Adducts of 1,4-bis[(3-Methacroyl-2-hydroxypropoxy)methyl]cyclohexane and derivatives thereof with isocyanates
US4406625A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 6, 1982 |
| Grant date | Sep 27, 1983 |
| Priority date | — |
| Expiry date | Jul 6, 2002 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F20/30
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Dimethacrylates are provided having the following chemical structure: ##STR1## where ##STR2## is a saturated, 6 membered, monocyclic, hydrocarbyl ring system; R.sub.1, R.sub.2 and R.sub.3 are the same or different and are hydrogen or alkyl or alkoxy groups having 1 to 12 carbon atoms; and PA1 R.sub.4 and R.sub.5 are the same or different and are hydrogen or groups of the formula: ##STR3## where R.sub.6 is an aliphatic, aromatic or cycloaliphatic group having 1 to 14 carbon atoms, provided that at least one of the groups R.sub.4 and R.sub.5 is a group of the formula: ##STR4## 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 this compound in situ on teeth and a tooth comprising a polymer of this compound.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.