Claims
- 1. A water-soluble copolymer, comprising 50 to 99.5 mol% of repeating units represented by the general formula I: ##STR12## wherein, R.sup.1 denotes A hydrogen atom or methyl group and X a hydrogen atom, alkali metal atom, alkaline earth metal atom, ammonium group or organic amine group, and 50 to 0.5 mol% of repeating units represented by the general formula II: ##STR13## wherein, p denotes an integer of the value of 1 to 4, q and r independently denote O or an integer of the value of 1 to 100, R.sup.2 and R.sup.3 independently denote an alkylene group of 2 to 4 carbon atoms, Y denotes a hydroxyl group, and Z denotes a monovalent sulfonic acid group or an alkali metal salt thereof.
- 2. A copolymer according to claim 1, wherein q and r independently denote 0 or an integer having the value of 1 to 20.
- 3. A copolymer according to claim 1, wherein X denotes an alkali metal atom or ammonium group.
- 4. A copolymer according to claim 1, wherein X denotes an alkali metal atom.
- 5. A copolymer according to claim 1, wherein R.sup.1 denotes a hydrogen atom.
- 6. A copolymer according to claim 1, wherein R.sup.1 denotes a hydrogen atom and X an alkali metal atom.
- 7. A copolymer according to claim 1, wherein p denotes 1 or 4.
- 8. A copolymer according to claim 7, wherein q and r independently denote 0.
- 9. A copolymer according to claim 1, wherein the repeating units represented by the general formula I account for 50 to 98 mol% and the repeating units represented by the general formula II for 50 to 2 mol%.
- 10. A method for the manufacture of a water-soluble copolymer comprising 50 to 99.5 mol% of repeating units represented by the general formula I: ##STR14## wherein, R.sup.1 and X are as defined above, and 50 to 0.5 mol% of repeating units represented by the general formula II: ##STR15## wherein, p, q, r, R.sup.2, R.sup.3, Y and Z are as defined above, which method comprises copolymerizing 50 to 99.5 moles of at least one acrylic acid-based monomer represented by the formula III: ##STR16## wherein, R.sup.1 and X are as defined above, and 0.5 to 50 moles of at least one allyl ether-based monomer represented by the general formula IV: ##STR17## wherein, p, q, r, R.sup.2, R.sup.3, Y and Z are as defined above.
- 11. A method according to claim 10, wherein the reaction is carried out in the presence of 0.05 to 20% by weight, based on the total amount of the monomers, of a polymerization initiator at a temperature in the range of 50.degree. to 200.degree. C.
- 12. A method according to claim 11, wherein the reaction is carried out at a temperature in the range of 80.degree. to 150.degree. C.
- 13. A method according to claim 10, wherein q and r independently denote 0 or an integer having the value of 1 to 20.
- 14. A method according to claim 10, wherein X denotes an alkali metal atom or ammonium group.
- 15. A method according to claim 10, wherein X denotes an alkali metal atom.
- 16. A method according to claim 10, wherein R.sup.1 denotes a hydrogen atom.
- 17. A method according to claim 15, wherein R.sup.1 denotes a hydrogen atom and X an alkali metal atom.
- 18. A method according to claim 15, wherein p denotes 1 or 4.
- 19. A method according to claim 18, wherein q and r independently denote 0.
- 20. A method according to claim 15, wherein the repeating units represented by the general formula I account for 50 to 98 mol% and the repeating units represented by the general formula II or 50 to 2 mol%.
- 21. A scale inhibitor having as main component thereof the water-soluble copolymer set forth in claim 1.
- 22. A pigment dispersant having as main component thereof the water-soluble copolymer set forth in claim 1.
Priority Claims (4)
Number |
Date |
Country |
Kind |
56-105027 |
Jul 1981 |
JPX |
|
56-105635 |
Jul 1981 |
JPX |
|
57-28863 |
Feb 1982 |
JPX |
|
57-35854 |
Mar 1982 |
JPX |
|
Parent Case Info
This application is a continuation of application Ser. No. 395,883, filed 7/7/82 now abandoned.
US Referenced Citations (1)
Number |
Name |
Date |
Kind |
4267103 |
Cohen |
May 1981 |
|
Foreign Referenced Citations (1)
Number |
Date |
Country |
1103947 |
Feb 1968 |
GBX |
Continuations (1)
|
Number |
Date |
Country |
Parent |
395883 |
Jul 1982 |
|