Hydrolytically degradable hydrophilic gels and the method for pr

Details Hydrolytically degradable hydrophilic gels and the method for pr Hydrolytically degradable hydrophilic gels and the method for pr

1990-12-19

1992-06-23

Schofer, Joseph L.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526304, 526263, 526271, 526220, 526222, 524916, C08F 206, C08F22610

Patent

active

051244217

ABSTRACT:
The solution pertains to hydrolytically degradable hydrophilic gels consisting of the individual chains of hydrophilic polymer interconnected with crosslinks containing the structure ##STR1## The method for preparation of the hydrolytically degradable gels consists in subjecting hydrophilic monomers or their mixture to the radical polymerization or copolymerization, or to copolymerization with hydrophobic monomers, in the presence of a new compound--N,O-dimethacryloylhydroxylamine--as a crosslinking agent, and, if desired, in the presence of a solvent, whereas the amount of hydrophilic monomers is 50 to 99.8 molar percent related to all monomers present.

REFERENCES:
Chem. Abstr. 101 (16): 131205x.
Chem. Abstr. 94: 42706.
J. Biomater. Sci Polymer Edn, vol. 3, No. 1, 2612-278 (1990) Subr V. Duncan R., Kopecek J. "Release of Macromolecules and Daunomycin from Hydrophilic Gels Containing Enzymatically Degradable Bonds. VI. Hydrophilic Gelscleavable by Chymotrypsin".
Makromol. Chem. 191, 1887-1897 (1990) Pradny M., Kopecek J. "Poly(acrylic Acid)-Co-(Butyl Acrylate) Crosslinked with 4,4-Bis(Methacryloylamino) Azobenzene".
Makromol. Chem. 178, 2515-2526 (1977) Braun D., Bredlein W., Jung Chul Jin "Vernetyte Polymers mit Spaltbaren Netzbrucken, Homopolymerisation vol. 4-Vinylbenzoesaureanhydrid".

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