EP0222582A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Epoxy siloxy U.V. curable polymeric composition
Assignee: Uvexs Inc
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Filing: 1986-11-04
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Granted: —
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Expires: 2006-11-04
Abstract
Abstract A composition of cationically curable epoxy resin and a polyorganosiloxane having carbon bonded hydroxyl functional groups bonded to the silicon atoms through a silicon-carbon bond cure when exposed to ultraviolet radiation when catalyzed with a photosensitive aromatic onium salt. These compositions cure rapidly, have improved flexibility compared to epoxy resins, and are useful to provide protective coatings for substrates.
Inventors
- 👤 Allen Brent Puder
- 👤 William Edward Willy
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-29 14:17
CPC Classifications
C; C08; C08F; C08F283/00; C08F283/12; C08F283/122; C08F283/10; C08G; C08G59/00; C08G59/18; C08G59/68; C08L; C08L63/00; C08L83/00; C08L83/04; C08L83/06
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
61 words
A composition curable by exposure to ultraviolet radiation comprising (A) a cationically curable organic epoxide having at least two epoxy groups per molecule, (B) a polyorganosiloxane having at least two hydroxyl-functional polyether groups bonded to the polyorganosiloxane through a silicon-carbon bond, and (C) a photosensitive aromatic onium salt, and (D) an acrylate resin having at least one acrylate group per molecule.
Claim 2
Dependent Claim
61 words
A composition curable by exposure to ultraviolet radiation comprising (A) a cationically curable organic epoxide having at least two epoxy groups per molecule, (B) a polyorganosiloxane having at least two hydroxyl-functional polyether groups bonded to the polyorganosiloxane through a silicon-carbon bond, and (C) a photosensitive aromatic onium salt, and (D) an acrylate resin having at least one acrylate group per molecule.
Claim 3
Dependent Claim
95 words
The composition according to claim 1 in which the epoxide of (A) is present in an amount of from 35 to 80 percent by weight, the siloxane of (B) is present in an amount of from 20 to 65 percent by weight, and the acrylate resin is present in an amount of from 5 to 45 parts by weight based on 100 parts by weight of the combined weight of (A) and (B) where the weight percentages of (A) and (B) are based on the combined weight of (A) and (B) present in the composition.
Claim 4
Dependent Claim
17 words
The composition according to claim 1 in which the epoxide of (A) is a cycloaliphatic epoxy resin.
Claim 5
Dependent Claim
32 words
The composition according to claim 3 in which the siloxane of (B) is a polymethylsiloxane and the hydroxyl-functional polyether groups are hydroxyl terminated polyoxyethylene bonded to silicon atoms through a propylene radical.
Claim 6
Dependent Claim
15 words
The composition according to claim 4 in which the cycloaliphatic epoxy resin has the formula
Claim 7
Dependent Claim
14 words
The composition according to claim 5 in which the acrylate resin has the formula
Claim 8
Dependent Claim
27 words
The composition according to claim 6 in which the photosensitive aromatic onium salt is a 50 percent solution of a triaryl sulfonium salt dissolved in propylene carbonate.
Claim 9
Dependent Claim
10 words
The composition according to claim 1 further comprising a photoinitiator.
Claim 10
Dependent Claim
12 words
The composition according to claim 8 in which the photoinitiator is diethoxyacetophenone.
Claim 11
Dependent Claim
10 words
The composition according to claim 2 further comprising a photoinitiator.
Claim 12
Dependent Claim
12 words
The composition according to claim 10 in which the photoinitiator is diethoxyacetophenone.
Claim 13
Dependent Claim
10 words
The composition according to claim 7 further comprising a photoinitiator.
Claim 14
Dependent Claim
12 words
The composition according to claim 12 in which the photoinitiator is diethoxyacetophenone.
Claim 15
Dependent Claim
33 words
The composition according to claim 1 in which the acrylate resin is a blend of two acrylate resins where one acrylate resin has the formula and the other acrylate resin is a triacrylate.
Claim 16
Dependent Claim
17 words
The composition according to claim 14 in which the epoxide of (A) is a cycloaliphatic epoxy resin.
Claim 17
Dependent Claim
15 words
The composition according to claim 15 in which the cycloaliphatic epoxy resin has the formula
Claim 18
Dependent Claim
27 words
The composition according to claim 16 in which the photosensitive aromatic onium salt is a 50 percent solution of a triaryl sulfonium salt dissolved in propylene carbonate.
Claim 19
Dependent Claim
10 words
The composition according to claim 17 further comprising a photoinitiator.
Claim 20
Dependent Claim
12 words
The composition according to claim 18 in which the photoinitiator is diethoxyacetophenone.
Claim 21
Dependent Claim
27 words
The composition according to claim 2 further comprising an organic compound having at least one carbon bonded hydroxyl group and being composed of carbon, hydrogen, and oxygen.
Claim 22
Dependent Claim
48 words
The composition according to claim 20 in which the organic compound is a blend of HOCH₂CH=CHCH₂OH and HOCH₂C≡CCH₂OH where the blend is present in an amount of from 1 to 10 parts by weight based on 100 parts by weight of the combined weight of (A) and (B).
Claim 23
Dependent Claim
35 words
The composition according to claim 20 in which the organic compound is furfuryl alcohol present in an amount of from 0.1 to 20 parts by weight based on the combined weight of (A) and (B).
Claim 24
Dependent Claim
42 words
The composition according to claim 20 in which the organic compound has the formula which is present in an amount of from 1 to 20 parts by weight based on 100 parts by weight of the combined weight of (A) and (B).
References Cited (Backward Citations)
No citation records indexed.
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