JPS5545717A - Pulverized sodium polyacrylate and its preparation - Google Patents
Pulverized sodium polyacrylate and its preparationInfo
- Publication number
- JPS5545717A JPS5545717A JP11806078A JP11806078A JPS5545717A JP S5545717 A JPS5545717 A JP S5545717A JP 11806078 A JP11806078 A JP 11806078A JP 11806078 A JP11806078 A JP 11806078A JP S5545717 A JPS5545717 A JP S5545717A
- Authority
- JP
- Japan
- Prior art keywords
- sodium polyacrylate
- pref
- pulverized sodium
- pulverized
- preparation
- 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
Landscapes
- Processes Of Treating Macromolecular Substances (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
PURPOSE: To obtain a high-purity pulverized sodium polyacrylate free from increase of eligomers and intrinsic viscosity drop, useful for medical ointments, etc., by pulverizing sodium polyacrylate under a freezed state.
CONSTITUTION: The objective pulverized sodium polyacrylate can be obtained by finaly grinding sodium polyacrylate having an average particle size of 7W0.2mm (pref. 3W0.3mm) under a freezed state, e.g., at ≤-10°C (pref. ≤-20°C). According to the above procedure, use of a polyacrylic acid as a raw material containing ≤5wt% (pref. ≤4wt%) of oligomers gives a pulverized sodium polyacrylate having an average particle size ≤80μm and an aligomer content ≤5wt%.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11806078A JPS5545717A (en) | 1978-09-27 | 1978-09-27 | Pulverized sodium polyacrylate and its preparation |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11806078A JPS5545717A (en) | 1978-09-27 | 1978-09-27 | Pulverized sodium polyacrylate and its preparation |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5545717A true JPS5545717A (en) | 1980-03-31 |
JPS6229448B2 JPS6229448B2 (en) | 1987-06-26 |
Family
ID=14727015
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11806078A Granted JPS5545717A (en) | 1978-09-27 | 1978-09-27 | Pulverized sodium polyacrylate and its preparation |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5545717A (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58123190U (en) * | 1982-02-15 | 1983-08-22 | セイキ住工株式会社 | roll-up door |
JPS58123189U (en) * | 1982-02-15 | 1983-08-22 | セイキ住工株式会社 | roll-up door |
JPS5980093U (en) * | 1982-11-19 | 1984-05-30 | 株式会社日本アルミ | roll blind |
JPS61172985A (en) * | 1985-01-28 | 1986-08-04 | 昭和アルミニウム株式会社 | Changer for ornament or function in window and wall, etc. ofbuilding |
JPS6274906A (en) * | 1985-09-30 | 1987-04-06 | Agency Of Ind Science & Technol | Production of molding from metal salt of polyacrylic acid |
US4826638A (en) * | 1986-07-15 | 1989-05-02 | Rehau Ag+Co. | Process of using hardened elastomer filler for elastomer material |
US4917834A (en) * | 1988-11-16 | 1990-04-17 | General Technology Applications, Inc. | Method for forming homogeneous blends of particulate materials |
JP2002348162A (en) * | 2001-05-30 | 2002-12-04 | Taiheiyo Cement Corp | Manufacturing method of powdery cement dispersant |
-
1978
- 1978-09-27 JP JP11806078A patent/JPS5545717A/en active Granted
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58123190U (en) * | 1982-02-15 | 1983-08-22 | セイキ住工株式会社 | roll-up door |
JPS58123189U (en) * | 1982-02-15 | 1983-08-22 | セイキ住工株式会社 | roll-up door |
JPS642933Y2 (en) * | 1982-02-15 | 1989-01-25 | ||
JPS642932Y2 (en) * | 1982-02-15 | 1989-01-25 | ||
JPS5980093U (en) * | 1982-11-19 | 1984-05-30 | 株式会社日本アルミ | roll blind |
JPS61172985A (en) * | 1985-01-28 | 1986-08-04 | 昭和アルミニウム株式会社 | Changer for ornament or function in window and wall, etc. ofbuilding |
JPS6274906A (en) * | 1985-09-30 | 1987-04-06 | Agency Of Ind Science & Technol | Production of molding from metal salt of polyacrylic acid |
JPH0159091B2 (en) * | 1985-09-30 | 1989-12-14 | Kogyo Gijutsuin | |
US4826638A (en) * | 1986-07-15 | 1989-05-02 | Rehau Ag+Co. | Process of using hardened elastomer filler for elastomer material |
US4917834A (en) * | 1988-11-16 | 1990-04-17 | General Technology Applications, Inc. | Method for forming homogeneous blends of particulate materials |
JP2002348162A (en) * | 2001-05-30 | 2002-12-04 | Taiheiyo Cement Corp | Manufacturing method of powdery cement dispersant |
JP4608132B2 (en) * | 2001-05-30 | 2011-01-05 | 太平洋セメント株式会社 | Method for producing powdered cement dispersant |
Also Published As
Publication number | Publication date |
---|---|
JPS6229448B2 (en) | 1987-06-26 |
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