Patent US4680333A successfully refreshed from Google Patents.
US4680333A
Expired / Lapsed
US
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Removable hot melt pressure sensitive adhesive
Assignee: Ingredion Inc
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Filing: 1986-04-14
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Granted: 1987-07-14
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Expires: 2006-04-14
Abstract
Abstract Hot melt adhesive compositions prepared from styrene-isoprene-styrene block copolymers, a low softening point highly aliphatic resin and a metallic salt of a fatty acid exhibit a superior balance of properties in that they adhere well to a variety of substrates yet can be readily and cleanly removed when desired.
Inventors
- 👤 Irwin J. Davis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 06:26
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/09; C08K5/098; C09; C09J; C09J153/00; C09J153/02; C08L; C08L2666/00; C08L2666/02
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
119 words
A removeable pressure sensitive hot melt adhesive composition consisting essentially of: (a) 25 to 50% by weight of an A-B-A block copolymer where the A component is styrene or a homologue thereof and the B component is isoprene; (b) 20 to 50% by weight of a substantially aliphatic hydrocarbon resin having a softening point less than about 30 C; (c) 0 to 30% by weight of a substantially aliphatic hydrocarbon resin having a softening point of about 80 to 150 C; (d) 0 to 25% by weight of mineral oil or petrolatum; (e) 0.25 to 3% by weight of a metallic salt of a C 14 to C 19 fatty acid; and (f) 0.2 to 2% of an antioxidant.
Claim 2
Dependent Claim
119 words
A removeable pressure sensitive hot melt adhesive composition consisting essentially of: (a) 25 to 50% by weight of an A-B-A block copolymer where the A component is styrene or a homologue thereof and the B component is isoprene; (b) 20 to 50% by weight of a substantially aliphatic hydrocarbon resin having a softening point less than about 30 C; (c) 0 to 30% by weight of a substantially aliphatic hydrocarbon resin having a softening point of about 80 to 150 C; (d) 0 to 25% by weight of mineral oil or petrolatum; (e) 0.25 to 3% by weight of a metallic salt of a C 14 to C 19 fatty acid; and (f) 0.2 to 2% of an antioxidant.
Claim 3
Dependent Claim
33 words
The adhesive composition of claim 1 wherein there is additionally present up to about 30% by weight of a substantially aliphatic hydrocarbon resin having a softening point of about 80° to 150° C.
Claim 4
Dependent Claim
22 words
The adhesive composition of claim 1 wherein there is additionally present up to about 25% by weight of mineral oil or petrolatum.
Claim 5
Dependent Claim
22 words
The adhesive composition of claim 1 wherein the A-B-A copolymer is a styrene-isoprene-styrene copolymer containing from 10 to 35% by weight styrene.
Claim 6
Dependent Claim
21 words
The adhesive composition of claim 4 wherein the A-B-A copolymer is a styrene-isoprene-styrene copolymer containing 14 to 25% by weight styrene.
Claim 7
Dependent Claim
21 words
The adhesive composition of claim 1 wherein the A-B-A copolymers is present in an amount of 30 to 40% by weight.
Claim 8
Dependent Claim
18 words
The adhesive composition of claim 1 wherein the metallic salt is a salt of stearic or oleic acid.
Claim 9
Dependent Claim
16 words
The adhesive composition of claim 1 wherein the metallic salt is calcium stearate or zinc stearate.
Claim 10
Dependent Claim
21 words
The adhesive composition of claim 1 wherein the metallic salt is present in an amount of 0.5 to 1.5% by weight.
Claim 11
Dependent Claim
33 words
The adhesive composition of claim 2 wherein the hydrocarbon resin is selected from the group consisting of C 5 synthetic terpene resins, terpene resins derived from alpha or beta-pinene, dipentene, d-limonene, and isoprene.
Claim 12
Dependent Claim
21 words
The adhesive composition of claim 2 wherein the hydrocarbon resin is present in an amount of 20 to 25% by weight.
Claim 13
Dependent Claim
16 words
The adhesive composition of claim 3 wherein the mineral oil is a paraffinic or naphthenic oil.
Claim 14
Dependent Claim
22 words
The adhesive composition of claim 3 wherein the oil or petrolatum is present in an amount of 10 to 20% by weight.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-07-13 | 1991-01-12 | 1991-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-07-13 | 1995-01-12 | 1995-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-07-13 | 1999-01-12 | 1999-07-14 | $7700.00 | Window Closed / Lapsed |