JPS5657852A - Preparation of filler for paper manufacturing - Google Patents
Preparation of filler for paper manufacturingInfo
- Publication number
- JPS5657852A JPS5657852A JP13355579A JP13355579A JPS5657852A JP S5657852 A JPS5657852 A JP S5657852A JP 13355579 A JP13355579 A JP 13355579A JP 13355579 A JP13355579 A JP 13355579A JP S5657852 A JPS5657852 A JP S5657852A
- Authority
- JP
- Japan
- Prior art keywords
- gypsum
- filler
- phosphoric acid
- product
- condensed phosphoric
- 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
Landscapes
- Paper (AREA)
- Pigments, Carbon Blacks, Or Wood Stains (AREA)
Abstract
PURPOSE: To impart water resistance to gypsum obtained as a by-product of exhaust gas desulfurization, and to utilize the gypsum as a filler of paper, by treating gypsum dihydrate in an aqueous solution of a condensed phosphoric acid alkali of alkaline earth metal salt heated to a specific temperature, under specific conditions.
CONSTITUTION: An aqueous solution of a condensed phosphoric acid alkali or alkaline earth metal salt is heated at 50W90°C. Gypsum dihydrate e.g. obtained as a by-product of exhaust gas desulfurization, etc. is added to and dispersed in the solution and stirred, e.g. for 5min. The dispersed gypsum is separated by filtration. The molar ratio of the gypsum dihydrate to the condensed phosphoric acid is 1:(0.006W0.45), perf. 1:(0.01W0.3).
EFFECT: Since the product has a Mohs hardness of as low as 1W2, it can be used as a filler of paper giving low abrasion to the wire of a paper machine or a printing plate of a printer.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13355579A JPS5657852A (en) | 1979-10-18 | 1979-10-18 | Preparation of filler for paper manufacturing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13355579A JPS5657852A (en) | 1979-10-18 | 1979-10-18 | Preparation of filler for paper manufacturing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5657852A true JPS5657852A (en) | 1981-05-20 |
Family
ID=15107540
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13355579A Pending JPS5657852A (en) | 1979-10-18 | 1979-10-18 | Preparation of filler for paper manufacturing |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5657852A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009057667A (en) * | 2007-09-03 | 2009-03-19 | Daio Paper Corp | Newsprint paper |
| JPWO2008026672A1 (en) * | 2006-08-30 | 2010-01-21 | ユニチカ株式会社 | Gas barrier layer forming coating and gas barrier laminate |
| RU2471835C1 (en) * | 2011-06-01 | 2013-01-10 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Ярославский государственный технический университет" | Method of producing anticorrosive pigment |
-
1979
- 1979-10-18 JP JP13355579A patent/JPS5657852A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPWO2008026672A1 (en) * | 2006-08-30 | 2010-01-21 | ユニチカ株式会社 | Gas barrier layer forming coating and gas barrier laminate |
| US8247068B2 (en) | 2006-08-30 | 2012-08-21 | Unitika Ltd. | Coating material for forming gas-barrier layer and gas-barrier multilayer body |
| JP2009057667A (en) * | 2007-09-03 | 2009-03-19 | Daio Paper Corp | Newsprint paper |
| RU2471835C1 (en) * | 2011-06-01 | 2013-01-10 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Ярославский государственный технический университет" | Method of producing anticorrosive pigment |
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