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US5376746A
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Acrylic adhesive composition and organoboron initiator system
Assignee: National Starch and Chemical Investment Holding Corp
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Filing: 1993-10-15
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Granted: 1994-12-27
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Expires: 2013-10-15
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 aldehyde destabilizer or activator. This initiator is particularly useful in elastomeric acrylic adhesive compositions and provides room temperature, relatively slow curing systems with good adhesive properties making them useful in applications where longer open times are required.
Inventors
- 👤 Martin M. Skoultchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:10
CPC Classifications
C; C09; C09J; C09J4/00; C08; C08F; C08F291/00; C08F4/00; C08F4/42; C08F4/44; C08F4/52; C09J4/06; H; H05; H05K; H05K3/00; H05K3/38; H05K3/386; Y; Y10; Y10S; Y10S525/00; Y10S525/939; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31855
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
114 words
A two-part initiator composition comprising: A) a stabilized organoboron amine complex of the formula: ##STR16## 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 ##STR17## 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 aldehyde activator having the formula: ##STR18## where R is alkyl of 1 to 10 carbon atoms or aryl of 6 to 10 carbon atoms and x is 1 to 2.
Claim 2
Dependent Claim
114 words
A two-part initiator composition comprising: A) a stabilized organoboron amine complex of the formula: ##STR16## 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 ##STR17## 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 aldehyde activator having the formula: ##STR18## where R is alkyl of 1 to 10 carbon atoms or aryl of 6 to 10 carbon atoms and x is 1 to 2.
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
36 words
The composition of claim 2 wherein the R group of the aldehyde of Part B is an alkyl group of 1 to 4 carbons or an aryl of 6 to 8 carbons and x is 1.
Claim 5
Dependent Claim
33 words
The composition of claim 3 wherein the R group of the aldehyde is an aryl group and wherein from about 0.5:1 to 20:1 parts by weight of aldehyde 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 triethyl boron and ethylene diamine or propylene diamine.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-12-26 | 1998-06-27 | 1998-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-12-26 | 2002-06-27 | 2002-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-12-26 | 2006-06-27 | 2006-12-27 | $7700.00 | Window Closed / Lapsed |