Claims
- 1. An organic solvent-soluble polymer which is a polyacrylic acid or a poly(C.sub.1-4 -alkyl) acrylic acid wherein at least 30% and less than 70% of the --COOH groups are converted to --COY groups wherein
- Y is either --OR.sup.1 or --NR.sup.2 R.sup.3 ;
- R.sup.1 is C.sub.6-18 -alkyl or cycloalkyl;
- R.sup.2 is hydrogen, alkyl or cycloalkyl; and
- R.sup.3 is alkyl or cycloalkyl;
- the total number of carbon atoms in R.sup.2 combined with R.sup.3 being at least 6 and not greater than 14.
- 2. A polymer as claimed in claim 1 of formula 1 ##STR6## wherein each, independently, of the n groups represented by R is H or C.sub.1-4 -alkyl;
- each, independently, of the n groups represented by Y is OH, --OR.sup.1 or --NR.sup.2 R.sup.3 ; and
- n is from 200 to 25,000;
- provided that the percentage of groups in which Y is other than OH is greater than 30% and less than 70% of the total number of groups represented by Y.
- 3. A polymer as claimed in claim 2 wherein n is from 800 to 2000.
- 4. A polymer as claimed in claim 2 wherein R is H.
- 5. A polymer as claimed in claim 1 wherein Y is OR.sup.1.
- 6. A polymer as claimed in claim 1 wherein R.sup.1 is n-hexyl, isohexyl, n-octyl, 2-ethylhexyl, 3,7-dimethyloctyl, n-nonyl, n-decyl, n-dodecyl, n-tetradecyl, n-hexadecyl or n-octadecyl.
- 7. A process for making a polymer as claimed in claim 1 which comprises reacting a polyacrylic acid with R.sup.1 --OH and/or NHR.sup.2 R.sup.3.
- 8. A formulation comprising a polymer, a resin and a non aqueous medium, the polymer being an organic solvent soluble polyacrylic acid or poly(C.sub.1-4 -alkyl) acrylic acid wherein at least 30% and less than 95% of the --COOH groups are converted to --COY groups wherein
- Y is either --OR.sup.1 or --NR.sup.2 R.sup.3 ;
- R.sup.1 is C.sub.6-18 -alkyl or cycloalkyl;
- R.sup.2 is hydrogen, alkyl or cycloalkyl; and
- R.sup.3 is alkyl or cycloalkyl;
- provided that the total number of carbon atoms represented by R.sup.2 and R.sup.3 is from 6 to 18.
- 9. A formulation comprising a polymer, a resin, a particulate solid and an organic solvent-soluble non-aqueous medium, the polymer being a polyacrylic acid or poly(C.sub.1-4 -alkyl) acrylic acid wherein at least 30% and less than 95% of the --COOH groups are converted to --COY groups wherein
- Y is either --OR.sup.1 or --NR.sup.2 R.sup.3 ;
- R.sup.1 is C.sub.6-18 -alkyl or cycloalkyl;
- R.sup.2 is hydrogen, alkyl or cycloalkyl; and
- R.sup.3 is alkyl or cycloalkyl;
- provided that the total number of carbon atoms represented by R.sup.2 and R.sup.3 is from 6 to 18.
- 10. A composition comprising
- a) a polymer; and
- b) a dispersant comprising a poly(C.sub.2-4 -alkyleneimine) carrying at least two mono- or poly-(carbonyl-C.sub.1-7 -alkyleneoxy) chains, the polymer a) being an organic solvent-soluble polyacrylic acid or poly(C.sub.1-4 -alkyl) acrylic acid wherein at least 30% and less than 95% of the --COOH groups are converted to --COY groups wherein
- Y is either --OR.sup.1 or --NR.sup.2 R.sup.3 ;
- R.sup.1 is C.sub.6-18 -alkyl or cycloalkyl;
- R.sup.2 is hydrogen, alkyl or cycloalkyl; and
- R.sup.3 is alkyl or cycloalkyl;
- provided that the total number of carbon atoms represented by R.sup.2 and R.sup.3 is from 6 to 18.
- 11. A composition according to claim 10 wherein component b) is obtainable by reacting together .epsilon.-caprolactone, polyethyleneimine having a MW of about 20,000 and lauric acid.
