US4089829A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the manufacture of plastics dispersions
Assignee: Hoechst AG
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Filing: 1975-10-29
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Granted: 1978-05-16
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Expires: 1995-10-29
Abstract
Abstract The wet adhesion of plastics dispersions and of paints made therewith is widely improved, if in the manufacture of the dispersions a glycidyl ester of an olefinically unsaturated carboxylic acid in an amount of 0.5 to 10% by weight calculated on the total amount of monomers is copolymerized, and the dispersion so obtained is reacted with ammonia at a temperature of at least 50 DEG C.
Inventors
- 👤 Helmut Braun
- 👤 Helmut Rinno
- 👤 Rolf Reinecke
- 👤 Werner Stelzel
- 👤 Wolfgang Winstel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 06:00
CPC Classifications
C; C09; C09D; C09D157/00; C09D157/06; C09D157/10; C08; C08F; C08F246/00; C08F8/00; C08F8/30; C08F8/32; C08F220/00; C08F220/02; C08F220/10; C08F220/26; C08F220/32; C08F220/325
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
95 words
A process for making a plastics dispersion suitable for use in dispersion paints having a high wet adhesion which comprises the steps of copolymerizing in an aqueous medium one or more mono-olefinically unsaturated monomers and from 0.5 to 10% by weight, based on the total weight of monomers, of a glycidyl ester of an olefinically unsaturated carboxylic acid, and adding to the resulting dispersion, while maintaining it at a temperature above 50° C., at least one mole per mole of glycidyl groups of the polymer of an alkaline agent selected from ammonia and hexamethylene tetramine.
Claim 2
Dependent Claim
95 words
A process for making a plastics dispersion suitable for use in dispersion paints having a high wet adhesion which comprises the steps of copolymerizing in an aqueous medium one or more mono-olefinically unsaturated monomers and from 0.5 to 10% by weight, based on the total weight of monomers, of a glycidyl ester of an olefinically unsaturated carboxylic acid, and adding to the resulting dispersion, while maintaining it at a temperature above 50° C., at least one mole per mole of glycidyl groups of the polymer of an alkaline agent selected from ammonia and hexamethylene tetramine.
Claim 3
Dependent Claim
19 words
A process according to claim 1 and wherein the hot dispersion is rendered alkaline by the addition of ammonia.
Claim 4
Dependent Claim
32 words
A process according to claim 1 and wherein the glycidyl ester is added to the polymerization mixture after at least 40% and at most 80% of the other monomers have been polymerized.
Claim 5
Dependent Claim
21 words
A process according to claim 1 and wherein the dispersion is blended with a pigment paste to form said dispersion paint.
Claim 6
Dependent Claim
10 words
A dispersion paint made by the process of claim 4.
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) | 1981-05-15 | 1981-11-14 | 1982-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-05-15 | 1985-11-14 | 1986-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-05-15 | 1989-11-14 | 1990-05-16 | $7700.00 | Window Closed / Lapsed |