US3666701A
Expired / Lapsed
US
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Copolymer bonding agent
Assignee: Phillips Petroleum Co
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Filing: 1970-09-01
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Granted: 1972-05-30
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Expires: 1990-09-01
Abstract
Abstract Copolymer bonding agents comprising in combination resinous tackifiers, organic solvents, and a conjugated diene-lactone block copolymer, applied as a solution or dispersion to provide a pressure sensitive adhesive, a solvent cement, and a laminating adhesive.
Inventors
- 👤 Oren L Marrs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:54
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/02; C08G63/06; C08G63/08; C08L; C08L67/00; C08L67/04
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
60 words
A bonding agent according to claim 1 wherein the resinous tackifier selected from the group consisting of polymerized rosin, dehydrogenated rosin, hydrogenated rosin esters of glycerol, hydrogenated rosin esters of pentaerythritol, hydrogenated rosin, esters of polymerized rosin and glycerol, maleic anhydride-modified rosin; coumarone-indene resins; partial esters of styrene-maleic acid copolymers; chlorinated biphenyls oil-soluble phenol-aldehyde resins; polyterpene resins; and mixtures thereof.
Claim 2
Dependent Claim
26 words
A bonding agent according to claim 1 wherein the resinous organic solvent is selected from the group consisting of saturated aliphatic, saturated cycloaliphatic and aromatic hydrocarbons.
Claim 3
Dependent Claim
40 words
A bonding agent according to claim 1 wherein a portion of the conjugated diene-lactone block copolymer is replaced with a conjugated diene polymer providing a weight relationship of conjugated diene polymer to conjugated diene-lactone block copolymer of up to 10:1.
Claim 4
Dependent Claim
59 words
A composition according to claim 1 wherein the resinous block copolymer is comprised of 60 percent by weight 1,3-butadiene, 20 percent by weight styrene, and 20 percent by weight epsilon -caprolactone; with the composition consisting of 1.5 parts by weight of said block copolymer, 1.0 parts by weight hydrogenated rosin ester of pentaerythritol and 10 parts by weight toluene.
Claim 5
Dependent Claim
57 words
A composition according to claim 1 wherein the resinous block copolymer is comprised of 50 percent by weight 1,3-butadiene, 25 percent by weight styrene, and 25 percent by weight epsilon -caprolactone; said composition consisting of 1.5 parts by weight of block copolymer, 1.0 parts by weight hydrogenated rosin ester of pentaerythritol, and 10 parts by weight toluene.
Claim 6
Dependent Claim
57 words
A composition according to claim 1 wherein the resinous block copolymer is comprised of 40 percent by weight 1,3-butadiene, 30 percent by weight styrene, and 30 percent by weigHt epsilon -caprolactone; with said composition consisting of 1.5 parts by weight block copolymer, 1.0 parts by weight hydrogenated rosin ester of pentaerythritol and 10 parts by weight toluene.
Claim 7
Dependent Claim
48 words
A composition according to claim 1 wherein the block copolymer is comprised of 60 percent by weight 1,3-butadiene, 20 percent by weight epsilon -caprolactone; the composition consisting of 1.33 parts by weight of said block copolymer, 1.0 parts by weight dimerized rosin, and 9.33 parts by weight toluene.
Claim 8
Dependent Claim
36 words
A bonding agent according to claim 4 wherein the combined weights of the conjugated diene-lactone block copolymer plus said conjugated diene polymer in relationship to the weight of tackifier is from about 0.05:1 to about 20:1.
References Cited (Backward Citations)
US3557252A
Cited
US3557255A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-05-30 | 1975-11-29 | 1976-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-30 | 1979-11-29 | 1980-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-30 | 1983-11-29 | 1984-05-30 | $7700.00 | Window Closed / Lapsed |