Method for producing a thermosetting polyurethane from a...

Details Method for producing a thermosetting polyurethane from a... Method for producing a thermosetting polyurethane from a...

2005-03-01

2005-03-01

Moore, Margaret G. (Department: 1712)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From silicon reactant having at least one...

C528S038000

Reexamination Certificate

active

06861491

ABSTRACT:
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 R1,R2,R3=aliphatic alkyl, aromatic alkyl; n>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.

REFERENCES:
patent: 3627722 (1971-12-01), Seiter
patent: 3632557 (1972-01-01), Brode
patent: 3979344 (1976-09-01), Bryant et al.
patent: 4474933 (1984-10-01), Huber et al.
patent: 4625012 (1986-11-01), Rizk et al.
patent: 5700868 (1997-12-01), Hanada

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