Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1990-10-31
1992-07-07
Bleutge, John C.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
525424, 525431, 525440, 525446, 525452, 525453, 525459, 528 28, 528 29, C08G 1861, C08G 1883
Patent
active
051284081
ABSTRACT:
A gas-permeable material with excellent compatibility with blood comprising polyurethane, polyurethaneurea, or the derivatives thereof is provided. The polyurethane or polyurethaneurea is obtained from a composition that comprises diisocyanate; polysiloxane containing terminal hydroxyl groups; and polyol or polyamine containing at least one tertiary amino gorup. The derivatives of the polyurethane or polyurethaneurea is obtained by the following steps of: converting the tertiary amino groups contained in the polyurethane or the polyurethaneurea to quarternary ammonium groups, and treating the polyurethane or the polyurethaneurea having quarternary ammonium groups with heparin.
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Xue-Hai, et al., "Polydimethylsiloxane-Polyurethane Elastomers: Synthesis and Properties of Segmented Copolymers and Related Zwitterionomers", Journal of Polymer Science, Polymer Physics Ed., 23, 2319-2338 (1985).
"Segmented Organopolysiloxane Copolymer: 1 Synthesis of Siloxane-Urea Copolymers", Yilgor et al., Polymer, Dec. 1984, vol. 25, pp. 1800-1806.
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Kashiwabara Susumu
Murata Satoru
Murayama Ken
Tanaka Masakazu
Bleutge John C.
Dean Jr. R.
Toyo Boseki Kabushiki Kaisha
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