US3878152A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat-sensitization of anionic and non-ionic aqueous polymer dispersions
Assignee: BASF SE
•
Filing: 1973-05-23
•
Granted: 1975-04-15
•
Expires: 1993-05-23
Abstract
Abstract Polymer dispersions are heat-sensitized by the addition of alkoxylated amines having inverse solubility, when the pH of the mixture is below 6.
Inventors
- 👤 Dieter Distler
- 👤 Kurt Wendel
- 👤 Andreas Einwiller
- 👤 Knut Oppenlaender
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:15
CPC Classifications
B; B01; B01D; B01D39/00; B01D39/14; C; C08; C08C; C08C1/00; C08C1/14; C08C1/145; C08F; C08F6/00; C08F6/14; C08F6/22; C08J; C08J3/00; C08J3/12; C08J3/16; D; D06; D06M; D06M13/00; D06M13/322; D06M13/372; Y; Y10; Y10S; Y10S524/00; Y10S524/925; Y10S524/926
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
166 words
IN A PROCESS FOR THE HEAT-SENSITIZATION OF AN ANIONIC OR NONIONIC AQUEOUS COPOLYMER DISPERSION HAVING A POLYMER CONTENT OF FROM 5 TO 60 PERCENT BY WEIGHT AND CONTAINING 0.1 TO 2 PERCENT BY WEIGHT, BASED ON THE POLYMER, OF AN ANIONIC OR NONIONIC EMULSIFIER, IN WHICH A POPOLYALKYLENE OXIDE COMPOUND HAVING INVERSE SOLUBILITY IS ADDED, AS A SENSITIZER, TO THE POLYMER DISPERSION AFTER ITS MANUFACTURE, THE IMPROVEMENT WHICH COMPRISES ADDING TO SAID POLYMER DISPERSION, AS THE HEAT SENSITIZER THEREFOR, IN AN AMOUNT OF FROM 2 TO 10 PERCENT BY WEIGHT, BASED ON THE POLYMER, A POLYALKOXYLATED ALIPHATIC AMINE CONTAINING FROM 1 TO 10 AMINO GROUPS AND ALKOXYLATED WITH AN ALKYLENE OXIDE SELECTED FROM THE GROUP CONSISTING OF ETHYLENE OXIDE, PROPYLENE OXIDE, AND BOTH OXIDES, SAID POLYALKOXYLATED AMINE HAVING A MEAN MOLECULAR WEIGHT OF FROM 200 TO 15,000, AS MEASURED BY THE HYDROXYL NUMBER DETERMINED BY THE ACETIC ANHYDRIDE METHOD, AND ADJUSTING THE PH OF THE MIXTURE TO BELOW 6 IF IT IS NOT ALREADY BELOW 6.
Claim 2
Dependent Claim
166 words
IN A PROCESS FOR THE HEAT-SENSITIZATION OF AN ANIONIC OR NONIONIC AQUEOUS COPOLYMER DISPERSION HAVING A POLYMER CONTENT OF FROM 5 TO 60 PERCENT BY WEIGHT AND CONTAINING 0.1 TO 2 PERCENT BY WEIGHT, BASED ON THE POLYMER, OF AN ANIONIC OR NONIONIC EMULSIFIER, IN WHICH A POPOLYALKYLENE OXIDE COMPOUND HAVING INVERSE SOLUBILITY IS ADDED, AS A SENSITIZER, TO THE POLYMER DISPERSION AFTER ITS MANUFACTURE, THE IMPROVEMENT WHICH COMPRISES ADDING TO SAID POLYMER DISPERSION, AS THE HEAT SENSITIZER THEREFOR, IN AN AMOUNT OF FROM 2 TO 10 PERCENT BY WEIGHT, BASED ON THE POLYMER, A POLYALKOXYLATED ALIPHATIC AMINE CONTAINING FROM 1 TO 10 AMINO GROUPS AND ALKOXYLATED WITH AN ALKYLENE OXIDE SELECTED FROM THE GROUP CONSISTING OF ETHYLENE OXIDE, PROPYLENE OXIDE, AND BOTH OXIDES, SAID POLYALKOXYLATED AMINE HAVING A MEAN MOLECULAR WEIGHT OF FROM 200 TO 15,000, AS MEASURED BY THE HYDROXYL NUMBER DETERMINED BY THE ACETIC ANHYDRIDE METHOD, AND ADJUSTING THE PH OF THE MIXTURE TO BELOW 6 IF IT IS NOT ALREADY BELOW 6.
Claim 3
Dependent Claim
40 words
A process as claimed in claim 1, wherein said alkoxylated amine is a polyoxypropylated aliphatic amine having 1-4 carbon atoms and 1-3 amino groups, said polyoxypropylated amine having a mean molecular weight of from 800 to 6,000, as measured aforesaid.
Claim 4
Dependent Claim
66 words
A process as claimed in claim 1, wherein said alkoxylated amine is an aliphatic amine with 1 to 4 carbon atoms and 1 to 3 amino groups and the oxyalkylene groups thereof are those of both ethylene oxide and propylene oxide in a molar ratio between 1:10 and 1:1, respectively, said polyalkoxylated amine having a mean molecular weight of from 800 to 6000 as measured aforesaid.
Claim 5
Dependent Claim
21 words
A process as claimed in claim 1, wherein said aliphatic amine has more than 4 carbon atoms and 1-3 amino groups.
Claim 6
Dependent Claim
23 words
A process as claimed in claim 1, and thereafter heating said mixture to a temperature sufficient to cause said polymer dispersion to coagulate.
Claim 7
Dependent Claim
45 words
A process as claimed in claim 1, wherein said alkoxylated amine is ethylene diamine, diethylene triamine, triethylene tetramine, tetraethylene pentamine or dipropylene triamine which is oxyalkylated with both ethylene oxide and propylene oxide in a mol ratio of said oxides of 1:10 to 1:1, respectively.
Claim 8
Dependent Claim
17 words
A process as claimed in claim 1, wherein said alkoxylated amine is polyoxypropylated triethanolamine, diethanolamine, or ethanolamine.
Claim 9
Dependent Claim
15 words
A process as claimed in claim 1, wherein said alkoxylated amine is polyoxypropylated ethylene diamine.
Claim 10
Dependent Claim
36 words
A process as claimed in claim 1, wherein said oxyalkylated amine is ethylene diamine which is oxyalkylated with both ethylene oxide and propylene oxide in a mol ratio of said oxides of 1:10 to 1:1, respectively.
References Cited (Backward Citations)
US2809948A
Cited
US2805210A
Cited
US2912349A
Cited
US3006872A
Cited
US3321432A
Cited
US3549579A
Cited
US3660324A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-04-14 | 1978-10-14 | 1979-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-14 | 1982-10-14 | 1983-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-14 | 1986-10-14 | 1987-04-15 | $7700.00 | Window Closed / Lapsed |