US4742113A
Expired / Lapsed
US
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Structural adhesive compositions
Assignee: Lord Corp
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Filing: 1987-02-20
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Granted: 1988-05-03
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Expires: 2007-02-20
Abstract
Abstract Two pack structural adhesive compositions are disclosed which in addition to exhibiting long pot life and rapid cure possessing exceptional bond strength. The adhesive system comprises a mixture of organic isocyanate, a polymeric polyol comprised of a graft copolymer of poly(alkylene oxide) polyol and acrylonitrile or a acrylonitrile and styrene and a latent catalyst.
Inventors
- 👤 Thomas E. Gismond, deceased
- 👤 Dennis J. Damico
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:46
CPC Classifications
C; C09; C09J; C09J175/00; C09J175/04; C09J175/12; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/63; C08G18/632; C08G18/08; C08G18/16; C08G18/18; C08G18/20; C08G18/2045; C08G18/2063; C08G18/22; C08G18/222; Y; Y10; Y10S; Y10S528/00; Y10S528/905
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
94 words
A structural adhesive composition comprising: A. at least one organic polyisocyanate compound having at least two isocyanate groups; B. a polyol comprising at least one polymeric polyol comprising a graft copolymer of a poly(alkylene oxide) polyol and a vinyl monomer selected from acrylonitrile or a mixture of acrylonitrile and stryrene, said polyisocyanate being present in an amount sufficient to provide an NCO:OH ratio of at least 1 with respect to the hydroxyl groups; and C. a latent catalyst for the reaction of the isocyanate groups of said polyisocyanite and hydroxyl groups of said polyol.
Claim 2
Dependent Claim
94 words
A structural adhesive composition comprising: A. at least one organic polyisocyanate compound having at least two isocyanate groups; B. a polyol comprising at least one polymeric polyol comprising a graft copolymer of a poly(alkylene oxide) polyol and a vinyl monomer selected from acrylonitrile or a mixture of acrylonitrile and stryrene, said polyisocyanate being present in an amount sufficient to provide an NCO:OH ratio of at least 1 with respect to the hydroxyl groups; and C. a latent catalyst for the reaction of the isocyanate groups of said polyisocyanite and hydroxyl groups of said polyol.
Claim 3
Dependent Claim
23 words
A structural adhesive composition according to claim 1 wherein the polymeric polyol comprises a graft copolymer of a poly(alkylene oxide) polyol and acrylonitrile.
Claim 4
Dependent Claim
19 words
A structural adhesive composition according to claim 2 wherein the poly(alkylene oxide) polyol is poly(ethylene oxide-propylene oxide copolymer) polyol.
Claim 5
Dependent Claim
26 words
A structural adhesive according to claim 1 wherein the polymeric polyol is a graft copolymer of poly(alkylkene oxide) polyol and a mixture of acrylonitrile and styrene.
Claim 6
Dependent Claim
15 words
A structural adhesive composition according to claim 1 wherein the polyisocyanate is an aromatic polyisocyanate.
Claim 7
Dependent Claim
15 words
A structural adhesive composition according to claim 1 wherein the aromatic polyisocyanate is poly(methylene diphenyldiisocyanate).
Claim 8
Dependent Claim
50 words
A structural adhesive composition according to claim 1 wherein the latent catalyst is selected from the group consisting of acid-blocked or phenol-blocked salts of bicyclic amidine compounds having the structure: ##STR2## wherein m and n can be the same or different and each is an integer from 3 to 5.
Claim 9
Dependent Claim
25 words
An adhesive composition according to claim 7 wherein the salts are selected from phenol salts, mineral acid salts, sulfonic acid salts and carboxylic acid salts.
Claim 10
Dependent Claim
14 words
An adhesive composition according to claim 7 wherein the bicylic amidine is 1,8-diaza-bicyclo[5.4.0] undec-7-ene.
Claim 11
Dependent Claim
18 words
An adhesive composition according to claim 8 wherein the salt is 1,8-diaza-bicyclo[5.4.0] undec-7-ene salt of p-toluene sulfonic acid.
Claim 12
Dependent Claim
26 words
A bonded assembly comprising a sheet molded compound bonded to a fiberglass-reinforced thermoplastic with the adhesive composition of claim 1 so as to form a laminate.
Claim 13
Dependent Claim
16 words
A bonded assembly according to claim 11 wherein the adhesive composition is that of claim 2.
Claim 14
Dependent Claim
16 words
A bonded assembly according to claim 11 wherein the adhesive composition is that of claim 6.
Claim 15
Dependent Claim
16 words
A bonded assembly according to claim 11 wherein the adhesive composition is that of claim 7.
Claim 16
Dependent Claim
16 words
A bonded assembly according to claim 11 wherein the adhesive composition is that of claim 9.
Claim 17
Dependent Claim
16 words
A bonded assembly according to claim 11 wherein the adhesive composition is that of claim 10.
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) | 1991-05-03 | 1991-11-02 | 1992-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-05-03 | 1995-11-02 | 1996-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-05-03 | 1999-11-02 | 2000-05-03 | $7700.00 | Window Closed / Lapsed |