Kit of parts, method of producing and use thereof
The invention relates to a kit of parts comprising part A and part B, part A comprising a polymerizable component having an acid group in the molecule, an initiator, part B comprising an activator, and a film former with a molecular weight of at least 1000. The invention also relates to a composition obtainable by mixing the components contained in the kit of parts and to a process for producing the kit of parts comprising the steps of bringing the components contained in part B of the kit in contact with a surface, drying the surface to form a film.
1. A dental applicator comprising a film on a surface of the applicator, wherein:
the film comprises at least one activator; and
the at least one activator is dissolved in or dispersed in the film,
wherein the film is derived from a composition comprising a film former, and wherein
the film is essentially free from a solvent.
2. The applicator of claim 1 , wherein the at least one activator comprises a barbituric acid, a barbituric acid salt, a thiobarbituric acid, a thiobarbituric acid salt, a sulfinic acid, a sulfinic acid salt, or a sulfinic acid ester, or a derivative thereof.
3. The applicator of claim 1 , wherein the at least one activator is homogeneously dissolved in, or dispersed in, the film.
4. The applicator of claim 1 , wherein the film has a thickness in the range from about 0.5 μm to about 100 μm.
5. The applicator of claim 1 , wherein the film former has a molecular weight of at least 1,000.
6. The applicator of claim 1 , wherein the film is derived from a film former comprising a natural film former, a semi-synthetic film former, a cellulose derivative, a poly(meth)acrylate, a vinyl polymer, or a polyurethane, or mixtures or combinations thereof.
7. The applicator of claim 1 , wherein the applicator comprises a handle.
8. The applicator of claim 1 , wherein the applicator is selected from the group consisting of a brush, a sponge, a spatula, or a dental instrument.
9. The applicator of claim 1 , wherein the applicator comprises a brush, wherein the brush comprises bristles.
10. The applicator of claim 1 , wherein the applicator is a multiuse applicator.
11. A method of using the applicator of claim 1 , the method comprising:
contacting the film comprising the at least one activator located on the surface of the applicator with at least one polymerizable component and an initiator or initiator system to cure a hardenable composition.
12. The method of claim 11 , wherein the at least one polymerizable component comprises a polymerizable moiety comprises an acrylate, a (meth)acrylate, or an epoxide, or a combination thereof.
13. The method of claim 11 , wherein the at least one polymerizable component comprises an acid moiety.
14. The method of claim 13 , wherein the acid moiety comprises a carboxylic acid, a phosphoric acid, or a sulphonic acid, or a combination thereof.
15. The method of claim 11 , wherein the hardenable composition comprises components present in the following amounts:
one or more polymerizable components comprising an acid group: from about 2 to about 40 wt.-%;
an initiator or initiator system: from about 0.5 to about 8 wt.-%; and
one or more activators: from about 0.05 to about 2.0 wt.-%.
16. The method of claim 11 , wherein the initiator or initiator system comprises one or more of an oxidizing agent, a reducing agent, a sensitizing agent, an onium salt, or an electron donor.
17. The method of claim 11 , wherein the hardened dental material comprises an adhesive, a cement, a filling material, a crown, a bridge, a sealant, or a core build-up material, or combinations or mixtures thereof.
18. A method of making the applicator of claim 1 , the method comprising the steps of applying a film former and at least one activator to a surface of the applicator and forming a film on the surface of the applicator.
19. The method of claim 18 , wherein the forming step comprises one or more of coating, spraying, dipping, printing, drying, or freeze drying.
20. A kit comprising:
the applicator of claim 1 ; and
a polymerizable composition, the polymerizable composition comprising
at least one polymerizable component; and
an initiator or initiator system.
21. The kit of claim 20 , wherein the at least one activator is able to facilitate a hardening reaction of the at least one polymerizable component.