Method of producing polyurethane pads produced therewith

Details Method of producing polyurethane pads produced therewith Method of producing polyurethane pads produced therewith

2007-02-13

2007-02-13

Gorr, Rachel (Department: 1711)

Stock material or miscellaneous articles

Composite

Of polyamidoester

C156S327000, C156S307100, C428S420000, C428S423300, C428S424800, C428S423900

Reexamination Certificate

active

10822879

ABSTRACT:
A method of producing polyurethane pads and other articles has the steps of providing at least one polyurethane layer having a first curing agent, providing a second polymer layer having a second curing agent, providing a connecting layer between the first and second layers with the first curing agent as in the first polyurethane layer, and subjected the layers to a thermal treatment so that the same first curing agent migrates from the connecting layer to the first polyurethane layer and vice versa. Also, an article produced by the method is proposed.

REFERENCES:
patent: 3265669 (1966-08-01), Hirosawa
patent: 4198739 (1980-04-01), Budinger et al.
patent: 5225248 (1993-07-01), Stephenson
patent: 5314945 (1994-05-01), Nickle et al.
patent: 2003/0148037 (2003-08-01), McKeand

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