GB968965A - Process for treating stable aqueous dispersions of homo or copolymers of unsaturatedsubstituted or unsubstituted hydrocarbons - Google Patents
Process for treating stable aqueous dispersions of homo or copolymers of unsaturatedsubstituted or unsubstituted hydrocarbonsInfo
- Publication number
- GB968965A GB968965A GB4864862A GB4864862A GB968965A GB 968965 A GB968965 A GB 968965A GB 4864862 A GB4864862 A GB 4864862A GB 4864862 A GB4864862 A GB 4864862A GB 968965 A GB968965 A GB 968965A
- Authority
- GB
- United Kingdom
- Prior art keywords
- component
- dispersion
- polymer
- water
- components
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08C—TREATMENT OR CHEMICAL MODIFICATION OF RUBBERS
- C08C1/00—Treatment of rubber latex
- C08C1/02—Chemical or physical treatment of rubber latex before or during concentration
- C08C1/065—Increasing the size of dispersed rubber particles
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08C—TREATMENT OR CHEMICAL MODIFICATION OF RUBBERS
- C08C1/00—Treatment of rubber latex
- C08C1/02—Chemical or physical treatment of rubber latex before or during concentration
- C08C1/065—Increasing the size of dispersed rubber particles
- C08C1/07—Increasing the size of dispersed rubber particles characterised by the agglomerating agents used
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F6/00—Post-polymerisation treatments
- C08F6/14—Treatment of polymer emulsions
- C08F6/18—Increasing the size of the dispersed particles
Landscapes
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
Abstract
An aqueous dispersion of a solid homopolymer or copolymer of an unsaturated substituted or unsubstituted hydrocarbon is contacted with component A which (1) consists of one or more organic liquids, (2) does not give an acid reaction towards the aqueous phase, (3) boils between -50 DEG C. and +200 DEG C., (4) has a stability at the temperature and pressure of the treatment, not exceeding 10 grams in 100 mol of water and (5) is such that, in relation to the polymer the value of the Flory-Higgins interaction parameter X of the organic liquid or the volume average X value of the collective organic liquid, is lower than 0.6, and with a component B which (1) consists of an organic liquid, (2) does not give an acid reaction towards the aqueous phase, (3) boils between -50 DEG C. and +195 DEG C., (4) has a solubility at the temperature and pressure of the treatment, of more than 10g in 100 ml of water and (5) containing more than one carbon atom in the molecule; the weight ratio of the sum of the polymer and component A to the sum of water and component B being at most 5, and then components A and B are removed from the dispersion. Preferably the weight ratio of polymer and component A to water and component B is between 0.5 and 3 while the component B may be mixed with the dispersion simultaneously with or after component A. Specified polymers are styrene-butadiene copolymers, polybutadiene, polystyrene, butadiene-acrylonitrile, neoprene, polyisoprene, polyvinyl chloride and polyvinyl acetate. Components A specified are benzene, toluene, xylene, cumene, chloroform and carbon tetrachloride, while isopropyl alcohol, acetone, methyl ethyl ketone, furfuryl alcohol, 2 methoxy ethanol, diacetone alcohol, dioxane, dimethyl ether, pyridine, nitromethane, ethylenechlorohydrin and methyl acetate are specified as B. It is also possible to use as solvent for the polymer a component A1 as a constituent of A with a parameter of at least 0.6. The dispersion to be treated may be subjected to concentration while the treated dispersion may have the components A and/or B removed with the aid of steam and then concentrated e.g. to a solids content of more than 55% by weight.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL272986 | 1961-12-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB968965A true GB968965A (en) | 1964-09-09 |
Family
ID=19753502
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4864862A Expired GB968965A (en) | 1961-12-28 | 1962-12-27 | Process for treating stable aqueous dispersions of homo or copolymers of unsaturatedsubstituted or unsubstituted hydrocarbons |
Country Status (5)
| Country | Link |
|---|---|
| BE (1) | BE626578A (en) |
| DE (1) | DE1494337C3 (en) |
| ES (1) | ES283726A1 (en) |
| GB (1) | GB968965A (en) |
| NL (2) | NL272986A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116574280A (en) * | 2023-05-29 | 2023-08-11 | 山东京博中聚新材料有限公司 | Latex with large particle size and high solid content and preparation method thereof |
-
0
- BE BE626578D patent/BE626578A/xx unknown
- NL NL131334D patent/NL131334C/xx active
- NL NL272986D patent/NL272986A/xx unknown
-
1962
- 1962-12-27 GB GB4864862A patent/GB968965A/en not_active Expired
- 1962-12-27 ES ES283726A patent/ES283726A1/en not_active Expired
- 1962-12-27 DE DE19621494337 patent/DE1494337C3/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116574280A (en) * | 2023-05-29 | 2023-08-11 | 山东京博中聚新材料有限公司 | Latex with large particle size and high solid content and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| DE1494337A1 (en) | 1969-07-17 |
| NL131334C (en) | |
| DE1494337B2 (en) | 1975-01-16 |
| BE626578A (en) | |
| DE1494337C3 (en) | 1975-10-02 |
| ES283726A1 (en) | 1963-06-01 |
| NL272986A (en) |
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