Dispersant
AssigneeBASF Coatings GmbH
InventorsChintankumar Jayantilal PATEL, Karel HARTLIEB, Holly Marie BLONDIN
Life of this patent
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Abstract
Disclosed herein is a polymer (D) obtained by reacting a) at least one epoxide (E) having an average functionality of ≥3.0 and a number average molar weight in a range of from 250 to 25000 g/mol as determined according to GPC using THE as solvent; b) at least one compound (P) having at least one pigment affinic group, where the pigment affinic group has at least one active hydrogen reactive to an epoxide group; and c) at least one compound(S) having at least one poly alkyleneoxide chain, where the compound(S) having at least one active hydrogen reactive to an epoxide group. Further disclosed herein is a method of using the polymer (D) as an aqueous dispersant for pigments.
Claims15
A polymer (D) obtained by reacting:
- a. at least one epoxide (E) having an average functionality of ≥3.0 and a number average molar weight in a range of from 250 to 25000 g/mol as determined according to GPC using THF as solvent;
- b. at least one compound (P) having at least one pigment affinic group, wherein the pigment affinic group has at least one active hydrogen reactive to an epoxide group;
- and
- c. at least one compound of formula (I)
- wherein Y is selected from the group consisting of hydrogen, linear or branched, substituted or unsubstituted C1-C30 alkyl, linear or branched, substituted or unsubstituted C2-C30 alkenyl or substituted or unsubstituted C6-C10 cycloalkyl, substituted or unsubstituted C7 to C15 arylalkyl, substituted or unsubstituted C6-C10 arylalkyl, and substituted or unsubstituted C6-C10 aryl;
- Z is selected from the group consisting of C1-C6 alkyl and C6-C10 aryl,
- m is in a range of from 5 to 500,
- n is in a range of from 0 to 100,
- X is selected from the group consisting of —OC(O)—R—C(O)OH, —NR1C(O)—R—C(O)OH, —ORC(O)OH, —OC(O)—R—SH, —NHR1 and —O—R—SH;
- wherein R is selected from the group consisting of linear or branched, substituted or unsubstituted C1-C10 alkylene, linear or branched, substituted or unsubstituted C2-C10 alkenylene, substituted or unsubstituted C6-C10 cycloalkylene, and substituted or unsubstituted C6-C10 arylene, and
- R1 is selected from the group consisting of hydrogen, linear or branched, substituted or unsubstituted C1-C10 alkyl, linear or branched, substituted or unsubstituted C2-C10 alkenyl, substituted or unsubstituted C6-C10 cycloalkyl, substituted or unsubstituted C6-C10 aryl, and substituted or unsubstituted C6-C10 arylalkyl.
A process for the preparation of a polymer (D) comprising the steps of:
- a. providing at least one epoxide (E) having an average functionality of ≥3.0 and a number average molar weight in a range of from 250 to 25000 g/mol as determined according to GPC using THE as solvent;
- b. providing at least one compound of formula (I)
- wherein Y is selected from the group consisting of hydrogen, linear or branched, substituted or unsubstituted C1-C30 alkyl, linear or branched, substituted or unsubstituted C2-C30 alkenyl or substituted or unsubstituted C6-C10 cycloalkyl, substituted or unsubstituted C7 to C15 arylalkyl, substituted or unsubstituted C6-C10 arylalkyl and substituted or unsubstituted C6-C10 aryl,
- Z is selected from the group consisting of C1-C6 alkyl and C6-C10 aryl,
- m is in a range of from 5 to 500,
- n is in a range of from 0 to 100,
- X is selected from the group consisting of —OC(O)—R—C(O)OH, —NR1C(O)—R—C(O)OH, —ORC(O)OH, —OC(O)—R—SH, —NHR1 and —O—R—SH;
- wherein R is selected from the group consisting of linear or branched, substituted or unsubstituted C1-C10 alkylene, linear or branched, substituted or unsubstituted C2-C10 alkenylene, substituted or unsubstituted C6-C10 cycloalkylene, and substituted or unsubstituted C6-C10 arylene, and
- R1 is selected from the group consisting of hydrogen, linear or branched, substituted or unsubstituted C1-C10 alkyl, linear or branched, substituted or unsubstituted C2-C10 alkenyl, substituted or unsubstituted C6-C10 cycloalkyl, substituted or unsubstituted C6-C10 aryl, and substituted or unsubstituted C6-C10 arylalkyl to obtain a mixture:
- c. providing at least one compound (P) having at least one pigment affinic group has at least one active hydrogen to obtain a ternary mixture, and
- d. heating the mixture obtained in step c. to a desired temperature to obtain the product polymer (D).
Dependencies are inferred from the claim text.