Aqueous developable benzocyclobutene-based polymer composition and method of use of such compositions
View Patent ↗The invention is a composition comprising a curable arylcyclobutene based oligomer or polymer and a dissolution inhibitor which comprises a compound comprising at least two diazonaphthoquinone (DNQ) moieties each of which is pendant from different phenyl groups.
1. A composition comprising
a) an acid functionalized, curable arylcyclobutene-based polymer or oligomer,
b) a dissolution inhibitor comprising a compound of the formula:
where L is an n+1 valent linking group,
R is independently in each occurrence OH or OY provided that 40% to 80% of R are OY, where OY indicates a pendant DNQ group,
m is independently in each occurrence an integer of 1 to 3, and
n is 1 or 2.
2. The composition of claim 1 wherein the dissolution inhibitor further comprises a compound of the formula:
where L is an n+1 valent linking group,
R is independently in each occurrence OH or OY provided at least some R are OY, where OY indicates a pendant DNQ group,
m is independently in each occurrence an integer of 1 to 3, and
n is 1 or 2.
3. The composition of claim 1 wherein L is independently in each occurrence a covalent bond, S, O, C(═O), or a hydrocarbyl group of 1 to 12 carbon atoms.
4. The composition of claim 1 wherein L is a hydrocarbyl group of 1 to 12 carbon atoms.
5. The composition of claim 1 where at least about 50% of R are OY.
6. The composition of claim 2 where at least about 60% of R are OY.
7. The composition of claim 1 further comprising an organic solvent.
8. The composition of claim 7 where the solvent is a mixture of di(propylene glycol) dimethyl ether and propylene glycol methyl ether acetate.
9. The composition of claim 1 further comprising at least one antioxidant.
10. The composition of claim 1 further comprising at least one coating aid.
11. The composition of claim 1 further comprising at least one adhesion promoter.
12. The composition of claim 9 where the antioxidant is selected from 4-[[4,6-bis(octylthio)-1,3,5-triazin-2-yl]amino]-2,6-bis(1,1-dimethylethyl) -phenol, and 2,4-bis(1,1-dimethylethyl)-phenol phosphite (3:1).
13. The composition of claim 10 where the coating aid is a copolymer of the ethyl ester of 2-propenoic acid with 2-ethylhexyl 2-propenoate.
14. The composition of claim 11 where the adhesion promoter is selected from N-[2-(triethoxysilyl)propyl]maleamic acid and N-[3-(triethoxysilyl)propyl]citraconic acid.
15. The composition of claim 1 wherein the acid functionality comprises a —COOH group.
16. The composition of claim 1 wherein the dissolution inhibitor has the formula:
17. The composition of claim 16 wherein two-thirds of the R groups are OY.