JPS5518218A - Removal of excess formaldehyde in dispersion liquid having microcapsule dispersed therein - Google Patents
Removal of excess formaldehyde in dispersion liquid having microcapsule dispersed thereinInfo
- Publication number
- JPS5518218A JPS5518218A JP8999478A JP8999478A JPS5518218A JP S5518218 A JPS5518218 A JP S5518218A JP 8999478 A JP8999478 A JP 8999478A JP 8999478 A JP8999478 A JP 8999478A JP S5518218 A JPS5518218 A JP S5518218A
- Authority
- JP
- Japan
- Prior art keywords
- formaldehyde
- removal
- dispersion liquid
- saccharides
- urea
- 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 15
- 239000003094 microcapsule Substances 0.000 title abstract 4
- 239000007788 liquid Substances 0.000 title abstract 2
- 239000006185 dispersion Substances 0.000 title 1
- 150000001720 carbohydrates Chemical class 0.000 abstract 3
- 229920001807 Urea-formaldehyde Polymers 0.000 abstract 2
- 239000012528 membrane Substances 0.000 abstract 2
- 229930091371 Fructose Natural products 0.000 abstract 1
- RFSUNEUAIZKAJO-ARQDHWQXSA-N Fructose Chemical compound OC[C@H]1O[C@](O)(CO)[C@@H](O)[C@@H]1O RFSUNEUAIZKAJO-ARQDHWQXSA-N 0.000 abstract 1
- 239000005715 Fructose Substances 0.000 abstract 1
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 abstract 1
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerol Natural products OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 abstract 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 abstract 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 abstract 1
- 229920000877 Melamine resin Polymers 0.000 abstract 1
- GZCGUPFRVQAUEE-SLPGGIOYSA-N aldehydo-D-glucose Chemical compound OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C=O GZCGUPFRVQAUEE-SLPGGIOYSA-N 0.000 abstract 1
- 229910052783 alkali metal Inorganic materials 0.000 abstract 1
- 150000001340 alkali metals Chemical class 0.000 abstract 1
- WQZGKKKJIJFFOK-VFUOTHLCSA-N beta-D-glucose Chemical compound OC[C@H]1O[C@@H](O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-VFUOTHLCSA-N 0.000 abstract 1
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 239000003054 catalyst Substances 0.000 abstract 1
- 239000007795 chemical reaction product Substances 0.000 abstract 1
- 239000003795 chemical substances by application Substances 0.000 abstract 1
- 239000008103 glucose Substances 0.000 abstract 1
- -1 glycerine aldehyde Chemical class 0.000 abstract 1
- 235000011187 glycerol Nutrition 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 abstract 1
- 229910052744 lithium Inorganic materials 0.000 abstract 1
- 229910000000 metal hydroxide Inorganic materials 0.000 abstract 1
- 150000004692 metal hydroxides Chemical class 0.000 abstract 1
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 abstract 1
- ODGAOXROABLFNM-UHFFFAOYSA-N polynoxylin Chemical compound O=C.NC(N)=O ODGAOXROABLFNM-UHFFFAOYSA-N 0.000 abstract 1
- 229910052708 sodium Inorganic materials 0.000 abstract 1
- 239000011734 sodium Substances 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
- B01J13/20—After-treatment of capsule walls, e.g. hardening
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Dispersion Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Color Printing (AREA)
- Manufacturing Of Micro-Capsules (AREA)
Abstract
PURPOSE:Removal of residual formaldehyde resulting from the formation of microcapsule with the wall membrane of urea-formaldehyde resin, etc. by reacting the residual formaldehyde with saccharide under a specified condition. CONSTITUTION:Microdroplets emulsified in a liquid vehicle are encapsulated with the wall membrane of urea-formaldehyde or melamine-formaldehyde resin to form microcapsules. An excess amount of formaldehyde used is reacted with five members of saccharides such as glucose, fructose, glycerine aldehyde, etc. at a temperature of 20 to 50 deg.C, at a pH of 11 to 12.5 in the presence of a hydroxide of alkali metal such as lithium, sodium, etc. to remove the excess formaldehyde, said alkal; metal hydroxide acting as a catalyst and alkalinity-adjusting agent. The reaction products of formaldehyde with saccharides are harmless and do not deteriorate the quality of the obtained microcapsules.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8999478A JPS5518218A (en) | 1978-07-25 | 1978-07-25 | Removal of excess formaldehyde in dispersion liquid having microcapsule dispersed therein |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8999478A JPS5518218A (en) | 1978-07-25 | 1978-07-25 | Removal of excess formaldehyde in dispersion liquid having microcapsule dispersed therein |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5518218A true JPS5518218A (en) | 1980-02-08 |
| JPS6228694B2 JPS6228694B2 (en) | 1987-06-22 |
Family
ID=13986159
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8999478A Granted JPS5518218A (en) | 1978-07-25 | 1978-07-25 | Removal of excess formaldehyde in dispersion liquid having microcapsule dispersed therein |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5518218A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2464094A1 (en) * | 1979-08-27 | 1981-03-06 | Kanzaki Paper Mfg Co Ltd | PROCESS FOR TREATING AN AQUEOUS DISPERSION OF MICROCAPSULES TO ELIMINATE RESIDUAL HIDDE FORMALDEHYDE |
| JPS5770479U (en) * | 1980-10-13 | 1982-04-28 | ||
| JPS57147430A (en) * | 1981-03-06 | 1982-09-11 | Kureha Chem Ind Co Ltd | Preparation of microcapsule |
| JPH11157208A (en) * | 1997-11-25 | 1999-06-15 | Nippon Paper Industries Co Ltd | Microcapsule dispersion for pressure-sensitive recording and manufacture thereof |
| JP2008142708A (en) * | 2006-12-06 | 2008-06-26 | Basf Se | Formaldehyde-reduced dispersion of microcapsules made of melamine-formaldehyde resin |
| JP2009202123A (en) * | 2008-02-28 | 2009-09-10 | Mitsubishi Paper Mills Ltd | Microcapsule |
| EP1930072A3 (en) * | 2006-12-06 | 2012-04-25 | Basf Se | Formaldehyde-reduced dispersion of microcapsules made from melamine-formaldehyde resin |
-
1978
- 1978-07-25 JP JP8999478A patent/JPS5518218A/en active Granted
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2464094A1 (en) * | 1979-08-27 | 1981-03-06 | Kanzaki Paper Mfg Co Ltd | PROCESS FOR TREATING AN AQUEOUS DISPERSION OF MICROCAPSULES TO ELIMINATE RESIDUAL HIDDE FORMALDEHYDE |
| JPS5770479U (en) * | 1980-10-13 | 1982-04-28 | ||
| JPS57147430A (en) * | 1981-03-06 | 1982-09-11 | Kureha Chem Ind Co Ltd | Preparation of microcapsule |
| JPH11157208A (en) * | 1997-11-25 | 1999-06-15 | Nippon Paper Industries Co Ltd | Microcapsule dispersion for pressure-sensitive recording and manufacture thereof |
| JP2008142708A (en) * | 2006-12-06 | 2008-06-26 | Basf Se | Formaldehyde-reduced dispersion of microcapsules made of melamine-formaldehyde resin |
| EP1930072A3 (en) * | 2006-12-06 | 2012-04-25 | Basf Se | Formaldehyde-reduced dispersion of microcapsules made from melamine-formaldehyde resin |
| JP2009202123A (en) * | 2008-02-28 | 2009-09-10 | Mitsubishi Paper Mills Ltd | Microcapsule |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6228694B2 (en) | 1987-06-22 |
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