Urethane modified orthodontic adhesive
US4554336A · kind A · utility
13Cited by
6References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 28, 1983 |
| Grant date | Nov 19, 1985 |
| Priority date | — |
| Expiry date | Oct 28, 2003 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K6/30
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A trifunctional methacrylate or acrylic terminated urethane resin of the following chemical structure: ##STR1## Where: R.sub.1 is --H, --CH.sub.3, --CH.sub.2 CH.sub.3, or --CH.sub.2 CH.sub.2 CH.sub.3, PA1 R.sub.2 is (--CH.sub.2 CH.sub.2 --O--).sub.n or ##STR2## where: n=2 to 10, R.sub.3 is a divalent organic radical obtained by removal of two isocyanato groups from an organic diisocyanate, PA1 R.sub.4 is methylene, ethylene or propylene, and PA1 R.sub.5 is --H, or --CH.sub.3.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.