JPS56141303A - Recovery of polymer - Google Patents
Recovery of polymerInfo
- Publication number
- JPS56141303A JPS56141303A JP4416680A JP4416680A JPS56141303A JP S56141303 A JPS56141303 A JP S56141303A JP 4416680 A JP4416680 A JP 4416680A JP 4416680 A JP4416680 A JP 4416680A JP S56141303 A JPS56141303 A JP S56141303A
- Authority
- JP
- Japan
- Prior art keywords
- coagulant
- polymer latex
- polymer
- primary
- rigid
- 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.)
- Granted
Links
- 229920000642 polymer Polymers 0.000 title abstract 6
- 238000011084 recovery Methods 0.000 title abstract 2
- 239000004816 latex Substances 0.000 abstract 5
- 229920000126 latex Polymers 0.000 abstract 5
- 239000000701 coagulant Substances 0.000 abstract 4
- 229920001971 elastomer Polymers 0.000 abstract 3
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 abstract 2
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 abstract 1
- 239000012736 aqueous medium Substances 0.000 abstract 1
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 abstract 1
- 238000006243 chemical reaction Methods 0.000 abstract 1
- 229920001577 copolymer Polymers 0.000 abstract 1
- 239000006185 dispersion Substances 0.000 abstract 1
- 238000001035 drying Methods 0.000 abstract 1
- 238000007720 emulsion polymerization reaction Methods 0.000 abstract 1
- -1 etc. Substances 0.000 abstract 1
- 230000009477 glass transition Effects 0.000 abstract 1
- 229920000578 graft copolymer Polymers 0.000 abstract 1
- 229910052943 magnesium sulfate Inorganic materials 0.000 abstract 1
- 235000019341 magnesium sulphate Nutrition 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 239000002245 particle Substances 0.000 abstract 1
- 239000000843 powder Substances 0.000 abstract 1
- 238000000926 separation method Methods 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Abstract
PURPOSE: To recover high-density emlusion polymer as a dehydroated cake having low water content, suppressing the generation of fine powders, by adding a coagulant, a rubbery polymer latex, etc., and a coagulant in the order to a rigid polymer latex, and heat-treating the mixture at a specific temperature.
CONSTITUTION: In the recovery of a polymer from a reaction system after the emulsion polymerization in an aqueous medium, a coagulant (e.g. magnesium sulfate) is added to a rigid polymer latex (e.g. α-methylstyrene-acrylonitrile copolymer) to obtain a dispersion of primary coagulum, which is then mixed with a rubbery polymer latex (e.g. butadiene-styrene copolyer) and/or a graft polymer latex, and finally a coagulant (e.g. aluminum sulfate) is added to the product to precipitate the rubbery polymer, etc. to the surface of the primary coagulum particles. The product is heat-treated above a temperature lower than the glass transition temperature of the rigid polymer by 10°C, followed by separation and drying.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4416680A JPS56141303A (en) | 1980-04-03 | 1980-04-03 | Recovery of polymer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4416680A JPS56141303A (en) | 1980-04-03 | 1980-04-03 | Recovery of polymer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56141303A true JPS56141303A (en) | 1981-11-05 |
| JPS6142922B2 JPS6142922B2 (en) | 1986-09-25 |
Family
ID=12683998
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4416680A Granted JPS56141303A (en) | 1980-04-03 | 1980-04-03 | Recovery of polymer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56141303A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5849836A (en) * | 1994-10-21 | 1998-12-15 | General Electric Company | Coagulation of polymers using sulfurous acid |
-
1980
- 1980-04-03 JP JP4416680A patent/JPS56141303A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5849836A (en) * | 1994-10-21 | 1998-12-15 | General Electric Company | Coagulation of polymers using sulfurous acid |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6142922B2 (en) | 1986-09-25 |
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