Allyl 2-cyanoacrylate-based orthodontic bracket adhesive
US4134929A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 23, 1976 |
| Grant date | Jan 16, 1979 |
| Priority date | — |
| Expiry date | Jul 23, 1996 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09J4/06
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
An adhesive composition comprising Components A, B and C as follows: PA1 A. a polymerizable monomeric allyl 2-cyanoacrylate containing portion comprising PA2 1. from about 75 to about 92 parts by weight of allyl 2-cyanoacrylate; PA2 2. from about 1 to about 12 parts by weight of a difunctional monomer diester of an acid from the group consisting of acrylic and methacrylic acid and an aromatic diol; and PA2 3. from about 3 to 20 parts by weight of a thickening agent selected from poly(methylacrylate-coacrylonitrile) polymers; PA1 B. from 0.1 to 3.0 weight percent based upon the weight of component A of a hydrophobic cyclic imino initiator selected from 2,4,6-tri(allyloxy)-S-triazine, tri(alkyloxy)-S-triazines having 1 to about 20 exocyclic carbon atoms, benzoxazole and substituted benzoxazoles; and PA1 C. an amount of an organic peroxide free radical providing compound sufficient to cause cross linking of the difunctional monomer diester with the allyl 2-cyanoacrylate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.