JPS564602A - Novel cationic starch - Google Patents
Novel cationic starchInfo
- Publication number
- JPS564602A JPS564602A JP8032479A JP8032479A JPS564602A JP S564602 A JPS564602 A JP S564602A JP 8032479 A JP8032479 A JP 8032479A JP 8032479 A JP8032479 A JP 8032479A JP S564602 A JPS564602 A JP S564602A
- Authority
- JP
- Japan
- Prior art keywords
- reaction
- starch
- aqueous solution
- addition
- cationic starch
- 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
- Polysaccharides And Polysaccharide Derivatives (AREA)
- Other Resins Obtained By Reactions Not Involving Carbon-To-Carbon Unsaturated Bonds (AREA)
- Paper (AREA)
Abstract
PURPOSE: A cationic starch, having a strong hydrogen-bond group and useful as a paper reinforcing agent and a fluocculant, which is obtained by grafting a product generated by the Hofmann reaction from a polyacrylamide, with a starch solution, before the completion of the reaction.
CONSTITUTION: Hofmann reaction is caused, by the addition of an alkali metal hydroxide and an alkali metal salt of hypohalogenous acid, cooled to -5W20°C, to an aqueous solution of a copolymer, containing at least 50mol of polyacrylamide or acrylamide, the 10wt% aqueous solution of which has a viscosity of 30000W 10000cp at 25°C, by Brookfield viscometer. When the temperature of the reaction system rises 1/2W9/10 of the ultimate temperature rise, the reaction is continued, with addition of an aqueous solution of starch (derivative) of 5W50wt% concentration. Thereby the acrylamide (co)polymer is grafted and a portion of carbamoyl groups is modified to amino groups. When the viscosity of the system reaches 300W 30000cp, the reaction is ceased by the addition of a reducing agent, to obtain a cationic starch.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8032479A JPS564602A (en) | 1979-06-26 | 1979-06-26 | Novel cationic starch |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8032479A JPS564602A (en) | 1979-06-26 | 1979-06-26 | Novel cationic starch |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS564602A true JPS564602A (en) | 1981-01-19 |
Family
ID=13715072
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8032479A Pending JPS564602A (en) | 1979-06-26 | 1979-06-26 | Novel cationic starch |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS564602A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57191394A (en) * | 1981-05-19 | 1982-11-25 | Rei Tech Inc | Papermaking method using lignin like substance and cationic polymer |
JPS57191395A (en) * | 1981-05-19 | 1982-11-25 | Rei Tech Inc | Papermaking method |
JPS58197397A (en) * | 1982-05-10 | 1983-11-17 | 日澱化學株式会社 | Production of papermaking size agent |
JPS604553A (en) * | 1983-06-23 | 1985-01-11 | Konan Kagaku Kogyo Kk | Water-soluble polymer composition |
JPS6065195A (en) * | 1983-09-19 | 1985-04-13 | 星光化学工業株式会社 | Enhancement of filler yield in papermaking process |
-
1979
- 1979-06-26 JP JP8032479A patent/JPS564602A/en active Pending
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57191394A (en) * | 1981-05-19 | 1982-11-25 | Rei Tech Inc | Papermaking method using lignin like substance and cationic polymer |
JPS57191395A (en) * | 1981-05-19 | 1982-11-25 | Rei Tech Inc | Papermaking method |
JPS58197397A (en) * | 1982-05-10 | 1983-11-17 | 日澱化學株式会社 | Production of papermaking size agent |
JPH0345158B2 (en) * | 1982-05-10 | 1991-07-10 | Nippon Starch Refining | |
JPS604553A (en) * | 1983-06-23 | 1985-01-11 | Konan Kagaku Kogyo Kk | Water-soluble polymer composition |
JPS6065195A (en) * | 1983-09-19 | 1985-04-13 | 星光化学工業株式会社 | Enhancement of filler yield in papermaking process |
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