermoplastic polyurethane and components thereof
AssigneeLubrizol Advanced Materials, Inc.
InventorTrinidad Piedra Clemente
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Abstract
A heat resistant thermoplastic polyurethane composition is made by a reaction including a polyol component comprising the reaction of ε-caprolactone initiated with a polydimethylsiloxane and a polyether polyol.
Claims27
A thermoplastic polyurethane composition comprising the reaction product of:
- (a) a polyol component made from the reaction of ε-caprolactone initiated with a polydimethylsiloxane polyol and a polyether polyol;
- (b) a diisocyanate.
The thermoplastic polyurethane of claim wherein the polyether polyol consists of poly(tetramethylene ether glycol).
A process for making a thermoplastic polyurethane comprising the steps of:
- (i) making a polyol comprising the reaction product of ε-caprolactone initiated with a polydimethylsiloxane polyol and a polyether polyol;
- (ii) reacting the polyol with a diisocyanate.
A method making an article from a thermoplastic polyurethane composition comprising the steps of:
- (i) making a polyol component by reacting ε-caprolactone with a polysiloxane polyol and a polyether polyol in amounts sufficient to form a polyol having a number-average molecular weight of 1,000 to 10,000 or 2,000 to 10,000, or 2,000 to 4,000, or 3,000 to 4,000 measured by assay of terminal functional groups
- (ii) reacting the polyol component with a diisocyanate;
- and
- (ii) forming an article by extrusion or molding.
1 more element
Dependencies are inferred from the claim text.