UST957003I4 - Method of cleaning PVC reactors - Google Patents
Method of cleaning PVC reactors Download PDFInfo
- Publication number
- UST957003I4 UST957003I4 US05/704,140 US70414076A UST957003I4 US T957003 I4 UST957003 I4 US T957003I4 US 70414076 A US70414076 A US 70414076A US T957003 I4 UST957003 I4 US T957003I4
- Authority
- US
- United States
- Prior art keywords
- solvent
- pyrrolidone
- composition
- reactor
- reactor surface
- 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.)
- Pending
Links
- 238000000034 method Methods 0.000 title abstract 2
- 238000004140 cleaning Methods 0.000 title 1
- 239000002904 solvent Substances 0.000 abstract 5
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 abstract 2
- 239000003795 chemical substances by application Substances 0.000 abstract 2
- 239000003349 gelling agent Substances 0.000 abstract 2
- 230000003472 neutralizing effect Effects 0.000 abstract 2
- 229920000642 polymer Polymers 0.000 abstract 2
- ZFPGARUNNKGOBB-UHFFFAOYSA-N 1-Ethyl-2-pyrrolidinone Chemical compound CCN1CCCC1=O ZFPGARUNNKGOBB-UHFFFAOYSA-N 0.000 abstract 1
- DCALJVULAGICIX-UHFFFAOYSA-N 1-propylpyrrolidin-2-one Chemical compound CCCN1CCCC1=O DCALJVULAGICIX-UHFFFAOYSA-N 0.000 abstract 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N Acrylic acid Chemical group OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 abstract 1
- SAIKULLUBZKPDA-UHFFFAOYSA-N Bis(2-ethylhexyl) amine Chemical group CCCCC(CC)CNCC(CC)CCCC SAIKULLUBZKPDA-UHFFFAOYSA-N 0.000 abstract 1
- 229920000663 Hydroxyethyl cellulose Polymers 0.000 abstract 1
- 239000004354 Hydroxyethyl cellulose Substances 0.000 abstract 1
- 229940096529 carboxypolymethylene Drugs 0.000 abstract 1
- 235000019447 hydroxyethyl cellulose Nutrition 0.000 abstract 1
- 229920000915 polyvinyl chloride Polymers 0.000 abstract 1
- 239000004800 polyvinyl chloride Substances 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
- C11D7/50—Solvents
- C11D7/5004—Organic solvents
- C11D7/5013—Organic solvents containing nitrogen
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D17/00—Detergent materials or soaps characterised by their shape or physical properties
- C11D17/0008—Detergent materials or soaps characterised by their shape or physical properties aqueous liquid non soap compositions
- C11D17/003—Colloidal solutions, e.g. gels; Thixotropic solutions or pastes
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Dispersion Chemistry (AREA)
- Detergent Compositions (AREA)
- Polymerisation Methods In General (AREA)
Abstract
surfaces of polyvinylchloride reactors are cleaned using a solvent gel composition. The solvent gel composition comprises: (a) solvent, (b) gelling agent, and (c), in some cases, a neutralizing agent. Suitable solvents include N-methyl-2-pyrrolidone, N-ethyl-2-pyrrolidone, and N-propyl-2-pyrrolidone. Suitable gelling agents include carboxy polymethylene polymer and hydroxyethyl cellulose. A suitable neutralizing agent is di-2-ethylhexylamine. The composition is applied to the reactor surfaces by conventional means, such as a brush. The composition is left on the reactor surface for at least one-half hour. It is then removed from the reactor surface for at least one-half hour. It is then removed from the reactor surface using a scraper (preferably non-metallic). If necessary, the entire process may be repeated to completely remove the deposits. In some cases it may be desirable to then apply the solvent per se in order to remove any film or polymer which may remain.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US05/704,140 UST957003I4 (en) | 1976-07-12 | 1976-07-12 | Method of cleaning PVC reactors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US05/704,140 UST957003I4 (en) | 1976-07-12 | 1976-07-12 | Method of cleaning PVC reactors |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| UST957003I4 true UST957003I4 (en) | 1977-04-05 |
Family
ID=24828243
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US05/704,140 Pending UST957003I4 (en) | 1976-07-12 | 1976-07-12 | Method of cleaning PVC reactors |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | UST957003I4 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4453984A (en) | 1982-06-30 | 1984-06-12 | International Business Machines Corporation | Method for removing electrically conductive paste from a screening mask |
| US4591391A (en) | 1983-04-04 | 1986-05-27 | Shin-Etsu Chemical Co., Ltd. | Method for removing polymer scale deposited on reactor walls and a polymer scale remover agent therefor |
-
1976
- 1976-07-12 US US05/704,140 patent/UST957003I4/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4453984A (en) | 1982-06-30 | 1984-06-12 | International Business Machines Corporation | Method for removing electrically conductive paste from a screening mask |
| US4591391A (en) | 1983-04-04 | 1986-05-27 | Shin-Etsu Chemical Co., Ltd. | Method for removing polymer scale deposited on reactor walls and a polymer scale remover agent therefor |
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