US4987158A
Expired / Lapsed
US
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UV-curable pre-crosslinked epoxy functional silicones
Assignee: General Electric Co
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Filing: 1990-03-23
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Granted: 1991-01-22
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Expires: 2010-03-23
Abstract
Abstract UV-cured compositions comprising a precrosslinked epoxy-functional silicone and an onium salt photoinitiator are provided which have improved physical properties as compared to otherwise weak and brittle UV-cured compositions comprising non-precrosslinked epoxy-functional silicones and onium salt photoinitiators without adding fillers and without sacrificing fast, efficient UV cure speed. Such compositions are useful as conformal coatings, optical fiber coatings, and electrical encapsulation.
Inventors
- 👤 Richard P. Eckberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:16
CPC Classifications
C; C08; C08G; C08G77/00; C08G77/04; C08K; C08K5/00; C08K5/0008; C08K5/0025; C08G77/48; C08G77/50; C09; C09D; C09D183/00; C09D183/14
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
70 words
An ultraviolet radiation-curable composition, comprising (A) a pre-crosslinked epoxy-functional diorganopolysiloxane having the general formula: ##STR7## wherein E represents an epoxy-functional organic radical having from 2 to 20 carbon atoms; R is individually a lower alkyl radical having 1 to 8 carbon atoms; and x is a value of from 10 to about 200; and (B) a catalytic amount of an onium salt photocatalyst or a combination of onium salt photocatalysts.
Claim 2
Dependent Claim
70 words
An ultraviolet radiation-curable composition, comprising (A) a pre-crosslinked epoxy-functional diorganopolysiloxane having the general formula: ##STR7## wherein E represents an epoxy-functional organic radical having from 2 to 20 carbon atoms; R is individually a lower alkyl radical having 1 to 8 carbon atoms; and x is a value of from 10 to about 200; and (B) a catalytic amount of an onium salt photocatalyst or a combination of onium salt photocatalysts.
Claim 3
Dependent Claim
11 words
The composition of claim 1 wherein R is a methyl group.
Claim 4
Dependent Claim
16 words
The composition of claim 1 wherein E is derived from 4-vinylcyclohexeneoxide and has the formula: ##STR8##
Claim 5
Dependent Claim
19 words
The composition of claim 1 wherein x is a number in the range of about 40 to about 100.
Claim 6
Dependent Claim
19 words
The composition of claim 4 wherein x is a number in the range of about 50 to about 100.
Claim 7
Dependent Claim
19 words
The composition of claim 1 wherein x is a number in the range of about 10 to about 40.
Claim 8
Dependent Claim
22 words
The composition of claim 1 wherein component (B) is present in an amount in the range of about 0.5% to about 5.0%.
Claim 9
Dependent Claim
12 words
The composition of claim 1 wherein component (B) is a diaryliodonium salt.
Claim 10
Dependent Claim
12 words
The composition of claim 8 wherein component (B) has the formula ##STR9##
Claim 11
Dependent Claim
13 words
The composition of claim 8 wherein component (B) is bis(dodecyl phenyl) iodonium hexafluoroantimonate.
Claim 12
Dependent Claim
42 words
An ultraviolet radiation-curable composition, comprising (A) a pre-crosslinked epoxy-functional dimethylpolysiloxane having the general formula: ##STR10## wherein x is about 50 to about 100. and (B) about 0.5% to about 5.0% of bis(dodecylphenyl)iodonium hexafluoroantimonate or of a diaryliodonium salt having the formula: ##STR11##
Claim 13
Dependent Claim
42 words
An ultraviolet radiation-curable composition, comprising (A) a pre-crosslinked epoxy-functional dimethylpolysiloxane having the general formula: ##STR10## wherein x is about 50 to about 100. and (B) about 0.5% to about 5.0% of bis(dodecylphenyl)iodonium hexafluoroantimonate or of a diaryliodonium salt having the formula: ##STR11##
Claim 14
Independent Claim
74 words
A method for making a UV-curable composition, comprising mixing (A) a pre-crosslinked epoxy-functional diorganopolysiloxane having the general formula: ##STR12## wherein E represents an epoxy-functional organic radical having from 2 to 20 carbon atoms; R is individually a lower alkyl radical having 1 to 8 carbon atoms; and x is a value of from 10 to about 200; and (B) a catalytic amount of an onium salt photocatalyst or a combination of onium salt photocatalysts.
Claim 15
Independent Claim
74 words
A method for making a UV-curable composition, comprising mixing (A) a pre-crosslinked epoxy-functional diorganopolysiloxane having the general formula: ##STR12## wherein E represents an epoxy-functional organic radical having from 2 to 20 carbon atoms; R is individually a lower alkyl radical having 1 to 8 carbon atoms; and x is a value of from 10 to about 200; and (B) a catalytic amount of an onium salt photocatalyst or a combination of onium salt photocatalysts.
Claim 16
Dependent Claim
11 words
The method of claim 12 wherein R is a methyl group.
Claim 17
Dependent Claim
16 words
The method of claim 12 wherein E is derived from 4-vinylcyclohexeneoxide and has the formula: ##STR13##
Claim 18
Dependent Claim
19 words
The method of claim 12 wherein x is a number in the range of about 50 to about 100.
Claim 19
Dependent Claim
19 words
The method of claim 12 wherein x is a number in the range of about 10 to about 40.
Claim 20
Dependent Claim
22 words
The method of claim 12 wherein component (B) is present in an amount in the range of about 0.5% to about 5.0%.
Claim 21
Dependent Claim
13 words
The method of claim 12 wherein component (B) is bis(dodecyl phenyl) iodonium hexafluoroantimonate.
Claim 22
Independent Claim
47 words
A method for making a UV-curable composition, comprising mixing (A) a pre-crosslinked epoxy-functional dimethylpolysiloxane having the general formula: ##STR14## wherein x is about 50 to about 100. and (B) about 0.5% to about 5 0% of bis(dodecylphenyl)iodonium hexafluoroantimonate or of a diaryliodonium salt having the formula: ##STR15##
Claim 23
Independent Claim
47 words
A method for making a UV-curable composition, comprising mixing (A) a pre-crosslinked epoxy-functional dimethylpolysiloxane having the general formula: ##STR14## wherein x is about 50 to about 100. and (B) about 0.5% to about 5 0% of bis(dodecylphenyl)iodonium hexafluoroantimonate or of a diaryliodonium salt having the formula: ##STR15##
References Cited (Backward Citations)
US3300418A
Cited
US4652662A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-01-21 | 1994-07-23 | 1995-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-01-21 | 1998-07-23 | 1999-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-01-21 | 2002-07-23 | 2003-01-22 | $7700.00 | Window Closed / Lapsed |