Adducts of 3-methacroyl-2-hydroxypropyl esters with diisocyanates
US4400159A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 27, 1981 |
| Grant date | Aug 23, 1983 |
| Priority date | — |
| Expiry date | May 27, 2001 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F20/36
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Dimethacrylates are provided having the following chemical structure: ##STR1## where R.sub.1 and R.sub.2 may be the same or different and are cyclohexyl or phenyl groups which may be substituted or unsubstituted; and PA1 R.sub.3 is an aliphatic cycloaliphatic or aromatic group having 6 to 14 carbon atoms. These compounds are useful in dental material which cures to form polymers having high mechanical strength, low water sorption, resistance to staining, good color stability when exposed to short-wave radiation (e.g., sunlight) and good chemical resistance to the oral environment. Also provided are a method for polymerizing these compounds in situ on teeth and a tooth comprising polymers of these compounds.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.