Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Patent
1998-10-07
2000-11-28
Merriam, Andrew E. C.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Processes of preparing a desired or intentional composition...
523113, 523114, 524530, 524533, 525412, 525445, 525450, 623 16C, C08L 6706, A61K 31765, A61F 228
Patent
active
061536644
ABSTRACT:
A bioerodible cement system, which, upon mixing of the system parts, forms a cured bioerodible cement, said system comprising a first part comprising a first bioerodible polymer capable of producing acidic products upon hydrolytic degradation; and a second part comprising a second bioerodible scaffolding polymer which upon crosslinking provides a biopolymeric scaffolding or internal reinforcement for said cured cement is disclosed. In a preferred embodiment, the second bioerodible polymer comprises polypropylene fumarate (PPF), which is cross-linked during curing, desirably by a vinyl monomer such as vinyl pyrrolidone (VP) to form the biopolymeric scaffolding which provides the cured cement with dimensional and geometric stability.
REFERENCES:
patent: 4722948 (1988-02-01), Sanderson
patent: 4843112 (1989-06-01), Gerhart et al.
patent: 5644049 (1997-07-01), Giusti et al.
patent: 5645592 (1997-07-01), Nicolais et al.
Gresser Joseph D.
Hsu Y. Y.
Trantolo Debra J.
Wise Donald L.
Cambridge Scientific, Inc.
Merriam Andrew E. C.
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