JPS5732729A - Method for removal of formaldehyde in microcapsule dispersion - Google Patents
Method for removal of formaldehyde in microcapsule dispersionInfo
- Publication number
- JPS5732729A JPS5732729A JP10712580A JP10712580A JPS5732729A JP S5732729 A JPS5732729 A JP S5732729A JP 10712580 A JP10712580 A JP 10712580A JP 10712580 A JP10712580 A JP 10712580A JP S5732729 A JPS5732729 A JP S5732729A
- Authority
- JP
- Japan
- Prior art keywords
- formaldehyde
- compound
- methylene groups
- active methylene
- microcapsule dispersion
- 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
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 title abstract 21
- 239000003094 microcapsule Substances 0.000 title abstract 5
- 239000006185 dispersion Substances 0.000 title abstract 4
- 150000001875 compounds Chemical class 0.000 abstract 5
- 125000001570 methylene group Chemical group [H]C([H])([*:1])[*:2] 0.000 abstract 5
- 239000002775 capsule Substances 0.000 abstract 2
- 239000000463 material Substances 0.000 abstract 2
- LTMRRSWNXVJMBA-UHFFFAOYSA-L 2,2-diethylpropanedioate Chemical compound CCC(CC)(C([O-])=O)C([O-])=O LTMRRSWNXVJMBA-UHFFFAOYSA-L 0.000 abstract 1
- WRQNANDWMGAFTP-UHFFFAOYSA-N Methylacetoacetic acid Chemical compound COC(=O)CC(C)=O WRQNANDWMGAFTP-UHFFFAOYSA-N 0.000 abstract 1
- 230000002411 adverse Effects 0.000 abstract 1
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- XYIBRDXRRQCHLP-UHFFFAOYSA-N ethyl acetoacetate Chemical compound CCOC(=O)CC(C)=O XYIBRDXRRQCHLP-UHFFFAOYSA-N 0.000 abstract 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J13/00—Colloid chemistry, e.g. the production of colloidal materials or their solutions, not otherwise provided for; Making microcapsules or microballoons
- B01J13/02—Making microcapsules or microballoons
- B01J13/06—Making microcapsules or microballoons by phase separation
- B01J13/10—Complex coacervation, i.e. interaction of oppositely charged particles
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Dispersion Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Color Printing (AREA)
- Medicinal Preparation (AREA)
- Manufacturing Of Micro-Capsules (AREA)
Abstract
PURPOSE:To remove residual formaldehyde without giving any adverse influence upon microcapsules by adding a compound having active methylene groups to a microcapsule dispersion using formaldehyde as a capsule wall forming material to make the same alkaline and allowing the same to react quantitatively with the residual formaldehyde. CONSTITUTION:A compound having active methylene groups in added to a dispersion of microcapsules using formaldehyde as a capsule wall film forming material to allow the compound having active methylene groups and the residual formaldehyde not contributing to wall film formation to react in an alkaline region. Methyl acetoacetate, ethyl acetoacetate and diethyl malonate are suitable as the compound having active methylene groups. Further, if the microcapsule dispersion is controlled to an alkaline region, the reaction of the above-mentioned compound having active methylene groups and the residual formaldehyde improves and the more marked reaction is obtained under conditions of 9.0-10.5pH in particular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55107125A JPS6029293B2 (en) | 1980-08-06 | 1980-08-06 | Method for removing formaldehyde from microcapsule dispersion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55107125A JPS6029293B2 (en) | 1980-08-06 | 1980-08-06 | Method for removing formaldehyde from microcapsule dispersion |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5732729A true JPS5732729A (en) | 1982-02-22 |
| JPS6029293B2 JPS6029293B2 (en) | 1985-07-10 |
Family
ID=14451122
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP55107125A Expired JPS6029293B2 (en) | 1980-08-06 | 1980-08-06 | Method for removing formaldehyde from microcapsule dispersion |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6029293B2 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5750541A (en) * | 1980-09-10 | 1982-03-25 | Mitsubishi Paper Mills Ltd | Method for removing excess formaldehyde in microcapsule dispersion |
| WO1998027147A1 (en) * | 1996-12-19 | 1998-06-25 | The Dexter Corporation | Waterborne coating compositions having ultra low formaldehyde concentration |
| CN100384601C (en) * | 2006-03-07 | 2008-04-30 | 北京林业大学 | A kind of formaldehyde eliminating agent and preparation method thereof |
| US7855261B2 (en) | 2006-12-08 | 2010-12-21 | Eastman Chemical Company | Aldehyde removal |
| JP2013510216A (en) * | 2009-11-03 | 2013-03-21 | サン−ゴバン アドフォル | Film-forming composition comprising an agent capable of scavenging formaldehyde |
| JP2018517828A (en) * | 2015-06-16 | 2018-07-05 | エボニック デグサ ゲーエムベーハーＥｖｏｎｉｋ Ｄｅｇｕｓｓａ ＧｍｂＨ | Aldehyde scavenger mixture for polyurethane foam |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01235280A (en) * | 1988-03-15 | 1989-09-20 | Matsushita Electric Works Ltd | Photoelectric conversion device |
-
1980
- 1980-08-06 JP JP55107125A patent/JPS6029293B2/en not_active Expired
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5750541A (en) * | 1980-09-10 | 1982-03-25 | Mitsubishi Paper Mills Ltd | Method for removing excess formaldehyde in microcapsule dispersion |
| WO1998027147A1 (en) * | 1996-12-19 | 1998-06-25 | The Dexter Corporation | Waterborne coating compositions having ultra low formaldehyde concentration |
| CN100384601C (en) * | 2006-03-07 | 2008-04-30 | 北京林业大学 | A kind of formaldehyde eliminating agent and preparation method thereof |
| US7855261B2 (en) | 2006-12-08 | 2010-12-21 | Eastman Chemical Company | Aldehyde removal |
| JP2013510216A (en) * | 2009-11-03 | 2013-03-21 | サン−ゴバン アドフォル | Film-forming composition comprising an agent capable of scavenging formaldehyde |
| JP2018517828A (en) * | 2015-06-16 | 2018-07-05 | エボニック デグサ ゲーエムベーハーＥｖｏｎｉｋ Ｄｅｇｕｓｓａ ＧｍｂＨ | Aldehyde scavenger mixture for polyurethane foam |
| US10696777B2 (en) | 2015-06-16 | 2020-06-30 | Evonik Operations Gmbh | Aldehyde scavengers mixtures for polyurethane foams |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6029293B2 (en) | 1985-07-10 |
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