US3965060A
Expired / Lapsed
US
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Adhesive composition (case a)
Assignee: Gulf Research and Development Co
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Filing: 1974-12-26
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Granted: 1976-06-22
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Expires: 1994-12-26
Abstract
Abstract An adhesive composition consisting essentially of a styrene-butadiene block copolymer, a tackifier, a zinc salt of rosin and a hydrocarbon solvent. In a preferred embodiment the composition also contains a small amount of water.
Inventors
- 👤 Pallavoor R. Lakshmanan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:35
CPC Classifications
C; C09; C09J; C09J145/00; C09J145/02; C09J153/00; C09J153/02; C08; C08L; C08L2666/00; C08L2666/02
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
106 words
An adhesive composition consisting essentially of a styrene-butadiene block copolymer, a coumarone-indene tackifier, a solvent selected from the group consisting of aromatic hydrocarbons having from six to eight carbon atoms, aliphatic hydrocarbons having from six to eight carbon atoms, ketones having from two to four carbon atoms and esters having from two to four carbon atoms, said solvents having a boiling point between about 50° and 145° C., a zinc salt of rosin and, optionally, water wherein the components thereof are present in the following ranges: Component Weight Percent
______________________________________
Styrene-Butadiene
Block Copolymer 100
Tackifier 10-400
Solvent 100-5,000
Zinc Salt of Rosin
0.1-40
Water 0-10.
______________________________________
Claim 2
Dependent Claim
106 words
An adhesive composition consisting essentially of a styrene-butadiene block copolymer, a coumarone-indene tackifier, a solvent selected from the group consisting of aromatic hydrocarbons having from six to eight carbon atoms, aliphatic hydrocarbons having from six to eight carbon atoms, ketones having from two to four carbon atoms and esters having from two to four carbon atoms, said solvents having a boiling point between about 50° and 145° C., a zinc salt of rosin and, optionally, water wherein the components thereof are present in the following ranges: Component Weight Percent
______________________________________
Styrene-Butadiene
Block Copolymer 100
Tackifier 10-400
Solvent 100-5,000
Zinc Salt of Rosin
0.1-40
Water 0-10.
______________________________________
Claim 3
Dependent Claim
29 words
The composition of claim 1 wherein the components are present in the following ranges: Styrene-Butadiene
Block Copolymer 100
Tackifier 20-300
Solvent 500-4,000
Zinc Salt of Rosin
0.5-20
Water 0.1-5.0.
Claim 4
Dependent Claim
56 words
The composition of claim 1 wherein the styrene-butadiene block copolymer has the following general configuration: A -- B -- A wherein A is a styrene polymer block having an average molecular weight of about 5000 to about 125,000 and B is a butadiene polymer block having an average molecular weight of about 15,000 to about 250,000.
Claim 5
Dependent Claim
37 words
The composition of claim 3 wherein the styrene polymer block has an average molecular weight of about 15,000 to about 100,000 and the butadiene polymer block has an average molecular weight of about 25,000 to about 150,000.
Claim 6
Dependent Claim
27 words
The composition of claim 3 wherein the total of the terminal blocks A amount to about 20 to about 80 weight per cent of the block copolymer.
Claim 7
Dependent Claim
27 words
The composition of claim 3 wherein the total of the terminal blocks A amount to about 23 to about 50 weight per cent of the block copolymer.
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) | 1979-06-22 | 1979-12-22 | 1980-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-22 | 1983-12-22 | 1984-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-22 | 1987-12-22 | 1988-06-22 | $7700.00 | Window Closed / Lapsed |