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US4250070A
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Aqueous dispersions, containing hydrazine derivatives, of carbonyl-containing copolymers
Assignee: BASF SE
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Filing: 1979-01-16
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Granted: 1981-02-10
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Expires: 1999-01-16
Abstract
Abstract Aqueous dispersions of carbonyl-containing copolymers, which dispersions contain from 0.02 to 1 mole, per mole of carbonyl group, of organic hydrazine derivatives possessing 2 or more hydrazine radicals, and from 0.0002 to 0.02 mole, per mole of the hydrazine derivatives, of heavy metal ions give coatings, impregnations and finishes which are particularly easy to cross-link.
Inventors
- 👤 Gregor Ley
- 👤 Erich Penzel
- 👤 Walter Rebafka
- 👤 Kaspar Bott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:28
CPC Classifications
C; C14; C14C; C14C11/00; C14C11/003; C08; C08K; C08K5/00; C08K5/16; C08K5/22; C08K5/24; C08L; C08L101/00; C08L101/02; C08L101/06
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
104 words
An aqueous dispersion of a copolymer of olefinically unsaturated monomers containing keto and/or aldehyde ##STR6## groups, which dispersion contains as a crosslinking agent for the keto and/or aldehyde groups of the copolymer from 0.02 to 1 mole of an organic hydrazine derivative from the group consisting of dihydrazides of aliphatic dicarboxylic acids of 2 to 10 carbon atoms and bis-semi-carbazides of the general formula ##STR7## in which R is an aliphatic radical of 2 to 7 carbon atoms or a carbocyclic radical of 6 to 8 carbon atoms, and from 0.0002 to 0.02 mole of heavy metal ions per mole of the hydrazine derivative.
Claim 2
Dependent Claim
104 words
An aqueous dispersion of a copolymer of olefinically unsaturated monomers containing keto and/or aldehyde ##STR6## groups, which dispersion contains as a crosslinking agent for the keto and/or aldehyde groups of the copolymer from 0.02 to 1 mole of an organic hydrazine derivative from the group consisting of dihydrazides of aliphatic dicarboxylic acids of 2 to 10 carbon atoms and bis-semi-carbazides of the general formula ##STR7## in which R is an aliphatic radical of 2 to 7 carbon atoms or a carbocyclic radical of 6 to 8 carbon atoms, and from 0.0002 to 0.02 mole of heavy metal ions per mole of the hydrazine derivative.
Claim 3
Dependent Claim
38 words
The dispersion of claim 1 which contains from 0.0002 to 0.02 mole of copper, iron, manganese, vanadium, zinc, lead and/or cobalt ions per mole of a dihydrazide of an aliphatic dicarboxylic acid of 2 to 10 carbon atoms.
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) | 1984-02-10 | 1984-08-11 | 1985-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-02-10 | 1988-08-11 | 1989-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-02-10 | 1992-08-11 | 1993-02-10 | $7700.00 | Window Closed / Lapsed |