Dental adhesive materials containing fluoride compounds
US3969499A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 19, 1974 |
| Grant date | Jul 13, 1976 |
| Priority date | — |
| Expiry date | Nov 19, 1994 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K3/32
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A composition of matter comprising a polymeric reaction product of a hydroxy terminated butadiene prepolymer having an average molecular weight of about 400 to 25,000 and containing 1 to 3 hydroxyl groups per molecule and a polyisocyanate reactant present in an amount to provide from 100 to 1200 percent excess isocyanate groups to hydroxyl groups or active hydrogen sites, and from 1 to 70 percent by weight of a compound containing a fluoride ion. In another, and preferred aspect of the invention, the polyisocyanate reactant is present in an amount to provide from 1.5 to 2.7 isocyanate groups for each hydroxyl group or active hydrogen site, the composition containing an aromatic polyol, such as N,N-bis(2-hydroxypropyl) aniline, and wherein the aromatic polyol comprises at least 42 percent but not more than 60 percent of the hydroxyl components. The compositions are especially useful as dental fissure sealants and as means of applying a fluoride to a tooth surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.