US4374751A
Expired / Lapsed
US
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Polymerization initiator compositions
Assignee: General Electric Co
•
Filing: 1980-08-08
•
Granted: 1983-02-22
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Expires: 2000-08-08
Abstract
Abstract Improved polymerization initiators are described. The combination of radiation sensitive sulfonium or iodonium salts of a Bronsted Acid with an activating peroxide compound may be employed to effect epoxide polymerization.
Inventors
- 👤 Charles D. Dudgeon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:10
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/68; C08G59/14; C08G59/1433; C08G59/1438; C08G59/145
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
93 words
A composition comprising an admixture of a polymerization initiator which is a radiation sensitive onium salt having the formula: [[R.sub.A X].sub.b.sup.+ [C].sup.-b ](R.sub.a X).sub.b.sup.+ (C).sup.-b wherein: each R is a monovalent organic aromatic radical; X is selected from the group consisting of sulfur and iodine; C is a Bronsted Acid polymerization catalyst precursor; a equals the absolute value of (the valence number of X minus 1); and b equals the absolute value of the valence number of C; in combination with an amount of a peroxide compound effective to activate said polymerization initiator.
Claim 2
Dependent Claim
93 words
A composition comprising an admixture of a polymerization initiator which is a radiation sensitive onium salt having the formula: [[R.sub.A X].sub.b.sup.+ [C].sup.-b ](R.sub.a X).sub.b.sup.+ (C).sup.-b wherein: each R is a monovalent organic aromatic radical; X is selected from the group consisting of sulfur and iodine; C is a Bronsted Acid polymerization catalyst precursor; a equals the absolute value of (the valence number of X minus 1); and b equals the absolute value of the valence number of C; in combination with an amount of a peroxide compound effective to activate said polymerization initiator.
Claim 3
Dependent Claim
11 words
The composition of claim 1, wherein C is hexafluoroantimonate or hexafluororarsenate.
Claim 4
Dependent Claim
26 words
The composition of claim 1, wherein the peroxide is an organic compound present in an amount which is at least 10% by weight of the initiator.
Claim 5
Dependent Claim
12 words
The composition of claim 1, wherein each R is a phenyl radical.
Claim 6
Dependent Claim
12 words
The composition of claim 1, wherein C is BF 4 - .
Claim 7
Dependent Claim
12 words
The composition of claim 1, wherein C is PF 6 - .
Claim 8
Dependent Claim
12 words
The composition of claim 1, wherein C is FeCl 4 - .
Claim 9
Dependent Claim
12 words
The composition of claim 1, wherein C is SnCl 6 - .
Claim 10
Dependent Claim
12 words
The composition of claim 1, wherein C is BiCl 4 -2 .
Claim 11
Dependent Claim
12 words
The composition of claim 1, wherein C is AlF 6 -3 .
Claim 12
Dependent Claim
12 words
The composition of claim 1, wherein C is GaCl 4 - .
Claim 13
Dependent Claim
12 words
The composition of claim 1, wherein C is InF 4 - .
Claim 14
Dependent Claim
12 words
The composition of claim 1, wherein C is TiF 6 -2 .
Claim 15
Dependent Claim
12 words
The composition of claim 1, wherein C is ZrF 6 - .
Claim 16
Dependent Claim
12 words
The composition of claim 1, wherein C is AsF 6 - .
Claim 17
Dependent Claim
12 words
The composition of claim 1, wherein C is SbF 6 - .
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-02-21 | 1986-08-23 | 1987-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-02-21 | 1990-08-23 | 1991-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-02-21 | 1994-08-23 | 1995-02-22 | $7700.00 | Window Closed / Lapsed |