Patent US1827051A successfully refreshed from Google Patents.
US4413080A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water-dispersible pressure-sensitive adhesive and tape made therewith
Assignee: 3M Co
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Filing: 1982-06-21
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Granted: 1983-11-01
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Expires: 2002-06-21
Abstract
Abstract Water-dispersible pressure-sensitive adhesive useful for splicing carbonless paper without deactivating its color-generating system. Certain acrylate:acrylic acid copolymers are blended with acidic rosin or rosin derivative, partially neutralized with KOH in combination with NaOH and/or LiOH, and plasticized with an oily water-soluble polyoxyethylene compound. Repulpable splicing tapes can be made with the adhesive.
Inventors
- 👤 Frederick D. Blake
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:27
CPC Classifications
C; C09; C09J; C09J193/00; C09J193/04; C09J133/00; C09J133/04; C09J133/06; C09J133/08; C09J7/00; C09J7/20; C09J7/21; C09J7/30; C09J7/38; C08; C08L; C08L2666/00; C08L2666/02; C08L71/00; C08L71/02; C09J2301/00; C09J2301/30; C09J2301/302; Y; Y10; Y10T; Y10T428/00; Y10T428/28; Y10T428/2852; Y10T428/2857; Y10T428/2878; Y10T428/2891
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
121 words
Normally tacky and pressure-sensitive water-dispersible adhesive comprising the blended reaction product of (a) 100 parts by weight of a copolymer of monomers consisting essentially of (1) about 75-85 weight percent of at least one monomeric acrylic acid ester of nontertiary alkyl alcohol, and, correspondingly, (2) about 25-15 weight percent of vinyl carboxylic acid, (b) about 35-100 parts by weight of acidic rosin or rosin derivative, (c) sufficient potassium hydroxide to neutralize about 30-45% of the combined carboxyl groups of the copolymer and rosin or rosin derivative, (d) sufficient sodium hydroxide, lithium hydroxide, or a combination of sodium and lithium hydroxide to neutralize about 20-45% of said carboxyl groups, and (e) about 100-225 parts by weight of oily plasticizing water-soluble polyoxyethylene compound.
Claim 2
Dependent Claim
121 words
Normally tacky and pressure-sensitive water-dispersible adhesive comprising the blended reaction product of (a) 100 parts by weight of a copolymer of monomers consisting essentially of (1) about 75-85 weight percent of at least one monomeric acrylic acid ester of nontertiary alkyl alcohol, and, correspondingly, (2) about 25-15 weight percent of vinyl carboxylic acid, (b) about 35-100 parts by weight of acidic rosin or rosin derivative, (c) sufficient potassium hydroxide to neutralize about 30-45% of the combined carboxyl groups of the copolymer and rosin or rosin derivative, (d) sufficient sodium hydroxide, lithium hydroxide, or a combination of sodium and lithium hydroxide to neutralize about 20-45% of said carboxyl groups, and (e) about 100-225 parts by weight of oily plasticizing water-soluble polyoxyethylene compound.
Claim 3
Dependent Claim
21 words
The adhesive of claim 1 wherein the acrylic acid ester comprises butyl acrylate and the vinyl carboxylic acid comprises acrylic acid.
Claim 4
Dependent Claim
25 words
The adhesive of claim 2 wherein the acrylic acid ester consists essentially of iso-octyl acrylate and butyl acrylate in the weight ratio of about 2:3-1:4.
Claim 5
Dependent Claim
29 words
The adhesive of claim 3 wherein about 30 to 45% of the carboxyl groups are neutralized with potassium hydroxide and about 20 to 45% are neutralized with sodium hydroxide.
Claim 6
Dependent Claim
34 words
Normally tacky and pressure-sensitive adhesive tape having particular utility in splicing carbonless papers comprising a self-sustaining sheet backing provided on at least one face with a thin layer of the adhesive of claim 2.
Claim 7
Dependent Claim
15 words
The tape of claim 5 wherein the backing is water-dispersible, whereby the tape is repulpable.
Claim 8
Dependent Claim
23 words
The tape of claim 6 wherein both sides of the backing are provided with a thin layer of the adhesive of claim 3.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-10-31 | 1987-05-02 | 1987-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-10-31 | 1991-05-02 | 1991-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-10-31 | 1995-05-02 | 1995-11-01 | $7700.00 | Window Closed / Lapsed |