US3932329A
Expired / Lapsed
US
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Adhesive composition
Assignee: Baychem International Inc
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Filing: 1974-08-01
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Granted: 1976-01-13
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Expires: 1994-08-01
Abstract
Abstract An adhesive composition consisting essentially of a styrene-isoprene block copolymer, a zinc salt of rosin and a microcrystalline wax.
Inventors
- 👤 Pallavoor R. Lakshmanan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:59
CPC Classifications
C; C09; C09J; C09J193/00; C09J193/04; C09J153/00; C09J153/02; C09J191/00; C09J191/06; C08; C08L; C08L2666/00; C08L2666/02
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
46 words
An adhesive composition consisting essentially of a styrene-isoprene block copolymer, a zinc salt of rosin and a microcrystalline wax wherein the components are present in the following ranges: Component Weight Per Cent
______________________________________
Styrene-Isoprene
Block Copolymer 20-35
Zinc Salt of Rosin
20-50
Microcrystalline Wax
60-15.
______________________________________
Claim 2
Dependent Claim
46 words
An adhesive composition consisting essentially of a styrene-isoprene block copolymer, a zinc salt of rosin and a microcrystalline wax wherein the components are present in the following ranges: Component Weight Per Cent
______________________________________
Styrene-Isoprene
Block Copolymer 20-35
Zinc Salt of Rosin
20-50
Microcrystalline Wax
60-15.
______________________________________
Claim 3
Dependent Claim
32 words
The composition of claim 1 wherein the components are present in the following ranges: Component Weight Per Cent
______________________________________
Styrene-Isoprene Block
Copolymer 15-40
Zinc Salt of Rosin
15-50
Microcrystalline Wax
70-10.
______________________________________
Claim 4
Dependent Claim
56 words
The composition of claim 1 wherein the styrene-isoprene block copolymer has the following general configuration: A -- B -- A wherein A is a styrene polymer block having an average molecular weight of about 2,000 to about 100,000 and B is an isoprene polymer block having an average molecular weight of about 25,000 to about 1,000,000.
Claim 5
Dependent Claim
37 words
The composition of claim 3 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 6
Dependent Claim
27 words
The composition of claim 3 wherein the total of the terminal blocks A amount to about eight to about 50 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 10 to about 40 weight per cent of the block copolymer.
Claim 8
Dependent Claim
25 words
The composition of claim 1 wherein the zinc content of the zinc salt of rosin is from about four to about nine weight per cent.
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) | 1979-01-12 | 1979-07-14 | 1980-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-01-12 | 1983-07-14 | 1984-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-01-12 | 1987-07-14 | 1988-01-13 | $7700.00 | Window Closed / Lapsed |