Patent US5057571A successfully refreshed from Google Patents.
US5057571A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Disposable article construction adhesive
Assignee: HB Fuller Licensing and Financing Inc
•
Filing: 1990-10-09
•
Granted: 1991-10-15
•
Expires: 2010-10-09
Abstract
Abstract The composite articles of this invention can be made more efficiently through the use of a single adhesive having sufficient resistance to creep, sufficiently high bond strength, and a viscosity that is controllable through a range permitting it to be used for elastic attachment and in fine line, multi-line extrusion or sprayed adhesive preparation techniques.
Inventors
- 👤 David B. Malcolm
- 👤 William L. Bunnelle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:01
CPC Classifications
C; C09; C09J; C09J153/00; C09J153/02; A; A61; A61L; A61L15/00; A61L15/16; A61L15/42; A61L15/58; A61L15/585
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
166 words
A hot melt adhesive composition for the construction of disposable articles which comprises: (a) 5 to 14 wt % of a radial block copolymer having a molecular weight of at least 145,000 having the formula: (A--B).sub.n --Y wherein Y is a multivalent coupling agent, A comprises a polyvinyl substituted aromatic block, B comprises a polymeric rubbery midblock, and n comprises an integer of at least 3; (b) about 45 to 85 wt % of a compatible tackifying agent selected from the group consisting of a C 5 resin, a styrenated C 5 resin, a styrenated terpene resin, a hydrogenated C 9 resin, a rosin derivative, a styrenated terpene resin and mixtures thereof; and (c) about 5 to 35 wt % of a plasticizing oil; wherein the hot melt pressure sensitive adhesive has a static shear at 100° F. of at least 30 min., a creep resistance at 100° F. of less than about 30% and exhibits a viscosity of less than 25,000 cP at 275° F.
Claim 2
Dependent Claim
166 words
A hot melt adhesive composition for the construction of disposable articles which comprises: (a) 5 to 14 wt % of a radial block copolymer having a molecular weight of at least 145,000 having the formula: (A--B).sub.n --Y wherein Y is a multivalent coupling agent, A comprises a polyvinyl substituted aromatic block, B comprises a polymeric rubbery midblock, and n comprises an integer of at least 3; (b) about 45 to 85 wt % of a compatible tackifying agent selected from the group consisting of a C 5 resin, a styrenated C 5 resin, a styrenated terpene resin, a hydrogenated C 9 resin, a rosin derivative, a styrenated terpene resin and mixtures thereof; and (c) about 5 to 35 wt % of a plasticizing oil; wherein the hot melt pressure sensitive adhesive has a static shear at 100° F. of at least 30 min., a creep resistance at 100° F. of less than about 30% and exhibits a viscosity of less than 25,000 cP at 275° F.
Claim 3
Dependent Claim
26 words
The adhesive of claim 1 wherein A comprises a polystyrene block and B comprises a hydrogenated or non-hydrogenated polymeric block comprising butadiene, isoprene or mixtures thereof.
Claim 4
Dependent Claim
11 words
The adhesive of claim 2 wherein B comprises a polybutadiene block.
Claim 5
Dependent Claim
11 words
The adhesive of claim 2 wherein B comprises a polyisoprene block.
Claim 6
Dependent Claim
18 words
The adhesive of claim 1 wherein the plasticizing oil comprises a naphthenic, a paraffinic oil or mixtures thereof.
Claim 7
Dependent Claim
16 words
The adhesive of claim 1 wherein the viscosity comprises 5,000 to 10,000 cP at 275° F.
Claim 8
Dependent Claim
17 words
The composition of claim 1 wherein the creep resistance at 100° F. comprises about 5 to 25%.
Claim 9
Dependent Claim
15 words
The adhesive of claim 1 wherein the dynamic peel adhesion test results in substrate failure.
