Lubrizol Advanced Materials, Inc.

Noveon IP Holdings Corp.

Setup Performance

Didier Lagneaux

Jean-Pierre Pascault

Francoise Mechin

Vicky M J Bertels

Robert Jansen

Stephane Dassin

Michel Dumon

Jérôme Gimenez

Yvon Tirel

Thermoplastic polyurethane (TPU) compositions are disclosed comprising TPU polymer, polyisocyanate, and a salt of zirconium phosphate. The compositions have enhanced thermal properties, good processability, and good hydrolysis resistance. Processes are also disclosed to combine the ingredients by melt mixing or to prepare the compositions in-situ as the TPU is being polymerized.

Thermoplastic polyurethanes containing a salt of zirconium phosphate

A method for producing thermosetting polyurethaneafter transformation from thermoplastic polyurethane with a hydrolyzable organo-silane which is grafted onto macromolecules of said thermoplastic polyurethane by means of a bonding agent. Said organo-silane has general formula (I), wherein R,R,R=aliphatic alkyl, aromatic alkyl; n&#x3e;1; R4 is an organic radical which can react with said bonding agent which comprises at least two isocyanate functions and the thermoplastic polyurethane obtained can, after transformation, become automatically cross-linked by coming into contact with water molecules in order to become thermosetting. The invention also relates to a product which can be obtained according to the inventive method.

Method for producing a thermosetting polyurethane from a thermoplastic polyurethane and thermoset polyurethane obtainable using said method

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Chozeau, France

Didier Lagneaux