Polysiloxane polyurea urethanes

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From silicon reactant having at least one...

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528 29, 528 38, 525453, C08G 77458, 528, 528, 528, 525, 525, 525

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052217248

ABSTRACT:
Polysiloxane-containing polyurea and polyurea urethane block copolymers and devices formed therefrom are biocompatible and demonstrate improved physical and mechanical properties. The pre-reaction of an amine-terminated polysiloxane soft segment with an organic diisocyanate provides an oligomer that enhances the hydrophilic properties of the copolymer.

REFERENCES:
patent: 2907782 (1959-10-01), Pike
patent: 3666726 (1972-05-01), Grogler et al.
patent: 4002794 (1977-01-01), Schwarcz
patent: 4164491 (1979-08-01), Itoh et al.
patent: 4312920 (1982-01-01), Pierce et al.
patent: 4504313 (1985-03-01), Robertson
patent: 4528343 (1985-07-01), Kira
patent: 4605712 (1986-08-01), Mueller et al.
patent: 4631329 (1986-12-01), Gornowicz
patent: 4644046 (1987-02-01), Yamada
"Properties of Polyether-Polyurethane Zwitterionomers" Hwang et al., Polymer Engineering and Science, Oct. 1981, vol. 21, No. 15 pp. 1027-1036.
"Segmented Organosiloxane Copolymers: I. Synthesis of Siloxane-Urea Copolymers" Yilgor et al., Polymer, Dec. 1984 vol. 25 pp. 1800-1806.
"Segmented Organsiloxane Copolymers: II Thermal and Mechanical Properties of Siloxane-Urea Copolymer" Yilgor et al., Polymer, Dec. 1984 vol. 25, pp. 1807-1816.
Chen-Tsai et al., Polymer, 27, 659-666 (1986).
Speckhard et al., Rubber Chemistry and Tech., 59, 405-431 (1986).
Yu et al., "Polydimethylsiloxane-Polyurethane Elastomers: Synthesis and Properties of Segmented Copolymers and Related Zwitterionomers," J. Polym. Sci., Polymer Phys. Ed., 23, 2319-2338 (1985).
Yu et al., "Properties of Ultraviolet Cured Polydimethyl Siloxane-Urea Acrylates," J. App. Polym. Sci., 30, 2115-2135 (1985).

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