US5143884A
Expired / Lapsed
US
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Acrylic adhesive composition and organoboron initiator system
Assignee: National Starch and Chemical Investment Holding Corp
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Filing: 1991-12-19
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Granted: 1992-09-01
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Expires: 2011-12-19
Abstract
Abstract A two-part initiator system useful in acrylic adhesive compositions comprising in one-part a stable organoboron amine complex and in the second part an organic acid destabilizer or activator. This initiator is particularly useful in elastomeric acrylic adhesive compositions and provides a fast, room temperature cure with good stability and exhibiting both high tensile strength and high peel strength.
Inventors
- 👤 Martin M. Skoultchi
- 👤 Nicholas V. Merlo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:37
CPC Classifications
C; C09; C09J; C09J4/00
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
112 words
A two-part initiator composition comprising: A) a stabilized organoboron amine complex of the formula: ##STR14## where R, R 1 and R 2 are alkyl of 1 to 10 carbon atoms or phenyl, R 3 and R 4 are hydrogen or alkyl of 1 to 10 carbon atoms, or ##STR15## where R 5 and R 6 are hydrogen or alkyl of 1 to 10 carbon atoms, m is 2 to 10 and n is 1 to 6, and B) an effective destabilizing amount of an organic acid activator having the formula: R--COOH where R is H, alkyl or alkenyl of 1 to 8 carbon atoms or aryl of 6 to 10 carbon atoms.
Claim 2
Dependent Claim
112 words
A two-part initiator composition comprising: A) a stabilized organoboron amine complex of the formula: ##STR14## where R, R 1 and R 2 are alkyl of 1 to 10 carbon atoms or phenyl, R 3 and R 4 are hydrogen or alkyl of 1 to 10 carbon atoms, or ##STR15## where R 5 and R 6 are hydrogen or alkyl of 1 to 10 carbon atoms, m is 2 to 10 and n is 1 to 6, and B) an effective destabilizing amount of an organic acid activator having the formula: R--COOH where R is H, alkyl or alkenyl of 1 to 8 carbon atoms or aryl of 6 to 10 carbon atoms.
Claim 3
Dependent Claim
57 words
The composition of claim 1 wherein in the organoboron amine complex, R, R 1 and R 2 are alkyl of 1 to 4 carbons, R 3 , R 4 and R 5 are hydrogen or alkyl of 1 to 4 carbon atoms, R 6 is hydrogen, m is 2 to 6 and n is 1 to 2.
Claim 4
Dependent Claim
35 words
The composition of claim 2 wherein the R group of the organic acid of Part B is an alkyl or alkenyl group of 1 to 4 carbons or an aryl of 6 to 8 carbons.
Claim 5
Dependent Claim
20 words
The composition of claim 3 wherein from about 0.1:1 to 200:1 parts by weight acid to amine complex are used.
Claim 6
Dependent Claim
15 words
The composition of claim 4 wherein the second part B) also contains a hydroperoxy compound.
Claim 7
Dependent Claim
34 words
The composition of claim 5 wherein the hydroperoxy compound has the formula R--OOH, where R is hydrogen, alkyl of 1 to 10 carbon atoms or aryl or alkaryl of 6 to 14 carbon atoms.
Claim 8
Dependent Claim
20 words
The composition of claim 5 wherein the complex is a combination of tributyl boron and ethylene diamine or propylene diamine.
References Cited (Backward Citations)
US3275611A
Cited
US3525727A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1995-09-01 | 1996-03-02 | 1996-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-09-01 | 2000-03-02 | 2000-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-09-01 | 2004-03-02 | 2004-09-01 | $7700.00 | Window Closed / Lapsed |