JPS6434782A - Preparation of aqueous dispersion of color developer for pressure sensitive copying paper - Google Patents
Preparation of aqueous dispersion of color developer for pressure sensitive copying paperInfo
- Publication number
- JPS6434782A JPS6434782A JP62188930A JP18893087A JPS6434782A JP S6434782 A JPS6434782 A JP S6434782A JP 62188930 A JP62188930 A JP 62188930A JP 18893087 A JP18893087 A JP 18893087A JP S6434782 A JPS6434782 A JP S6434782A
- Authority
- JP
- Japan
- Prior art keywords
- color developer
- polyvinyl alcohol
- aqueous dispersion
- color
- emulsifying
- 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
- 239000006185 dispersion Substances 0.000 title abstract 4
- 239000004372 Polyvinyl alcohol Substances 0.000 abstract 5
- 229920002451 polyvinyl alcohol Polymers 0.000 abstract 5
- 230000001804 emulsifying effect Effects 0.000 abstract 3
- 239000007864 aqueous solution Substances 0.000 abstract 2
- 239000000470 constituent Substances 0.000 abstract 2
- 238000001816 cooling Methods 0.000 abstract 2
- 238000006116 polymerization reaction Methods 0.000 abstract 2
- YGSDEFSMJLZEOE-UHFFFAOYSA-N salicylic acid Chemical class OC(=O)C1=CC=CC=C1O YGSDEFSMJLZEOE-UHFFFAOYSA-N 0.000 abstract 2
- 238000007127 saponification reaction Methods 0.000 abstract 2
- 238000000034 method Methods 0.000 abstract 1
Landscapes
- Color Printing (AREA)
Abstract
PURPOSE:To obtain an aqueous dispersion of a color developer having high concentration and excellent handleability and shelf stability and capable of improving color developing property, printability and light resistance of a color developing sheet, by emulsifying or dispersing a color developer comprising a specified substituted salicylic acid salt as a main constituent in an aqueous solution of polyvinyl alcohol at a temperature higher than the softening point of the color developer, followed by cooling. CONSTITUTION:An aqueous dispersion of a color developer is prepared by a method wherein a color developer comprising a substituted salicylic acid salt of general formula I as a main constituent and having a softening point of at least 30 deg.C is emulsified or dispersed in an aqueous solution of a polyvinyl alcohol having a polymerization degree of at least 500 and a saponification degree of at least 70% at a temperature higher than the softening point of the color developer by at least 30 deg.C, followed by cooling. If the polymerization degree of the polyvinyl alcohol is less than 500, a capability of emulsifying the color developer is unsatisfactory, and it is impossible to obtain an aqueous dispersion of the color developer improved in shelf stability. If the saponification degree of the polyvinyl alcohol is less than 70%, the emulsifying capability is again made unsatisfactory. The polyvinyl alcohol is used preferably in an amount of about 1-30pts.wt. per 100pts.wt. of the color developer.
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62188930A JP2889237B2 (en) | 1987-07-30 | 1987-07-30 | Method for producing aqueous dispersion of developer for pressure-sensitive copying paper |
AU10268/88A AU616163C (en) | 1987-01-14 | 1988-01-14 | An aqueous dispersion of a developer for pressure-sensitive recording sheet and a process for producing the same |
DE88100473T DE3879721T2 (en) | 1987-01-14 | 1988-01-14 | Aqueous developer dispersion for a pressure-sensitive recording sheet and process for its production. |
EP88100473A EP0275107B1 (en) | 1987-01-14 | 1988-01-14 | An aqueous developer dispersion for a pressure-sensitive recording sheet and a process for producing the same |
US07/405,063 US4950330A (en) | 1987-01-14 | 1989-09-07 | Aqueous dispersion of a developer for pressure-sensitive recording sheet and a process for producing the same |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62188930A JP2889237B2 (en) | 1987-07-30 | 1987-07-30 | Method for producing aqueous dispersion of developer for pressure-sensitive copying paper |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6434782A true JPS6434782A (en) | 1989-02-06 |
JP2889237B2 JP2889237B2 (en) | 1999-05-10 |
Family
ID=16232381
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62188930A Expired - Fee Related JP2889237B2 (en) | 1987-01-14 | 1987-07-30 | Method for producing aqueous dispersion of developer for pressure-sensitive copying paper |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2889237B2 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63173680A (en) * | 1987-01-14 | 1988-07-18 | Sanko Kaihatsu Kagaku Kenkyusho:Kk | Water dispersion of color developer for pressure-sensitive recording paper and manufacture thereof |
JPH04279386A (en) * | 1991-03-08 | 1992-10-05 | Fuji Photo Film Co Ltd | Manufacture of developer dispersant for pressure-sensitive sheet |
CN110850689A (en) * | 2019-11-18 | 2020-02-28 | 珠海茂逸复印机耗材有限公司 | Self-degradation developer and preparation method thereof |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57191087A (en) * | 1981-05-21 | 1982-11-24 | Kanzaki Paper Mfg Co Ltd | Pressure-sensitive copying paper |
JPS6398483A (en) * | 1986-10-16 | 1988-04-28 | Kureha Chem Ind Co Ltd | Production of color developer sheet for pressure-sensitive recording |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2580144B2 (en) | 1987-01-14 | 1997-02-12 | 株式会社 三光開発科学研究所 | Method for producing aqueous dispersion of developer for pressure-sensitive recording paper |
-
1987
- 1987-07-30 JP JP62188930A patent/JP2889237B2/en not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57191087A (en) * | 1981-05-21 | 1982-11-24 | Kanzaki Paper Mfg Co Ltd | Pressure-sensitive copying paper |
JPS6398483A (en) * | 1986-10-16 | 1988-04-28 | Kureha Chem Ind Co Ltd | Production of color developer sheet for pressure-sensitive recording |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63173680A (en) * | 1987-01-14 | 1988-07-18 | Sanko Kaihatsu Kagaku Kenkyusho:Kk | Water dispersion of color developer for pressure-sensitive recording paper and manufacture thereof |
JPH04279386A (en) * | 1991-03-08 | 1992-10-05 | Fuji Photo Film Co Ltd | Manufacture of developer dispersant for pressure-sensitive sheet |
CN110850689A (en) * | 2019-11-18 | 2020-02-28 | 珠海茂逸复印机耗材有限公司 | Self-degradation developer and preparation method thereof |
Also Published As
Publication number | Publication date |
---|---|
JP2889237B2 (en) | 1999-05-10 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
LAPS | Cancellation because of no payment of annual fees |