Chemistry of carbon compounds – Miscellaneous organic carbon compounds
Patent
1977-03-04
1978-10-31
Jacobs, Lewis T.
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
260 336AQ, 128 1R, C08L 8310
Patent
active
041234090
ABSTRACT:
A sealing material for use in contact with animal tissue such as for sealing a stoma opening. The material is a thermoplastic elastomer made by mixing: (1) at least one part of a high molecular weight, nonvolatile oil with (2) a block copolymer having non-elastomeric thermoplastic end blocks and an elastomeric intermediate block which form separate phases. In one embodiment, the end blocks are polystyrene, the intermediate block is either butadiene or isoprene polymer, and the oil is a hydrocarbon oil. In another embodiment, the end blocks are polyalphamethylstyrene, the intermediate block is polydimethylsiloxane, and the oil is a silicone oil.
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patent: 3612053 (1971-10-01), Pratt
patent: 3665052 (1972-05-01), Saam et al.
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patent: 3827999 (1974-08-01), Crossland
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Morton-Rubber Technology (2nd ed.) (Van Nostrand) (N.Y.) (1973), p. 530.
Hackhi's Chemical Dictionary (4th ed.) (McGraw-Hill) (N.Y.) (1969), p. 431.
Humphries L. Lee
Jacobs Lewis T.
Malin Craig O.
Rockwell International Corporation
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