US5070136A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aqueous polymer dispersions for coating wood
Assignee: BASF SE
•
Filing: 1991-03-26
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Granted: 1991-12-03
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Expires: 2011-03-26
Abstract
Abstract Aqueous polymer dispersions essentially containing a copolymer of a) from 85 to 98.5% by weight of methacrylates, b) from 0.5 to 4% by weight of arcylic acid and/or methacrylic acid, c) from 0.5 to 4% by weight of acrylamide and/or methacrylamide, d) from 0.5 to 4% by weight of an α,β-ethylenically diunsaturated or polyunsaturated compound and e) from 0 to 3% by weight of a carbonyl-containing α,β-ethylenically unsaturated compound, a process for their preparation, and their use for coating wood.
Inventors
- 👤 Rolf Dersch
- 👤 Heinrich Dehne
- 👤 Roland Gellert
- 👤 Dietrich-Wolfgang Mueller
- 👤 Johannes Vinke
- 👤 Eckehardt Wistuba
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:29
CPC Classifications
C; C08; C08F; C08F220/00; C08F220/02; C08F220/10; C08F220/12; C09; C09D; C09D133/00; C09D133/04; C09D133/06; C09D133/10
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
105 words
An aqueous copolymer dispersion in which the copolymer consists of: a) from 85 to 98.5% by weight of methacrylates of C 1 -C 12 -monalcohols, b) from 0.5 to 4% by weight of acrylic acid, methacrylic acid or mixtures thereof, c) from 0.5 to 4% by weight of acrylamide, methacrylamide or mixtures thereof, from 0.5 to 4% by weight of a diacrylate or a dimethacrylate of C 2 -C 24 -diols, a divinyl aromatic compound, a divinyl urea, a diallyl or triallyl compound or mixtures thereof, and e) from 0 to 3% by weight of acrolein, methacrolein, diacetoneacrylamide, diacetonemethacrylamide, 2-butanonemethacrylates, vinyl acetoacetate or mixtures thereof.
Claim 2
Dependent Claim
105 words
An aqueous copolymer dispersion in which the copolymer consists of: a) from 85 to 98.5% by weight of methacrylates of C 1 -C 12 -monalcohols, b) from 0.5 to 4% by weight of acrylic acid, methacrylic acid or mixtures thereof, c) from 0.5 to 4% by weight of acrylamide, methacrylamide or mixtures thereof, from 0.5 to 4% by weight of a diacrylate or a dimethacrylate of C 2 -C 24 -diols, a divinyl aromatic compound, a divinyl urea, a diallyl or triallyl compound or mixtures thereof, and e) from 0 to 3% by weight of acrolein, methacrolein, diacetoneacrylamide, diacetonemethacrylamide, 2-butanonemethacrylates, vinyl acetoacetate or mixtures thereof.
Claim 3
Dependent Claim
10 words
The aqueous copolymer dispersion of claim 1, containing conventional additives.
Claim 4
Dependent Claim
24 words
The aqueous copolymer dispersion of claim 2 wherein said additives are selected from waxes, film formation assistants, solvents, flattening agents, thickeners or mixtures thereof.
Claim 5
Dependent Claim
66 words
An aqueous polymer dispersion as defined in claim 1, wherein the copolymer consists of a) from 85 to 98.5% by weight of a mixture of N-butyl methacrylate and methyl methacrylate, b) from 0.5 to 4% by weight of a mixture of acrylic acid and methacrylic acid, c) from 0.5 to 4% by weight of acrylamide, and d) from 0.5 to 4% by weight of 1,4-butanediol diacrylate.
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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) | 1994-12-02 | 1995-06-03 | 1995-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-12-02 | 1999-06-03 | 1999-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-12-02 | 2003-06-03 | 2003-12-03 | $7700.00 | Window Closed / Lapsed |