Patent US4833193A successfully refreshed from Google Patents.
US4833193A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Novel pressure sensitive adhesives
Assignee: HB Fuller Co
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Filing: 1987-08-14
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Granted: 1989-05-23
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Expires: 2007-08-14
Abstract
Abstract This invention relates to relatively thick pressure sensitive adhesive films comprising a homogeneous mixture based on 100% of the solids weight of the adhesive film, (i) at least 20 weight % of a low molecular weight resin produced by the polymerization and hydrogenation of styrenic monomer feedstock having a ring and ball softening point of about 10°-45° C., (ii) from about 2 to about 40 weight % of a triblock copolymer with a saturated elastomeric block in the center and a thermoplastic block on each end alone or in combination with a diblock copolymer of a hard thermoplastic block and a saturated, soft ethylene-propylene polymeric block, and (iii) up to about 80 weight % of a mineral oil.
Inventors
- 👤 David L. Sieverding
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:23
CPC Classifications
C; C09; C09J; C09J125/00; C09J125/02; C09J153/00; C09J7/00; C09J7/10; C08; C08L; C08L2666/00; C08L2666/02; C08L2666/04; C08L2666/24; C08L2666/28; Y; Y10; Y10T; Y10T428/00; Y10T428/28; Y10T428/2852; Y10T428/2878; Y10T428/2896
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
130 words
Adhesive films, at least 1 mil thick, comprising an essentially homogeneous mixture containing, based on 100% of the solids weight of the adhesive, (i) at least 20 weight % of a low molecular weight resin produced by the polymerization and hydrogenation of styrenic monomer feedstock having a ring and ball softening point of about 10°-45° C., (ii) from about 2 to about 40 weight % of a triblock copolymer of an ethylene-1-butylene copolymer elastomer containing polystyrene end polymer groups having a styrene polymer or oligomer block to ethylene-butylene rubber block weight ratio of about 0.45 to about 0.55 alone or in combination with a diblock copolymer of a hard thermoplastic block and a saturated, soft ethylene-propylene polymeric block, and (iii) up to about 80 weight % of a mineral oil.
Claim 2
Dependent Claim
130 words
Adhesive films, at least 1 mil thick, comprising an essentially homogeneous mixture containing, based on 100% of the solids weight of the adhesive, (i) at least 20 weight % of a low molecular weight resin produced by the polymerization and hydrogenation of styrenic monomer feedstock having a ring and ball softening point of about 10°-45° C., (ii) from about 2 to about 40 weight % of a triblock copolymer of an ethylene-1-butylene copolymer elastomer containing polystyrene end polymer groups having a styrene polymer or oligomer block to ethylene-butylene rubber block weight ratio of about 0.45 to about 0.55 alone or in combination with a diblock copolymer of a hard thermoplastic block and a saturated, soft ethylene-propylene polymeric block, and (iii) up to about 80 weight % of a mineral oil.
Claim 3
Dependent Claim
55 words
The adhesive film of claim 1 wherein the adhesive film is a fashion adhesive film and the low molecular weight resin comprises at least 75 weight % of the adhesive film and the triblock copolymer alone or in combination with the diblock copolymer comprises about 2 to about 10 weight % of the adhesive film.
Claim 4
Dependent Claim
20 words
The adhesive film of claim 2 wherein the mineral oil comprises less than 30 weight % of the adhesive film.
Claim 5
Dependent Claim
22 words
The adhesive film of claim 3 wherein the mineral oil comprises about 2 to about 20 weight % of the adhesive film.
Claim 6
Dependent Claim
26 words
The adhesive film of claim 3 wherein the mineral oil has a viscosity of about 200 to about 1,200 Saybolt Universal seconds, determined at 38° C.
Claim 7
Dependent Claim
24 words
The adhesive film of claim 1 wherein the adhesive film is a repair adhesive film and is free of mineral oil as an additive.
Claim 8
Dependent Claim
16 words
The adhesive film of claim 4 wherein a diblock copolymer is provided in the adhesive film.
Claim 9
Dependent Claim
34 words
The adhesive film of claim 2 wherein there is present a solvent in the amount such that the solids content of the solvent containing adhesive film is about 20 to about 80 weight percent.
Claim 10
Dependent Claim
19 words
The adhesive film of claim 8 wherein the solvent is from the class of halogenated hydrocarbons and terpene hydrocarbons.
Claim 11
Dependent Claim
15 words
The adhesive film of claim 9 wherein the solvent is one of 1,1,1-trichloroethane and dipentene.
Claim 12
Dependent Claim
15 words
The adhesive film of claim 1 wherein the triblock copolymer is a styrene-ethylene-butylene-styrene block copolymer.
Claim 13
Dependent Claim
66 words
The adhesive film of claim 1 in the form of one of a solvent borne fashion adhesive film, a hot melt coated film on a decorative object, a pin-free adhesive board, a high strength adhesive for difficult to bond surfaces, a facemask and hairpiece pressure sensitive adhesive, a small appliance and instrument holder, a compression load adhesive, and a resealable film for closure and pneumatic membranes.
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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) | 1992-05-22 | 1992-11-21 | 1993-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-05-22 | 1996-11-21 | 1997-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-05-22 | 2000-11-21 | 2001-05-23 | $7700.00 | Window Closed / Lapsed |