Claim 10
Dependent Claim
40 words
The adhesive of calm 2 wherein the adhesive additionally comprises 0.1 to 10 wt % of a linear A-B-A block copolymer wherein A comprises a polystyrene block and B comprises a polymeric rubbery midblock comprising butadiene, isoprene, or mixtures thereof.
Claim 11
Dependent Claim
40 words
The adhesive of calm 2 wherein the adhesive additionally comprises 0.1 to 10 wt % of a linear A-B-A block copolymer wherein A comprises a polystyrene block and B comprises a polymeric rubbery midblock comprising butadiene, isoprene, or mixtures thereof.
Claim 12
Dependent Claim
196 words
A hot melt pressure sensitive adhesive composition for the multi-line construction of disposable articles which consists essentially of: (a) about 5 to 14 wt % of a radial block copolymer having a molecular weight of about 185,000 to 240,000 having the formula: (A--B).sub.n --Y wherein Y is a multivalent coupling agent, A comprises a polystyrene block, B comprises a polymeric butadiene midblock, and n comprises an integer of about 3 to 5; (b) about 0.1 to 10 wt % of a linear A-B-A block copolymer wherein A is polystyrene blend and B comprises polybutadiene block or polyisoprene block; (c) about 40 to 80 wt % of a compatible tackifying agent selected from the group consisting of a C5 resin, a styrenated C5 resin, a styrenated terpene resin, a hydrogenated C 9 resin, a rosin derivative, a styrenated terpene resin and mixtures thereof; and (d) about 5 to 35 wt % of a plasticizing oil; wherein the hot melt pressure sensitive adhesive has a static shear of at least about 30 min. at 100° F., a creep resistance of at least about 30% at 100° and exhibits a viscosity of less than 15,000 cP at 275° F.
Claim 13
Dependent Claim
196 words
A hot melt pressure sensitive adhesive composition for the multi-line construction of disposable articles which consists essentially of: (a) about 5 to 14 wt % of a radial block copolymer having a molecular weight of about 185,000 to 240,000 having the formula: (A--B).sub.n --Y wherein Y is a multivalent coupling agent, A comprises a polystyrene block, B comprises a polymeric butadiene midblock, and n comprises an integer of about 3 to 5; (b) about 0.1 to 10 wt % of a linear A-B-A block copolymer wherein A is polystyrene blend and B comprises polybutadiene block or polyisoprene block; (c) about 40 to 80 wt % of a compatible tackifying agent selected from the group consisting of a C5 resin, a styrenated C5 resin, a styrenated terpene resin, a hydrogenated C 9 resin, a rosin derivative, a styrenated terpene resin and mixtures thereof; and (d) about 5 to 35 wt % of a plasticizing oil; wherein the hot melt pressure sensitive adhesive has a static shear of at least about 30 min. at 100° F., a creep resistance of at least about 30% at 100° and exhibits a viscosity of less than 15,000 cP at 275° F.
References Cited (Backward Citations)
US3239478A
Cited
GB1193626A
Cited
US3837994A
Cited
US3787531A
Cited
US3639521A
Cited
US3700633A
Cited
US3917607A
Cited
US3932327A
Cited
US3860003B1
Cited
US3860003A
Cited
US3860003B2
Cited
US4028292A
Cited
US3993613A
Cited
US4136699A
Cited
US4147580A
Cited
US4089824A
Cited
US4050462A
Cited
US4212910A
Cited
US4253461A
Cited
US4326528A
Cited
US4378445A
Cited
US4397645A
Cited
US4392862A
Cited
US4419494A
Cited
US4460364A
Cited
US4460728A
Cited
US4531945A
Cited
US4526577A
Cited
US4687478A
Cited
EP0156257A2
Cited
US4627847A
Cited
US4681793A
Cited
EP0249979A2
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-10-14 | 1995-04-15 | 1995-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-10-14 | 1999-04-15 | 1999-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-10-14 | 2003-04-15 | 2003-10-15 | $7700.00 | Window Closed / Lapsed |