Dispersants

• US 9,580,616 B2
• Filed: 02/06/2012
• Issued: 02/28/2017
• Est. Priority Date: 02/10/2011
• Status: Expired due to Fees

• Current Assignee: Lamberti S.p.A.
• Original Assignee: Lamberti S.p.A.
• Inventors: Fornara, Dario, Nappa, Alan, Verzotti, Tamara, Prampolini, Paolo, Crespi, Stefano, Floridi, Giovanni, Li Bassi, Giuseppe
• Primary Examiner(s): Chung, Susannah
• Assistant Examiner(s): Butcher, Robert T
• Application Number:
  US13/984,711
• Publication Number:
  US 20130312636A1
• Time in Patent Office: 1,849 Days
• Field of Search: None
• US Class Current: 1/1
• CPC Class Codes: C04B 2103/408 Dispersants
• CPC Class Codes: C04B 2103/54 Pigments; Dyes
• CPC Class Codes: C04B 33/00 Clay-wares monolithic refractories or refractory mortars C04B35/66; porous products C04B38/00
• CPC Class Codes: C04B 41/009 characterised by the material treated
• CPC Class Codes: C04B 41/4539 as a emulsion, dispersion or suspension
• CPC Class Codes: C04B 41/81 Coating or impregnation
• CPC Class Codes: C08G 73/024 Polyamines containing oxygen in the form of ether bonds in the main chain
• CPC Class Codes: C08L 79/02 Polyamines
• CPC Class Codes: C09D 11/326 characterised by the pigment dispersant
• CPC Class Codes: C09D 11/38 characterised by non-macromolecular additives other than solvents, pigments or dyes
• CPC Class Codes: C09D 7/45 Anti-settling agents

Abstract

Compound of Formula (1); wherein: Z^w is an organic radical comprising w amino groups, in which w is a number and 5≦w≦3,000; A and B are independently oxy-C₁-C₂₀-alkylene carbonyl groups or oxy-C₂-C₂₀-alkenylene carbonyl groups derived from hydroxy carboxylic acids or lactones; T is hydrogen or R—CO—, where R is a C₁-C₅₀ hydrocarbyl group; Y is a C₃-C₄-alkylene radical linked to an amino group of Z^w; Y′ is an ionic salt link between an amino group of Z^w and the terminal carbonyl of (A)_r-(B)_p-T; r and p are independently numbers between 0 and 50 and r+p>2; s, m and v are numbers; 0.99w≦s+m≦2w; and 0.3w≦s+v≦2w are suitable as dispersants and milling aids.

Claims

1. A chemical compound having a general formula:

2. The chemical compound of claim 1 wherein the organic radical Z^w is the residue of a polyethyleneimine.

3. The chemical compound of claim 2 wherein the organic radical Z^w is the residue of polyethyleneimine having a number molecular weight of from about 500 to about 60,000.

4. The chemical compound of claim 2 wherein Y is —

(CH₃)CH—

CH₂—

.

5. The chemical compound of claim 1 wherein r+p>

3.

6. The chemical compound of claim 1 wherein 0.5w<

s+v<

w+2.

7. The chemical compound of claim 1 wherein 0.99w<

s+m<

1.2 w.

8. The chemical compound of claim 4 wherein s=0.

9. A liquid composition comprising from about 5 to about 95% by weight of a particulate solid and from about 0.5% to about 100% by weight based on the particulate solid of a chemical compound having a general formula:

10. The liquid composition of claim 9 wherein the particulate solid is an inorganic pigment.

11. The liquid composition of claim 9 wherein the particulate solid is a ceramic pigment.

12. The liquid composition of claim 11 wherein the chemical compound comprises:

from about 5 to about 60% by weight of ceramic pigment, and

from about 2 to about 15% by weight based on the ceramic pigment of a chemical compound having a general formula;

13. The liquid composition of claim 12 wherein the chemical compound comprises:

from 15 to 45% by weight of ceramic pigment, and

from 4 to 10% by weight based on the ceramic pigment of a chemical compound having a general formula;

14. The liquid composition of claim 9 wherein the organic radical Z^w is the residue of a polyethyleneimine.

15. The liquid composition of claim 14 wherein the organic radical Z^w is the residue of polyethyleneimine having a number molecular weight of from about 500 to about 60,000.

16. The liquid composition of claim 14 wherein Y is —

(CH₃)CH—

CH₂—

.

17. The liquid composition of claim 14 wherein r+p>

3.

18. The liquid composition of claim 14 wherein 0.5w<

s+v<

w+2.

19. The liquid composition of claim 14 wherein 0.99w<

s+m<

1.2 w.

20. A chemical compound having a general formula: