US4144219A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyurethane adhesive composition and use thereof
Assignee: Saint Gobain Abrasives Inc
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Filing: 1977-01-03
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Granted: 1979-03-13
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Expires: 1997-01-03
Abstract
Abstract An adhesive composition which, in the preferred aspects of the invention, is a partially cured reaction product of the composition in the form of a dried, preformed film that is heat-activatable, is provided comprising in admixture a poly-functional active hydrogen containing component consisting of, in combination, a hydroxyl terminated polyurethane polyester having a hydroxyl number no greater than about 15 and a member containing at least difunctional active hydrogen having an active hydrogen equivalent weight of at least about 27 and less than about 500, a component having available free isocyanate groups, and a fourth component such as a chlorinated aliphatic hydrocarbon, a chlorinated aromatic hydrocarbon, or an alkylated polystyrene. The partially cured, preformed adhesive film of this invention permits joint formation under pressure at relatively low temperatures and over a relatively wide temperature range, thereby making it possible to join together various materials which would otherwise present a problem in joining because of their lack of heat resistance. Joints formed have unusually high resistance to flexural fatigue.
Inventors
- 👤 John F. Malloy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:52
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/10; B; B24; B24D; B24D11/00; B24D11/06; C08L; C08L25/00; C09; C09J; C09J175/00; C09J175/04; C09J175/06; C08L2666/00; C08L2666/28; C08L2666/32; Y; Y10; Y10T; Y10T442/00; Y10T442/30; Y10T442/3854; Y10T442/3862
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
97 words
An adhesive composition comprising in admixture: (a) a hydroxy terminated polyurethane-polyester having a hydroxyl number of from about 2 to about 15; (b) an active hydrogen component containing at least difunctional active hydrogen and having an active hydrogen equivalent weight in the range of from 27 to less than about 500; (c) a component having available free isocynate groups; and (d) from about 4.8 to about 30% of a component selected from the group consisting of chlorinated aliphatic hydrocarbon, chlorinated aromatic hydrocarbon, alkylated polystyrene, and mixtures thereof, said component being miscible with components (a), (b) and (c).
Claim 2
Dependent Claim
97 words
An adhesive composition comprising in admixture: (a) a hydroxy terminated polyurethane-polyester having a hydroxyl number of from about 2 to about 15; (b) an active hydrogen component containing at least difunctional active hydrogen and having an active hydrogen equivalent weight in the range of from 27 to less than about 500; (c) a component having available free isocynate groups; and (d) from about 4.8 to about 30% of a component selected from the group consisting of chlorinated aliphatic hydrocarbon, chlorinated aromatic hydrocarbon, alkylated polystyrene, and mixtures thereof, said component being miscible with components (a), (b) and (c).
Claim 3
Dependent Claim
45 words
The adhesive composition of claim 1 wherein said (d) component is a chlorinated aliphatic hydrocarbon which is present in the composition in an amount up to about 30% by weight, based upon the weight of solids in the adhesive composition not including the aliphatic hydrocarbon.
Claim 4
Dependent Claim
45 words
The adhesive composition of claim 1 wherein said (d) component is a chlorinated aromatic hydrocarbon which is present in the composition in an amount up to about 30% by weight, based upon the weight of solids in the adhesive composition not including the aromatic hydrocarbon.
Claim 5
Dependent Claim
44 words
The adhesive composition of claim 1 wherein said (d) component is an alkylated polystyrene which is present in the composition in an amount up to about 30% by weight, based upon the weight of solids in the adhesive composition not including the alkylated polystyrene.
Claim 6
Dependent Claim
41 words
An adhesive film suitable for splicing together various lamina comprising the reaction product of the composition in claim 1 which has been at least partially cured but which can still be activated at a temperature suitable for splicing said lamina together.
Claim 7
Dependent Claim
28 words
A preformed adhesive film according to claim 5 in which said active hydrogen containing member has an active hydrogen equivalent weight of from about 67 to about 300.
Claim 8
Dependent Claim
34 words
A preformed adhesive film according to claim 6 wherein said hydroxyl terminated polyurethane polyester is the reaction product of a diisocyanate and a hydroxyl terminated polyester of a dicarboxylic acid and a polyhydric alcohol.
Claim 9
Dependent Claim
22 words
A preformed adhesive film according to claim 7 wherein the dicarboxylic acid is adipic acid and the polyhydric alcohol is butylene glycol.
Claim 10
Dependent Claim
26 words
A preformed adhesive film according to claim 8 wherein said isocyanate component is an isocyanate terminated polyurethane reaction product of a polyhydric alcohol and an isocyanate.
Claim 11
Dependent Claim
23 words
A preformed adhesive film according to claim 9 wherein said isocyanate terminated polyurethane is the reaction product of trimethylol propane and toluene diisocyanate.
Claim 12
Dependent Claim
17 words
A preformed adhesive film according to claim 5 wherein the chlorinated hydrocarbon contains 70 percent combined chlorine.
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) | 1982-03-12 | 1982-09-11 | 1983-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-03-12 | 1986-09-11 | 1987-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-03-12 | 1990-09-11 | 1991-03-13 | $7700.00 | Window Closed / Lapsed |