US4745140A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aqueous adhesive composition containing N-vinyl lactam resin, tackifier, and ethylene/vinyl acetate emulsion stabilizer
Assignee: Chesebrough Ponds Inc
•
Filing: 1987-03-13
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Granted: 1988-05-17
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Expires: 2007-03-13
Abstract
Abstract Aqueous-based adhesive compositions having good adhesion to a non-polar polymeric surface and to cellulosic materials comprise a dispersion of an adhesive comprising an N-vinyl lactam polymeric resin, a tackifier for such adhesive, and an effective amount of an ethylene/vinyl acetate copolymer emulsion stabilizer for the resin and tackifier. Preferred N-vinyl lactam polymeric resins are vinyl pyrrolidone/vinyl acetate copolymers and a preferred class of tackifier are the rosin ester tackifiers.
Inventors
- 👤 Jagadish C. Goswami
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:04
CPC Classifications
C; C09; C09J; C09J139/00; C09J139/04; C09J139/06; C08; C08L; C08L2666/00; C08L2666/02; C08L93/00; C08L93/04
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
57 words
An aqueous adhesive composition having good adhesion to a non-polar polymeric surface and to cellulosic materials which comprises an aqueous dispersion of: (a) a N-vinyl lactam polymeric resin adhesive; (b) a tackifier for (such) said adhesive; and (c) an (effective) emulsion stabilizing amount of an ethylene/vinyl acetate copolymer emulsion stabilizer for the adhesive (a) and tackifier (b).
Claim 2
Dependent Claim
57 words
An aqueous adhesive composition having good adhesion to a non-polar polymeric surface and to cellulosic materials which comprises an aqueous dispersion of: (a) a N-vinyl lactam polymeric resin adhesive; (b) a tackifier for (such) said adhesive; and (c) an (effective) emulsion stabilizing amount of an ethylene/vinyl acetate copolymer emulsion stabilizer for the adhesive (a) and tackifier (b).
Claim 3
Dependent Claim
51 words
A composition as claimed in claim 1 wherein (a) is present at from about 10% to about 30% by weight of the composition, (b) is present at from about 10% to about 30% by weight of the composition, and (c) is present at from about 15% to about 30% by weight.
Claim 4
Dependent Claim
21 words
A composition as claimed in claim 1 wherein resin (a) is a copolymer of vinyl pyrrolidone and an ethylenically unsaturated monomer.
Claim 5
Dependent Claim
13 words
A composition as claimed in claim 3 wherein the monomer is vinyl acetate.
Claim 6
Dependent Claim
16 words
A composition as claimed in claim 1 wherein the tackifier (b) is a rosin ester tackifier.
Claim 7
Dependent Claim
53 words
A composition as claimed in claim 1 which comprises from about 10% to about 30%, by weight, of a copolymer of vinyl pyrrolidone and an ethylenically unsaturated monomer, from about 10% to about 30%, by weight, of rosin ester tackifier, and from about 15% to about 30%, by weight, of ethylene/vinyl acetate copolymer.
Claim 8
Dependent Claim
34 words
A composition as claimed in claim 6 which comprises an aqueous/alcohol dispersion medium in an amount of from about 25% to about 60%, by weight, with the remainder being the adhesive agent dispersed therein.
References Cited (Backward Citations)
JPS4948736A
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US3891584A
Cited
US4296017A
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US4425405A
Cited
JPS57108174A
Cited
US4331576A
Cited
US4345349A
Cited
US4472537A
Cited
DD230008A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-05-17 | 1991-11-16 | 1992-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-05-17 | 1995-11-16 | 1996-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-05-17 | 1999-11-16 | 2000-05-17 | $7700.00 | Window Closed / Lapsed |