US3972848A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adhesive composition
Assignee: Gulf Research and Development Co
•
Filing: 1975-07-29
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Granted: 1976-08-03
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Expires: 1995-07-29
Abstract
Abstract An adhesive composition consisting essentially of a styrene-butadiene radial block copolymer, a styrene-isoprene block copolymer, an isoprene-piperylene copolymer and an organic solvent or mixtures of organic solvents.
Inventors
- 👤 Pallavoor R. Lakshmanan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:26
CPC Classifications
C; C09; C09J; C09J109/00; C09J153/00; C09J153/02; C08; C08L; C08L2666/00; C08L2666/02; C08L2666/04; C08L2666/24; Y; Y10; Y10S; Y10S525/00; Y10S525/901
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
184 words
An adhesive composition consisting essentially of a styrene-butadiene radial block copolymer, a styrene-isoprene block copolymer, an isoprene-piperylene copolymer and an organic solvent wherein the components are present in the following ranges, assuming the presence of 100 parts by weight of the styrene-butadiene radial block copolymer in the final composition: Component Parts by Weight
______________________________________
Styrene-Isoprene
Block Copolymer 5-300
Isoprene-Piperylene
Copolymer 5-300
Solvent 50-4,000
______________________________________ , wherein the styrene-butadiene radial block copolymer has the following general configuration: (A - B).sub.x Y, with A being a styrene polymer, B a butadiene polymer, Y a group derived from a polyfunctional compound having at least three reactive sites and x is an integer ranging from three to five; the styrene-isoprene block copolymer has the following general configuration: A.sub.1 -- B.sub.1 -- A.sub.1, wherein A 1 is a styrene polymer block having an average molecular weight of about 2000 to about 100,000 and B 1 is an isoprene polymer block having an average molecular weight of 25,000 to about 1,000,000; and the melting points of the isoprene-piperylene copolymer being in the range of about 70° to about 130° C.
Claim 2
Dependent Claim
184 words
An adhesive composition consisting essentially of a styrene-butadiene radial block copolymer, a styrene-isoprene block copolymer, an isoprene-piperylene copolymer and an organic solvent wherein the components are present in the following ranges, assuming the presence of 100 parts by weight of the styrene-butadiene radial block copolymer in the final composition: Component Parts by Weight
______________________________________
Styrene-Isoprene
Block Copolymer 5-300
Isoprene-Piperylene
Copolymer 5-300
Solvent 50-4,000
______________________________________ , wherein the styrene-butadiene radial block copolymer has the following general configuration: (A - B).sub.x Y, with A being a styrene polymer, B a butadiene polymer, Y a group derived from a polyfunctional compound having at least three reactive sites and x is an integer ranging from three to five; the styrene-isoprene block copolymer has the following general configuration: A.sub.1 -- B.sub.1 -- A.sub.1, wherein A 1 is a styrene polymer block having an average molecular weight of about 2000 to about 100,000 and B 1 is an isoprene polymer block having an average molecular weight of 25,000 to about 1,000,000; and the melting points of the isoprene-piperylene copolymer being in the range of about 70° to about 130° C.
Claim 3
Dependent Claim
47 words
The composition of claim 1 wherein the components are present in the following ranges, assuming the presence of 100 parts by weight of the styrene-butadiene radial block copolymer in the final composition: Component Parts By Weight
______________________________________
Styrene-Isoprene
Block Copolymer 20-100
Isoprene-Piperylene
Copolymer 20-100
Solvent 200-800.
______________________________________
Claim 4
Dependent Claim
29 words
The composition of claim 1 wherein the styrene polymer will range from about five to about 60 weight per cent, based on the weight of the radial block copolymer.
Claim 5
Dependent Claim
29 words
The composition of claim 1 wherein the styrene polymer will range from about 10 to about 50 weight per cent, based on the weight of the radial block copolymer.
Claim 6
Dependent Claim
37 words
The composition of claim 1 wherein the styrene polymer block has an average molecular weight of about 5,000 to about 50,000 and the isoprene polymer block has an average molecular weight of about 50,000 to about 500,000.
Claim 7
Dependent Claim
28 words
The composition of claim 1 wherein the total of the terminal blocks A 1 amount to about eight to about 50 weight per cent of the block copolymer.
Claim 8
Dependent Claim
28 words
The composition of claim 1 wherein the total of the terminal blocks A 1 amount to about 10 to about 40 weight per cent of the block copolymer.
Claim 9
Dependent Claim
10 words
The composition of claim 1 wherein the solvent is toluene.
Claim 10
Dependent Claim
10 words
The composition of claim 1 wherein the solvent is hexane.
Claim 11
Dependent Claim
10 words
The composition of claim 1 wherein the solvent is acetone.
Claim 12
Dependent Claim
33 words
The composition of claim 1 wherein additionally there is present a coumarone-indene resin in an amount within the range of about 5 to about 200 weight per cent based on the isoprene-piperylene copolymer.
Claim 13
Dependent Claim
32 words
The composition of claim 1 wherein additionally there is present a coumarone-indene resin in an amount within the range about 75 to about 150 weight per cent based on the isoprene-piperylene copolymer.
References Cited (Backward Citations)
US3519585A
Cited
US3686365A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-08-03 | 1980-02-02 | 1980-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-08-03 | 1984-02-02 | 1984-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-08-03 | 1988-02-02 | 1988-08-03 | $7700.00 | Window Closed / Lapsed |