# US 9,040,624 B2 · Low VOC colorants with non tip drying

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- Number: US 9,040,624 B2
- Document ID: US9040624B2
- Status: Granted
- Kind: B2
- Application number: 13/380,229
- Filed: 2009-10-01
- Published: 2012-04-19
- Granted: 2015-05-26
- Earliest claimed: 2009-07-02
- Assignees: BASF SE
- Applicants: Nilanjan Chakrabarti; Lee E. Young; Nancy Almasarweh; Shakera Thamanna; Christopher Flanders; William M. Wunch; Amrit P. Bindra
- Inventors: Nilanjan Chakrabarti; Lee E. Young; Nancy Almasarweh; Shakera Thamanna; Christopher Flanders; William M. Wunch; Amrit P. Bindra
- Web page: https://patentgrep.com/patent/US9040624B2

## CPC

- C09D 17/001: {in aqueous medium (C09D17/003, C09D17/004 take precedence)}
- C09B 67/009: {polymeric dispersing agent}
- C09C 1/02: Compounds of alkaline earth metals or magnesium {(C09C1/0003, C09C1/0009, C09C1/0015, C09C1/0078 take precedence; dolomitic solids C09C1/009)}
- C09C 1/021: {Calcium carbonates}
- C09C 1/027: {Barium sulfates}
- C09C 1/28: Compounds of silicon {(C09C1/0009, C09C1/0015, C09C1/0078 take precedence)}
- C09C 1/405: {containing combined silica, e.g. mica}
- C09C 1/42: Clays
- C09D 5/027: {Dispersing agents (anti-settling agents C09D7/45)}
- C09D 7/45: Anti-settling agents
- C01P 2004/61: Micrometer sized, i.e. from 1-100 micrometer
- C09D: COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR (cosmetics A61K; processes for applying liquids or other fluent materials to surfaces, in general, B05D; staining wood B27K5/02; glazes or vitreous enamels C03C; natural resins, French polish, drying-oils, driers, turpentine, per se, C09F; polishing compositions other than French polish, ski waxes C09G; adhesives or use of materials as adhesives C09J; materials for sealing or packing joints or covers C09K3/10; materials for stopping leaks C09K3/12; processes for the electrolytic or electrophoretic production of coatings C25D)
- C09B: ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES {, e.g. PIGMENTS}; MORDANTS; LAKES (fermentation or enzyme using processes to synthesise a desired chemical compound C12P)
- C09C: TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES (treatment of materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone C04B14/00, C04B18/00, C04B20/00); PREPARATION OF CARBON BLACK {; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS}
- C01P: INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS

## Abstract

A colorant composition for tinting or coloring surface coverings or paint is. provided that has a low volatile organic compound (VOC) concentration, alkylphenoi ethoxylate surfactants (APE) free and hazardous air pollutants (HAPS) free. Additionally, the colorant composition has performance properties substantially equal to or better than tinters possessing high VOC concentrations. The colorant composition includes a colorant component, a dispersant including a polyamide, a surface active agent, water, and optional additives, The polyamide is a high molecular weight polyamide.having at least two anchoring amines, and the surface active agent includes phosphoric acid, phosphate esters, or salts thereof.

## Claims

### Claim 1

A colorant composition comprising:
a colorant component;
a dispersant comprising a compound of formula (I):
wherein R and R′″ are each independently selected from the group consisting of fatty acid chains comprising at least 16 carbons and at least one unsaturation, and
wherein R′ and R″ are each independently selected from the group consisting of divalent alkane and divalent arene;
a surface active agent comprising a phosphate ester or salt thereof,
wherein the phosphate ester is a monoester of formula (II)
or diester of formula (III)
or combination thereof,
wherein R and R′ of the phosphate ester are each independently selected from the group consisting of isocety, octyl, tridecyl, or 2-phenyl heptyl; and
wherein M is hydrogen, an alkali metal, or ammonium;
water; and
optionally an additive.

