The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 27, 1984
Filed:
Sep. 02, 1982
Applicant:
Inventors:
Francis E Gould, Princeton, NJ (US);
Christian W Johnston, Neshanic Station, NJ (US);
Assignee:
Tyndale Plains-Hunter, Ltd., Princeton, NJ (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C08F / ; C08L / ;
U.S. Cl.
CPC ...
525127 ; 424 52 ; 424 53 ; 424 62 ; 424 63 ; 521905 ; 525454 ; 525455 ; 528 75 ; 528904 ;
Abstract
Polyurethane diacrylate compositions are obtained by reacting a diacrylate in the presence of from about 65 to about 95 weight percent of a hydrophilic polyurethane resin. The compositions will form a hydrogel upon immersion in water and are permeable to gases, ions and other low molecular weight species. The hydrophilic polyurethane diacrylate compositions may be molded to form shaped products that are dimensionally stable after repeated exposure to boiling water and exhibit memory. The compositions are useful as carriers for pharmacologically active agents in forming an oral delivery system.