US4413082A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water-soluble, pressure sensitive, self-adhesive compositions and articles made therewith
Assignee: Beiersdorf AG
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Filing: 1982-02-16
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Granted: 1983-11-01
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Expires: 2002-02-16
Abstract
Abstract A water-soluble, pressure-sensitive, self-adhesive composition comprising a limited class of copolymers and a specific plasticizer which is completely neutralized with potassium hydroxide. The composition comprises 30 to 80 parts of a copolymer of 70 to 88% by weight acrylic acid butyl ester and 12 to 30% by weight vinyl carboxylic acid. The ester may be substituted in an amount of 3 to 12% by weight by acrylic acid-2-ethylhexyl ester and/or 5 to 25% by weight by a mixture of vinyl acetate and fumaric acid dialkyl ester. The composition also includes 20 to 70 parts by weight of a water soluble plasticizer which is ethoxylated phenol (or alkylphenol), ethoxylated alkyl mono- or diamine, or an ethoxylated alkyl ammonium compound. The composition is particularly useful for the production of adhesive tapes and similar articles useful in the papermaking industry for maintaining paper webs in continuous form.
Inventors
- 👤 Peter Gleichenhagen
- 👤 Ingrid Wesselkamp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:36
CPC Classifications
C; C09; C09J; C09J133/00; C09J133/04; C09J133/06; C09J133/08; C09J7/00; C09J7/20; C09J7/21; C09J7/30; C09J7/38; C08; C08L; C08L2666/00; C08L2666/28; C09J2301/00; C09J2301/30; C09J2301/302
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
125 words
A water-soluble, pressure-sensitive self-adhesive composition comprising based on 100 parts by weight of solids, (a) 30 to 80 parts by weight of a copolymer comprising (i) 70 to 88% by weight acrylic acid butyl ester, and (ii) 12 to 30% by weight vinyl carboxylic acid wherein (i) may be substituted in an amount of 3 to 12 weight % by acrylic acid-2-ethylhexyl ester and/or 5 to 25 weight % by a mixture of vinyl acetate and fumaric or maleic acid dialkyl ester, and (b) 20 to 70 parts by weight of a water soluble plasticizer taken from the class consisting of ethoxylated phenols, ethoxylated alkyl phenols, ethoxylated alkyl mono- or diamines and ethoxylated alkyl ammonium compounds, wherein said (ii) is substantially completely neutralized with KOH.
Claim 2
Dependent Claim
125 words
A water-soluble, pressure-sensitive self-adhesive composition comprising based on 100 parts by weight of solids, (a) 30 to 80 parts by weight of a copolymer comprising (i) 70 to 88% by weight acrylic acid butyl ester, and (ii) 12 to 30% by weight vinyl carboxylic acid wherein (i) may be substituted in an amount of 3 to 12 weight % by acrylic acid-2-ethylhexyl ester and/or 5 to 25 weight % by a mixture of vinyl acetate and fumaric or maleic acid dialkyl ester, and (b) 20 to 70 parts by weight of a water soluble plasticizer taken from the class consisting of ethoxylated phenols, ethoxylated alkyl phenols, ethoxylated alkyl mono- or diamines and ethoxylated alkyl ammonium compounds, wherein said (ii) is substantially completely neutralized with KOH.
Claim 3
Dependent Claim
19 words
The composition of claim 1 wherein there is 15 to 22% by weight of said vinyl carboxylic acid present.
Claim 4
Dependent Claim
13 words
The composition of claim 2 wherein said (ii) is neutralized with excess KOH.
Claim 5
Dependent Claim
17 words
The composition of claim 1 wherein (b) is acrylic acid, methacrylic acid, itaconic acid, or mixtures thereof.
Claim 6
Dependent Claim
19 words
The composition of claim 1 wherein said fumaric ester is fumaric acid di-2-ethylhexyl ester or fumaric acid di-n-butyl ester.
Claim 7
Dependent Claim
59 words
The composition of claim 1 wherein (a) is a copolymer comprising 58 to 80% by weight of (i) with 15 to 22% by weight of acrylic acid and 5 to 20% by weight of a mixture of vinyl acetate and fumaric acid di-2-ethylhexyl ester in a ratio of 1:2 to 1:4, all % being based on total monomer present.
Claim 8
Dependent Claim
26 words
The composition of claim 1 wherein said (ii) is neutralized with at least one mole of said KOH per mole of carboxyl groups in said copolymer.
Claim 9
Dependent Claim
26 words
The composition of claim 1 further comprising 2 to 30% by weight of a water-insoluble adhesive resin (tackifier) based on the solids present in said composition.
Claim 10
Dependent Claim
17 words
A self-adhesive article comprising a sheet-like substrate having a coating thereon of the composition of claim 1.
Claim 11
Dependent Claim
15 words
The article of claim 9 wherein said coating is on both sides of said substrate.
Claim 12
Dependent Claim
19 words
The composition of claim 1 wherein said fumaric diesters contain 3 to 10 carbon atoms in the alcohol radical.
Claim 13
Dependent Claim
11 words
The composition of claim 6 wherein said ratio is about 1:2.5.
Claim 14
Dependent Claim
18 words
The composition of claim 1 wherein (a) is a copolymer comprising 58 to 80% by weight of (i).
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 |