Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Patent
1983-03-15
1986-08-05
Ivy, C. Warren
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Processes of preparing a desired or intentional composition...
524108, 524111, 524500, 524539, 525440, 525452, 525460, 525903, C08L 8306, C09D 500, C09K 300
Patent
active
046044124
ABSTRACT:
A stable polymer emulsion composition capable of giving a thromboresistant surface, said composition comprising polyurethane, a polydiorganosiloxane, and a cyclic ether, said polydiorganosiloxane being dispersed as particles having an average particle diameter of 0.1 to 50 microns in a solution of the polyurethane in the cyclic ether, and at least a part of the surfaces of said particles being crosslinked. The said composition can be prepared by dispersing a polydiorganosiloxane having a hydroxyl or acetate end group as fine particles in a solution of polyurethane in a cyclic ether to form an emulsion, and reacting the polydiorganosiloxane with a crosslinking agent to crosslink at least a part of the surfaces of the particles in the presence of 10 to 500 ppm of water.
REFERENCES:
patent: 3562352 (1971-02-01), Nyilas
patent: 3746683 (1973-07-01), Salyer
patent: 3941733 (1976-03-01), Chang
patent: 4202807 (1980-05-01), Moretto
Joh Yasushi
Kaneko Noriaki
Nagase Toshio
Ivy C. Warren
Nippon Zeon Co., Ltd
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