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US4491646A
Expired / Lapsed
US
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Aqueous hydroxyl-acrylic latex and multi-isocyanate adhesive composition
Assignee: Ashland LLC
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Filing: 1983-09-29
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Granted: 1985-01-01
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Expires: 2003-09-29
Abstract
Abstract Disclosed is an improved aqueous latex adhesive composition of the type having an aqueous latex in admixture with an organic solvent-dispersed multi-isocyanate cross-linking agent and a thickener. The improvement for a room temperature curable adhesive composition having improved water resistance comprises the curable ingredients consisting essentially of an aqueous hydroxyl functional acrylic latex which contains hydroxyl groups as its only isocyanate reactive functionality and the multi-isocyanate cross-linking agent. Desirably, fillers incorporated into the adhesive composition are formed into a filler grind prior to incorporation into the adhesive composition. The adhesive composition is especially useful as a structural adhesive in structural lamination manufacture.
Inventors
- 👤 Norma J. Gruber
- 👤 Clois E. Powell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:26
CPC Classifications
C; C09; C09J; C09J133/00; C09J133/04; C09J133/14; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/62; C08G18/6216; C08G18/622; C08G18/6225; C08G18/6229; C08L; C08L29/00; C09J175/00; C09J175/04; C08G2170/00; C08G2170/80; C08L2666/00; C08L2666/02; C08L2666/04; C08L2666/10; C08L2666/14; C08L75/00; C08L75/04; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31551; Y10T428/31591
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
63 words
In an aqueous latex adhesive composition of an aqueous latex in admixture with an organic solvent solution of multi-isocyanate cross-linking agent, and a thickener, the improvement for a room temperature-curable adhesive composition having improved water resistance which comprises the curable ingredients consisting essentially of an aqueous hydroxyl-functional acrylic latex which contains hydroxyl groups as its only isocyanate-reactive functionality and said multi-isocyanate cross-linking agent.
Claim 2
Dependent Claim
63 words
In an aqueous latex adhesive composition of an aqueous latex in admixture with an organic solvent solution of multi-isocyanate cross-linking agent, and a thickener, the improvement for a room temperature-curable adhesive composition having improved water resistance which comprises the curable ingredients consisting essentially of an aqueous hydroxyl-functional acrylic latex which contains hydroxyl groups as its only isocyanate-reactive functionality and said multi-isocyanate cross-linking agent.
Claim 3
Dependent Claim
15 words
The adhesive composition of claim 1 wherein said latex is formed from only acrylic monomers.
Claim 4
Dependent Claim
22 words
The latex of claim 2 wherein said acrylic monomers contain between about 1 and 6% by weight of a hydroxyl-bearing acrylic monomer.
Claim 5
Dependent Claim
22 words
The adhesive composition of claim 1 wherein the glass transition temperature of said latex ranges from between about -3° and +20° C.
Claim 6
Dependent Claim
18 words
The adhesive composition of claim 1 wherein said latex particle size ranges from about 3,000 to 9,000 A.
Claim 7
Dependent Claim
17 words
The adhesive composition of claim 1 which has a viscosity of between about 1,000 and 5,000 centipoises.
Claim 8
Dependent Claim
11 words
The adhesive composition of claim 1 which contains inert filler ingredients.
Claim 9
Dependent Claim
21 words
The adhesive composition of claim 4 wherein said latex is a terpolymer of butyl acrylate, methyl methacrylate, and 2-hydroxy ethyl acrylate.
Claim 10
Dependent Claim
33 words
The adhesive composition of claim 7 wherein said inert filler ingredients are formed into a grind ranging in size from between about 300 and 30,000 A prior to incorporation into said adhesive composition.
Claim 11
Dependent Claim
64 words
A method for making an aqueous latex adhesive composition of claim 1 which comprises: in an attrition mill forming a filler grind of said filler ingredients ranging in particle size from between about 300 and 30,000 A; and blending said grind with said latex, said cross-linking agent, and said thickener, the only active-hydrogen functionality in said adhesive composition comprising hydroxyl groups on said latex.
Claim 12
Dependent Claim
20 words
The method of claim 10 wherein the viscosity of said adhesive composition ranges from between about 1,000 and 5,000 centipoises.
Claim 13
Dependent Claim
41 words
The method of claim 10 wherein said latex is synthesized from only acrylic monomers, between about 1 and 6% by weight thereof bearing a hydroxyl group, the glass transition temperature of said latex ranging from between about -3° and +20° C.
Claim 14
Dependent Claim
19 words
The method of claim 12 wherein said latex comprises a terpolymer of butyl acrylate, methyl methacrylate, and 2-hydroxyethyl acrylate.
Claim 15
Dependent Claim
25 words
A composite of at least two wooden surfaces which are adhesively joined by the dried residue of an aqueous latex adhesive composition, of claim 1.
Claim 16
Dependent Claim
28 words
The composite of claim 14 wherein said latex is of acrylic monomers only wherein between 1 and 6% by weight of said acrylic monomers bears a hydroxyl group.
Claim 17
Dependent Claim
21 words
The composite of claim 15 wherein the glass transition temperature of said latex ranges from between about -3° and 20° C.
Claim 18
Dependent Claim
18 words
The composite of claim 15 wherein said latex particle size ranges from between about 3,000 and 9,000 A.
Claim 19
Dependent Claim
20 words
The composite of claim 15 wherein said latex is a terpolymer of butyl acrylate, methyl methacrylate, and 2-hydroxy ethyl acrylate.
Claim 20
Dependent Claim
14 words
The composite of claim 14 wherein said adhesive composition also contains inert filler ingredients.
Claim 21
Dependent Claim
24 words
The composite of claim 14 wherein said adhesive composition is cured at room temperature, by exposure to radio frequency or by exposure to microwaves.
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) | 1988-01-01 | 1988-07-02 | 1989-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-01-01 | 1992-07-02 | 1993-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-01-01 | 1996-07-02 | 1997-01-01 | $7700.00 | Window Closed / Lapsed |