Polymer compositions and use of these polymer compositions as viscosity modifiers

Patent metadata

Field	Value
Publication number	US-10730967-B2
Application number	US-201515536525-A
Country	US
Kind code	B2
Filing date	Dec 15, 2015
Priority date	Dec 16, 2014
Publication date	Aug 4, 2020
Grant date	Aug 4, 2020

Abstract

The present invention relates to novel polymer compositions, to a process for their manufacturing, to the use of said polymer compositions for modifying the viscosity of aqueous compositions, and to water-borne coating compositions containing the novel polymer compositions as thickeners. The polymer compositions comprise a polymer material which is obtainable by reacting: a) a polymer P1 having at least one functional group of the formula (I), where k is an integer from 0 to 4; n is 0 or 1 p is an integer from 1 to 10, the number average of p being from 1.5 to 10; Q is a divalent moiety selected from the group consisting of —O— and —NH—; P is a p-valent hydrophilic neutral polymer radical; and R 1 is as defined in the claims; with b) a succinic anhydride of the formula (II) where R is C 4 -C 24 -alkyl or C 4 -C 24 -alkenyl.

First claim

We claim:

1. A polymer composition comprising a polymer material which is prepared by reacting
a) a polymer P1 of the formula (I):

with
b) a succinic anhydride of the formula (II):

to obtain a polymer composition comprising at least one of polymers of formulae (IVa) and (IVb):

wherein
k is an integer from 0 to 4;
n is 0 or 1
p is an integer from 1 to 10, wherein a number average of p is from 1.5 to 10;
Q is a divalent moiety selected from the group consisting of —O— and —NH—;
P is a p-valent hydrophilic neutral polymer radical;
R 1 is independently selected from the group consisting of halogen, COOCH 3 , —N(C 1 -C 6 -alkyl) 2 , —NO 2 , —S(═O) 2 R 2 , C 1 -C 4 -alkyl, C 1 -C 4 -alkoxy, aryloxy, aryl, heteroaryl, where aryl, hetaryl and aryloxy are unsubstituted or substituted by 1, 2, 3 or 4 radicals selected from the group consisting of —OH, —COOCH 3 , —N(C 1 -C 6 -alkyl) 2 , —NO 2 , —S(═O) 2 R 2 , C 1 -C 4 -alkyl, C 1 -C 4 -alkoxy and halogen;
R 2 is selected from the group consisting of —NH 2 , —NH(C 1 -C 6 -alkyl), —N(C 1 -C 6 -alkyl) 2 , C 1 -C 4 -alkoxy, aryl and heteroaryl, where aryl and hetaryl are unsubstituted or substituted by 1, 2, 3 or 4 radicals selected from the group consisting of C 1 -C 4 -alkyl, C 1 -C 4 -alkoxy and halogen;

R is C 4 -C 24 -alkyl or C 4 -C 24 -alkenyl; and
# indicates the point of attachment to the terminus and/or to the polymer backbone of the polymer radical P.

2. The polymer composition as claimed in claim 1 , wherein P is a p-valent polymer radical derived from a linear or branched poly-(C 2 -C 4 -alkylene oxide) polymer.

3. The polymer composition as claimed in claim 1 , wherein P is a poly(ethylene oxide), a poly(propylene oxide) or a poly(ethylene oxide-co-propylene oxide).

4. The polymer composition as claimed in claim 1 , wherein the number average of p is from 1.8 to 3.

5. The polymer composition as claimed in claim 1 , wherein:
k is 0;
n is 0; and
Q is —O—.

6. The polymer composition as claimed in claim 1 , wherein a number average molecular weight of the polymer radical P is from 500 to 50000 Dalton.

7. The polymer composition as claimed in claim 1 , wherein R is linear C 4 -C 24 -alkyl or linear C 4 -C 24 -alkenyl.

8. The polymer composition as claimed in claim 1 , wherein R is C 6 -C 18 -alkyl or C 6 -C 18 -alkenyl.

9. The polymer composition as claimed in claim 1 , wherein the polymer P1 and the succinic anhydride of the formula (II) are reacted in a relative amount such that the molar ratio of —NH 2 groups in the polymer P1 to the anhydride groups of the succinic anhydride of formula (II) is in the range from 1:1 to 1:5.

10. The polymer composition as claimed in claim 1 , wherein the polymer P1 is obtained by reacting a polymer of the formula (III):
P-(Q-H) p   (III)

with a compound of the formulae (V), (VI) or (VII):

wherein p, k, P, Q and R 1 are as defined in claim 1 , and
R L is hydrogen or a hydrocarbon radical having 1 to 8 carbon atoms.

11. The polymer composition as claimed in claim 1 , further comprising a non-ionic surfactant.

12. The polymer composition as claimed in claim 1 , which is in the form of an aqueous solution of the polymer material.

13. The polymer composition as claimed in claim 1 , which has a pH in the range from 5.0 to 10.0.

14. A process for the manufacturing of the polymer composition as claimed in claim 1 , which comprises
reacting the polymer P1 with a succinic anhydride of the formula (II).

15. A viscosity modifier comprising the polymer composition of claim 1 .

16. The viscosity modifier of claim 15 , wherein the polymer composition is a thickener in a water-borne coating composition.

17. A water-borne coating composition, comprising the polymer composition of claim 1 and a polymer P2 in the form of a polymer latex.

18. The coating composition of claim 17 , comprising the polymer composition in such an amount that the polymer material of the polymer composition is from 0.1 to 5% by weight, based on the polymer P2.

19. The coating composition of claim 17 , comprising
i) 1 to 70% by weight, based on the total weight of the coating composition, of at least one fine particulate solid material, selected from the group consisting of pigments and fillers;
ii) 5 to 40% by weight, based on the total weight of the coating composition, of a polymer P2 in the faun of a polymer latex and calculated as solid polymer P2;
iii) 0.01 to 3% by weight, based on the total weight of the coating composition, of the polymer composition, calculated as polymer material; and
iv) 20 to 93% by weight, based on the total weight of the coating composition, of water.

Assignees

• Basf Se

Inventors

• Kou Huiguang
• Auschra Clemens
• Perera-Diez Dario

Classifications

• C08G63/672 Primary

  Dicarboxylic acids and dihydroxy compounds · CPC title

• C08G65/48

  Polymers modified by chemical after-treatment · CPC title

• C09D5/027

  Dispersing agents (anti-settling agents C09D7/45) · CPC title

• C08G65/33344

  containing carbamate group · CPC title

• C09D7/43

  Thickening agents · CPC title