### Claim 2 (depends on 1)

A colorant composition of claim 1 comprising:
from about 5 to about 70% by weight of the colorant component;
from about 1 to about 30% by weight of the dispersant;
from about 0.1 to about 30% by weight of the surface active agent;
from about 1 to about 75% by weight water; and
from about 0 to about 30% by weight of the additive.

### Claim 3 (depends on 1)

The colorant composition of claim 1, wherein the colorant composition is non tip drying wherein a dispensing rate after at least 14 days of dispensing one ounce of the colorant composition once a week is within 10% of an initial dispensing rate.

### Claim 4 (depends on 1)

The colorant composition of claim 1, wherein a gloss number measured at a 20° angle is at least 13 for a semi-gloss paint comprising said colorant composition.

### Claim 5 (depends on 1)

The colorant composition of claim 1, wherein the colorant component comprises a pigment and a filler.

### Claim 6 (depends on 5)

The colorant composition of claim 5, wherein the filler has a particle size from about 1 to about 300 microns.

### Claim 7 (depends on 5)

The colorant composition of claim 5, wherein the filler includes one or more of talc, barium sulfate, calcium carbonate, kaolin, attapulgite, magnesium carbonate, and calcined aluminosilicates.

### Claim 8 (depends on 1)

The colorant composition of claim 1, wherein the compound of formula (I) has a molecular weight from 1500 g/mol to 2900 g/mol.

### Claim 9 (depends on 1)

The colorant composition of claim 1, wherein the compound of formula (I) comprises a fatty acid chain having at least 18 carbons.

### Claim 10 (depends on 1)

The colorant composition of claim 1, wherein the surface active agent comprises an alkali metal or ammonium salt of the phosphate ester.

### Claim 11 (depends on 1)

The colorant composition of claim 1, wherein the colorant composition is compatible with solvent-based alkyd surface coatings and water-based latex surface coatings.

### Claim 12 (depends on 1)

The colorant composition of claim 1, wherein the colorant composition is substantially free of alkylphenol ethoxylate (APE) surfactants.

### Claim 13 (depends on 1)

The colorant composition of claim 1, wherein the compound of formula (I) has an amine value of about 45 KOH/g to about 50 KOH/g and an acid value of about 45 KOH/g to about 50 KOH/g.

### Claim 14

A colorant composition comprising:
a colorant component;
a dispersant comprising a compound of formula (I):
wherein R and R′″ are each independently selected from the group consisting of fatty acid chains comprising at least 16 carbons and at least one unsaturation,
wherein R′ and R″ are each independently selected from the group consisting of divalent alkane and divalent arene, and
a surface active agent comprising a phosphate ester or phosphoric acid, or salts thereof;
water; and
an additive selected from the group consisting of polyethylene glycol, lecithin, polyoxyethylene fatty ethers, polyurethane polyols, thickener, rheology modifier, sodium salt of polycarboxylates, defoamers, extender, biocides, and combinations thereof.

### Claim 15 (depends on 14)

The colorant composition of claim 14, wherein the one or more additives includes polyethylene glycol having a molecular weight between about 300 and about 400 g/mol.

### Claim 16

A colorant composition comprising:
a colorant component;
a dispersant comprising a compound of formula (I):
wherein R and R′″ are each independently selected from the group consisting of fatty acid chains comprising at least 16 carbons and at least one unsaturation,
wherein R′ and R″ are each independently selected from the group consisting of divalent alkane and divalent arene, and
a surface active agent comprising a phosphate ester or phosphoric acid, or salts thereof;
water; and
optionally an additive,
wherein the colorant composition comprises a volatile organic compound (VOC) concentration of about 50 g/L or less.

### Claim 17 (depends on 16)

The colorant composition of claim 16, wherein the colorant composition comprises a VOC concentration of from about 0.1 to about 15 g/L.