Solidification matrix comprising a carboxylic acid terpolymer

Patent metadata

Field	Value
Publication number	US-10364409-B2
Application number	US-201615272848-A
Country	US
Kind code	B2
Filing date	Sep 22, 2016
Priority date	Oct 9, 2013
Publication date	Jul 30, 2019
Grant date	Jul 30, 2019

Abstract

Stability enhancement agents for use in a solidification matrices and solid detergent compositions are described. Stability enhancement is provided by a hydratable salt, water and a carboxylic acid terpolymer forming a dimensionally stable solid compositions. Preferred carboxylic acid terpolymers include from about 40 to 90% by weight of a carboxylic acid monomer, anhydride or salt thereof, from about 4 to 40% by weight of a monomer comprising sulfo groups, and from about 4 to 40% by weight of a nonionic monomer set forth in formula (I). The stability enhancement composition for use in solid detergent compositions are preferably biodegradable and may be substantially free of phosphate and/or NTA-free and provide beneficial hard water scale control.

First claim

What is claimed is:

1. A solid detergent composition comprising:
between about 0.1 wt-% and about 20 wt-% of a terpolymer (A), said terpolymer (A) comprising in copolymerized form from about 75% by weight of acrylic acid, of about 20% by weight of 2-acrylamido-2-methylpropanesulfonic acid, and of about 5% by weight of a nonionic monomer of the formula (I)
H 2 C═CH—CH 2 ═O[EO] 17 —H  (I)

in which EO is ethylene oxide units;

between about 0.1 wt-% and about 50 wt-% water;
between about 65 wt-% and about 95 wt-% alkali metal carbonate; and
between about 0.5 wt-% and about 10 wt-% at least two surfactants, wherein the at least two surfactants are a fatty alcohol alkoxylate, and an EO/PO copolymer having terminal hydroxyl groups;
wherein the solid detergent composition is dimensionally stable and has a growth exponent of less than 3% if heated at a temperature of 122° F.

2. The composition of claim 1 , wherein the terpolymer (A) further comprises in copolymerized form up to about 30% by weight of one or more further ethylenically unsaturated monomers.

3. The composition of claim 1 , further comprising at least one functional ingredient selected from the group consisting of: additional surfactants, chelating agents, sequestering agents, inorganic detergents, organic detergents, alkaline sources, builders, water conditioners, rinse aids, hardening agents, bleaching agents, sanitizers, activators, fillers, defoaming agents, anti-redeposition agents, optical brighteners, dyes, odorants, stabilizing agents, dispersants, enzymes, corrosion inhibitors, thickeners and solubility modifiers.

4. A method of forming a solid detergent composition comprising:
combining between about 65 wt-% and about 95 wt-% of an alkali metal carbonate, water, a terpolymer (A), said terpolymer (A) comprising in copolymerized form from about 75% by weight of acrylic acid, of about 20% by weight of 2-acrylamido-2-methylpropanesulfonic acid, and of about 5% by weight of a nonionic monomer of the formula (I)
H 2 C═CH—CH 2 ═O[EO] 17 —H  (I)

in which EO is ethylene oxide units, and at least two surfactants, wherein the at least two surfactants are a fatty alcohol alkoxylate, and an EO/PO copolymer having terminal hydroxyl groups; and

forming a cast, pressed, or extruded solid;
wherein the solid detergent composition is dimensionally stable and has a growth exponent of less than 3% if heated at a temperature of 122° F.

5. The method of claim 4 , wherein the solid detergent composition further comprises least one functional ingredient selected from the group consisting of: additional surfactants, chelating agents, sequestering agents, inorganic detergents, organic detergents, alkaline sources, builders, water conditioners, rinse aids, hardening agents, bleaching agents, sanitizers, activators, fillers, defoaming agents, anti-redeposition agents, optical brighteners, dyes, odorants, stabilizing agents, dispersants, enzymes, corrosion inhibitors, thickeners and solubility modifiers.

6. A method of forming a solid detergent composition that is dimensionally stable and has a growth exponent of less than 3% when heated at a temperature of 122° F., comprising the steps of:
combining an alkali metal carbonate, at least two surfactants, wherein the at least two surfactants are a fatty alcohol alkoxylate, and an EO/PO copolymer having terminal hydroxyl groups; and at least one functional component to form a powder pre-mix; and
mixing the powder pre-mix with a liquid pre-mix, the liquid pre-mix comprising water and a terpolymer (A), said terpolymer (A) comprising in copolymerized form from about 75% by weight of acrylic acid, of about 20% by weight of 2-acrylamido-2-methylpropanesulfonic acid, and of about 5% by weight of a nonionic monomer of the formula (I)
H 2 C═CH—CH 2 ═O[EO] 17 —H  (I)

in which EO is ethylene oxide units, wherein the solid detergent composition comprises between 65 wt-% and about 95 wt-% of the alkali metal carbonate.

7. The method of claim 6 , further including the step of casting, pressing, and/or extruding the mixture obtained from mixing the powder pre-mix with a liquid pre-mix.

8. The method of claim 6 , wherein the functional component is selected from the group consisting of: surfactants, chelating agents, sequestering agents, inorganic detergents, organic detergents, alkaline sources, builders, water conditioners, rinse aids, hardening agents, bleaching agents, sanitizers, activators, fillers, defoaming agents, anti-redeposition agents, optical brighteners, dyes, odorants, stabilizing agents, dispersants, enzymes, corrosion inhibitors, thickeners and solubility modifiers.

Assignees

• Ecolab Usa Inc

Inventors

• Walters Kerrie
• Silvernail Carter M
• Detering Juergen
• Kingma Arend Jouke
• Dailey James S

Classifications

• C11D17/0052

  Cast detergent compositions · CPC title

• C11D3/10

  Carbonates {; Bicarbonates} · CPC title

• C11D3/0036

  Soil deposition preventing compositions; Antiredeposition agents · CPC title

• C11D3/378 Primary

  (Co)polymerised monomers containing sulfur, e.g. sulfonate · CPC title

• C11D17/0047 Primary

  Detergents in the form of bars or tablets · CPC title