Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1992-03-19
1993-09-07
Jagannathan, Vasu S.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
525227, 525319, 525903, 526329, 5263487, 623 16, C08F25510, C08L 3312, A61F 228
Patent
active
052429830
ABSTRACT:
A bone cement is prepared by synthesizing a polymeric composition comprising poly(methyl methacrylate) cross-linked by copolymerization with tris(.omega.-methacryloyl) polyisobutylene. A powder is formed from the composition, and the final cement is prepared by mixing the powder with additional methyl methacrylate in the presence of a catalyst to form a dough-like material that is polymerized in situ to yield a cement useful for orthopedic purposes. Preferred embodiments employ tris(.omega.-methacryloyl) compounds within a particular molecular weight range, and which are present in the powder in particular amounts relative to the poly(methyl methacrylate) component therein.
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Askew Michael J.
Kennedy Joseph P.
Richard Gretchen C.
Edison Polymer Innovation Corporation
Jagannathan Vasu S.
Weisz Louis J.
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