Polysiloxane-polyurea block copolymers

Details Polysiloxane-polyurea block copolymers Polysiloxane-polyurea block copolymers

1989-01-03

1990-06-19

Marquis, Melvyn I.

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

Synthetic resins

From silicon reactant having at least one...

528 29, 556419, 556421, C08G 7704

Patent

active

049354825

ABSTRACT:
Polysiloxane-polyurea block copolymers are prepared from isocyanate and aminophenoxy functional polyorganosiloxane. These block copolymers are hydrolytically stable and exhibit improved thermal stability compared to aminoalkyl functional polyorganosiloxanes.

REFERENCES:
patent: 4213914 (1980-07-01), Bargain et al.
R. D. Lundberg, "Handbook of Thermoplastic Elastomers", Walker B. Med. Van Nostrand Reinhold Co., N.Y., pp. 269-272, (1979).
Pallerson, et al., J. of Pidgmer Science, Part A-1, 1089-1110 (1969).
Butler, et al., First Annual Summary Report, Thermally Resistand Polymers for Fuel Tank Sealants, Contract No. NA58-21401 DCN-1-8-84-10236(1F) and S1(1F), (1969) pp. 9 & 35.

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