Patent US4446246A successfully refreshed from Google Patents.
US4446246A
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Catalyst systems for two-pack acrylic adhesive formulations
Assignee: ThreeBond Co Ltd
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Filing: 1982-09-09
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Granted: 1984-05-01
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Expires: 2002-09-09
Abstract
Abstract Disclosed are novel catalyst systems and method for curing a peroxide-curable ethylenically unsaturated (e.g. acrylic or vinyl) composition wherein the catalyst system is a combination of the peroxide curing agent and a Cu +1 activator or a combination of a peroxide curing agent and an activator system comprising a furfuryl alcohol and an acid catalyst. Also disclosed is a new catalyst system for curing ring compounds (e.g. epoxides) which comprises a combination of ferrocene and a diazonium salt of a Lewis acid. Preferred curable compositions are adhesives and especially acrylic adhesives and epoxy adhesives.
Inventors
- 👤 Vincent D. McGinniss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:19
CPC Classifications
C; C08; C08G; C08G65/00; C08G65/02; C08G65/04; C08G65/06; C08G65/08; C08G65/10; C08G65/12; C08F; C08F4/00; C08F4/40; C08G59/00; C08G59/18; C08G59/68; C09; C09J; C09J4/00
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
29 words
A catalyst system capable of effecting room temperature cure of a curable mixture comprising at least one ethylenically-unsaturated compound which comprises a Cu +1 activator and a peroxide initiator.
Claim 2
Dependent Claim
29 words
A catalyst system capable of effecting room temperature cure of a curable mixture comprising at least one ethylenically-unsaturated compound which comprises a Cu +1 activator and a peroxide initiator.
Claim 3
Dependent Claim
12 words
The catalyst system of claim 1 which additionally comprises a reducing agent.
Claim 4
Dependent Claim
28 words
The catalyst system of claim 2 wherein said reducing agent is selected from the group consisting of ascobic acid, sodium sulfite, sodium bisulfite, sodium metabisulfate, and mixtures thereof.
Claim 5
Dependent Claim
13 words
The catalyst system of claim 3 wherein said reducing agent is ascorbic acid.
Claim 6
Dependent Claim
23 words
The catalyst system of claim 1 wherein said Cu +1 activator is a Cu +1 olefin complex or a Cu +1 hydroxyl complex.
Claim 7
Dependent Claim
21 words
The catalyst system of claim 5 wherein said olefin of said complex is a vinyl or acrylic monomer, oligomer, or polymer.
Claim 8
Dependent Claim
68 words
The catalyst system of claim 5 wherein said olefin or said hydroxyl compound of said complex is selected from one of the following: ##STR19## where R 1 is --H, ##STR20## where R 2 is ##STR21## R 3 is --H or --CH 3 , ##STR22## where R 4 is H or a lower alkyl group, X is --O--, ##STR23## where Z is --CH 2 --CH 2 --O-- n .
Claim 9
Dependent Claim
44 words
The catalyst system of claim 1 wherein said peroxide initiator is selected from the group consisting of tert-butyl peroxide, hydrogen peroxide, benzoyl peroxide, cumene hydroperoxide, tetraline hydroperoxide, diisopropyl benzene hydroperoxide, acetyl peroxide, urea peroxide, methyl ethyl ketone peroxide, diisopropyl ether peroxide, and mixtures thereof.
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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) | 1987-05-01 | 1987-10-31 | 1988-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-05-01 | 1991-10-31 | 1992-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-05-01 | 1995-10-31 | 1996-05-01 | $7700.00 | Window Closed / Lapsed |