JPS56131658A - Improvement in dispersion of loading material - Google Patents
Improvement in dispersion of loading materialInfo
- Publication number
- JPS56131658A JPS56131658A JP3470080A JP3470080A JPS56131658A JP S56131658 A JPS56131658 A JP S56131658A JP 3470080 A JP3470080 A JP 3470080A JP 3470080 A JP3470080 A JP 3470080A JP S56131658 A JPS56131658 A JP S56131658A
- Authority
- JP
- Japan
- Prior art keywords
- dispersion
- formaldehyde
- loading material
- paper
- 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
Abstract
PURPOSE: To remove formaldehyde and to increase retentin of a loading material in paper, by the addition of a specified amt. of ammonia (salt) to a dispersion of crosslinked urea-formaldehyde polymer particles, a loading material for paper, followed by the adjustment of pH.
CONSTITUTION: A dispersion of crosslinked urea-formaldehyde polymer particles obtd. from an aqueous soln. of formaldehyde, urea, a carboxylmethylcellulose, etc. is mixed with 0.5W4 equivalents, per mol of the dissolved free formaldehyde, of ammonia or an ammonium salt (e.g., ammonium chloride, mitrate or acetate), and agitated at about 0W90°C for 5W120min. Then a dispersion upeful as a loading material for paper is obtd. by the adjustment of pH to 4W10 with an aqueous solution of caustic soda or sulfuric acid.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3470080A JPS6017387B2 (en) | 1980-03-21 | 1980-03-21 | Method for improving filler dispersion |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3470080A JPS6017387B2 (en) | 1980-03-21 | 1980-03-21 | Method for improving filler dispersion |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS56131658A true JPS56131658A (en) | 1981-10-15 |
JPS6017387B2 JPS6017387B2 (en) | 1985-05-02 |
Family
ID=12421636
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3470080A Expired JPS6017387B2 (en) | 1980-03-21 | 1980-03-21 | Method for improving filler dispersion |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6017387B2 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6136312A (en) * | 1984-07-27 | 1986-02-21 | Nippon Kasei Kk | Production of urea formaldehyde resin |
JPS6136311A (en) * | 1984-07-27 | 1986-02-21 | Nippon Kasei Kk | Production of urea formaldehyde resin |
JPS6180119A (en) * | 1984-09-27 | 1986-04-23 | Matsushita Electric Ind Co Ltd | Projecting optical device |
JPS61127720A (en) * | 1984-11-28 | 1986-06-16 | Mitsui Toatsu Chem Inc | Production of loading material of urea resin |
JPS61147213A (en) * | 1984-12-20 | 1986-07-04 | Matsushita Electric Ind Co Ltd | Compact projection lens |
JPS61180214A (en) * | 1985-02-06 | 1986-08-12 | Matsushita Electric Ind Co Ltd | Compact projection lens |
-
1980
- 1980-03-21 JP JP3470080A patent/JPS6017387B2/en not_active Expired
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6136312A (en) * | 1984-07-27 | 1986-02-21 | Nippon Kasei Kk | Production of urea formaldehyde resin |
JPS6136311A (en) * | 1984-07-27 | 1986-02-21 | Nippon Kasei Kk | Production of urea formaldehyde resin |
JPH0542455B2 (en) * | 1984-07-27 | 1993-06-28 | Nippon Kasei Chem | |
JPH0542454B2 (en) * | 1984-07-27 | 1993-06-28 | Nippon Kasei Chem | |
JPS6180119A (en) * | 1984-09-27 | 1986-04-23 | Matsushita Electric Ind Co Ltd | Projecting optical device |
JPS61127720A (en) * | 1984-11-28 | 1986-06-16 | Mitsui Toatsu Chem Inc | Production of loading material of urea resin |
JPH0466248B2 (en) * | 1984-11-28 | 1992-10-22 | Mitsui Toatsu Chemicals | |
JPS61147213A (en) * | 1984-12-20 | 1986-07-04 | Matsushita Electric Ind Co Ltd | Compact projection lens |
JPS61180214A (en) * | 1985-02-06 | 1986-08-12 | Matsushita Electric Ind Co Ltd | Compact projection lens |
Also Published As
Publication number | Publication date |
---|---|
JPS6017387B2 (en) | 1985-05-02 |
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