- 12. A composition comprising
- a) a polymer; and
- b) a dispersant which is the reaction product of a polyalkyleneimine and a polyester derived from a hydroxycarboxylic acid of formula 2
- HO--X--COOH 2
- wherein
- X is a divalent saturated or unsaturated aliphatic group containing at least 8 carbon atoms and in which there are at least 4 carbon atoms between the hydroxy and carboxylic acid groups, or from a mixture of such hydroxycarboxylic acid and a carboxylic acid which is free from hydroxy groups, the polymer a) being an organic solvent soluble polyacrylic acid or poly(C.sub.1-4 -alkyl) acrylic acid wherein at least 30% and less than 95% of the --COOH groups are converted to --COY groups wherein
- Y is either --OR.sup.1 or --NR.sup.2 R.sup.3 ;
- R.sup.1 is C.sub.6-18 -alkyl or cycloalkyl;
- R.sup.2 is hydrogen, alkyl or cycloalkyl; and
- R.sup.3 is alkyl or cycloalkyl;
- provided that the total number of carbon atoms represented by R.sup.2 and R.sup.3 is from 6 to 18.
- 13. A composition as claimed in claim 12 wherein component b) is obtainable by reacting approximately 3.3 weight equivalents of poly(12-hydroxystearic acid) and 1 weight equivalent of poly(ethyleneimine) with a MW of about 20,000.
- 14. A composition comprising
- a) a polymer; and
- b) a dispersant of the formula 3 or 4;
- [A.sup.1 --CO--(O--B--CO).sub.p ].sub.k --D--L.sub.q M 3
- ML--[(O--B--CO).sub.p --X--D.sup.1 ].sub.k 4
- wherein
- A.sup.1 is H, a hydrocarbon group or a hydrocarbon group substituted by a group selected from halogen, hydroxy, amino, alkoxy;
- B is a divalent hydrocarbon group;
- p is from 1 to 100;
- k is 1 to 2;
- C is a polyvalent linking group;
- L is a phosphate, phosphonate, sulphate, sulphonate or methylenecarboxylate provided that the methylene group is not attached to a carbon atom of an unsubstituted hydrocarbon chain containing two or more carbon atoms;
- q is 1 or 2;
- M is a cation;
- D.sup.1 is an aliphatic or alicyclic group;
- X is O, S or NR; and
- R is H, alkyl, alkenyl, cycloalkyl or phenyl, the polymer a) being an organic solvent-soluble polyacrylic acid or poly(C.sub.1-4 -alkyl) acrylic acid wherein at least 30% and less than 95% of the --COOH groups are converted to --COY groups wherein
- Y is either --OR.sup.1 or --NR.sup.2 R.sup.3 ;
- R.sup.1 is C.sub.6-18 -alkyl or cycloalkyl;
- R.sup.2 is hydrogen, alkyl or cycloalkyl; and
- R.sup.3 is alkyl or cycloalkyl;
- provided that the total number of carbon atoms represented by R.sup.2 and R.sup.3 is from 6 to 18.
- 15. The method of modifying the rheology of a non-aqueous formulation which comprises adding to said formulation, an effective amount of an organic solvent soluble polymer which is the polymer being a polyacrylic acid or poly(C.sub.1-4 -alkyl) acrylic acid wherein at least 30% and less than 95% of the --COOH groups are converted to --COY groups wherein
- Y is either --OR.sup.1 or --NR.sup.2 R.sup.3 ;
- R.sup.1 is C.sub.6-18 -alkyl or cycloalkyl;
- R.sup.2 is hydrogen, alkyl or cycloalkyl; and
- R.sup.3 is alkyl or cycloalkyl;
- provided that the total number of carbon atoms represented by R.sup.2 and R.sup.3 is from 6 to 18.
- 16. A coating composition comprising pigment, a resin, a non-aqueous medium and the polymer of claim 1, said polymer functioning as a rheology modifier to minimize sag.
Priority Claims (1)
Number |
Date |
Country |
Kind |
9422093 |
Nov 1994 |
GBX |
|
Parent Case Info
This application is the national phase of international application PCT/GB95/02433, filed Oct. 16, 1995 which designated the U.S.
PCT Information
Filing Document |
Filing Date |
Country |
Kind |
102e Date |
371c Date |
PCT/GB95/02433 |
10/16/1995 |
|
|
4/4/1997 |
4/4/1997 |
Publishing Document |
Publishing Date |
Country |
Kind |
WO96/14344 |
5/17/1996 |
|
|
US Referenced Citations (18)
Foreign Referenced Citations (7)
Number |
Date |
Country |
583 086 |
Feb 1994 |
EPX |
2 279 781 |
Feb 1976 |
FRX |
2 693 202 |
Jan 1994 |
FRX |
1 510 190 |
May 1978 |
GBX |
2 001 083 |
Jan 1979 |
GBX |
2 185 259 |
Jul 1987 |
GBX |
9207553 |
May 1993 |
WOX |
Non-Patent Literature Citations (2)
Entry |
Derwent Abstracts, SU 1231842 and SU 717078. |
Derwent Abstracts of SU 717078; SU 1231842 and WO 92/07553. |