Metabolically acceptable polyisocyanate adhesives
US4829099A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 17, 1987 |
| Grant date | May 9, 1989 |
| Priority date | — |
| Expiry date | Jul 17, 2007 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G2230/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Metabolically-acceptable, surgical adhesives are prepared from polyisocyanates having the structral formula: ##STR1## wherein R is a polyvalent aliphatic radical of about 1 to 10 carbon atoms or a polyvalent aromatic radical of 6 to about 24 carbon atoms; PA0 A is C, S or P; PA0 Z is O or S; PA0 Y is 1 when A is C or P, and 2 when A is S; PA0 n is 1 or 2; PA0 p is at least 1; PA0 q is 0 or 1, with the proviso that when A is carbon or sulfur, q is 0; PA0 r is 0 or 1, with the proviso that when A is carbon or sulfur, r is 0; PA0 X is a residue of an organic compound having active hydrogen-containing groups; and PA0 X' is a residue of an organic compound having at least 1 active hydrogen-containing group.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.