Detergent composition

• US 4,686,062 A
• Filed: 02/20/1986
• Issued: 08/11/1987
• Est. Priority Date: 02/23/1985
• Status: Expired due to Term

• Current Assignee: The Procter & Gamble Company
• Original Assignee: The Procter & Gamble Company
• Inventors: Bragg, Charles D., Kermode, Nigel J.
• Primary Examiner(s): BARR, JOSEPHINE
• Application Number:
  US06/831,380
• Time in Patent Office: 537 Days
• Field of Search: 252/174.24, 252/174.25, 252/DIG. 2, 252/99, 252/186.25, 252/186.22, 252/186.23, 252/186.1, 252/186.26-186.29, 252/135
• US Class Current: 510/315
• CPC Class Codes: C11D 3/128 Aluminium silicates, e.g. zeolites C11D3/1253 takes precedence
• CPC Class Codes: C11D 3/2075 Carboxylic acids-salts thereof
• CPC Class Codes: C11D 3/3761 in solid compositions

Abstract

A granular detergent having a phosphorus content of less than 5% comprising:

(a) about 5% to about 50% by weight of a water-insoluble aluminosilicate ion-exchange material and

(b) about 0.1% to about 20% of a polycarboxylate polymer comprising:

(i) about 5% to 70% of a C₃ -C₁₀ monoolefinic monocarboxylic acid,

(ii) about 5% to 70% of a C₄ -C₆ monoolefinic dicarboxylic acid, and

(iii) about 1% to 80% of a nonionic spacer selected from esters of (i) and (ii), C_2-6 monoolefinic alcohols, and esters of C_2-6 monoolefinic alcohols.

The compositions display excellent bleach stability, fabric care and detergency performance at low or zero phosphate levels.

Claims

1. A granular detergent composition having a phosphorus content of less than 5% comprising:

(a) from about 5% to about 50% by weight of a water-insoluble aluminosilicate cation exchange material, and

(b) from about 0.1% to about 20% by weight of a polycarboxylate polymer comprising on a monomer weight basis

(i) from about 5% to about 70% of a C₃ -C₁₀ monoolefinic monocarboxylic acid,

(ii) from about 5% to about 70% of a C₄ -C₆ monoolefinic dicarboxylic acid, and

(iii) from about 1% to about 80% of nonionic spacer which is an ester selected from C₁ -C₆ alkyl and hydroxyalkyl esters of C₃ -C₁₀ monoolefinic monocarboxylic acids, C₄ -C₆ monoolefinic dicarboxylic acids and C₂ -C₆ monoolefinic alcohols, or an alcohol selected from C₂ -C₆ monoolefinic alcohols.

2. A composition according to claim 1 wherein the polymer comprises on a monomer weight basis

(i) from about 10% to about 45% of monoolefinic monocarboxylic acid,

(ii) from about 10% to about 45% of monoolefinic dicarboxylic acid, and

(iii) from about 10% to about 50% of nonionic spacer selected from C₁ -C₆ alkyl and hydroxyalkyl esters of C₃ -C₁₀ monoolefinic monocarboxylic acids and C₄ -C₆ monoolefinic dicarboxylic acids.

3. A composition according to claim 1 wherein the polymer comprises on a monomer weight basis

(i) from about 20% to about 40% of monoolefinic monocarboxylic acid,

(ii) from about 20% to about 40% of monoolefinic dicarboxylic acid, and

(iii) from about 20% to about 45% of nonionic spacer selected from C₁ -C₆ alkyl and hydroxyalkyl esters of C₃ -C₁₀ monoolefinic monocarboxylic acids and C₄ -C₆ monoolefinic dicarboxylic acids.

4. A composition according to claim 2 wherein the nonionic spacer is selected from C₂ -C₆ hydroxyalkyl esters of C₃ -C₁₀ monoolefinic monocarboxylic acids and C₄ -C₆ monoolefinic dicarboxylic acids.

5. A composition according to claim 4 wherein the monocarboxylic acid is selected from acrylic acid, methacrylic acid and mixtures thereof, the dicarboxylic acid is selected from maleic acid, itaconic acid and mixtures thereof and the nonionic spacer is selected from hydroxypropyl(meth)acrylate, hydroxyethyl(meth)acrylate and butanediolmono(meth)acrylate.

6. A composition according to claim 1 wherein the polymer comprises on a monomer weight basis:

(i) from about 20% to about 60% of monoolefinic monocarboxylic acid,

(ii) from about 20% to about 60% of monoolefinic dicarboxylic acid, and

(iii) from about 1% to about 40% of nonionic spacer selected from C₂ -C₆ monoolefinic alcohols and C₁ -C₆ alkyl and hydroxyalkyl esters thereof.

7. A composition according to claim 1 wherein the polymer comprises on a monomer weight basis:

(i) from about 30% to about 50% of monoolefinic monocarboxylic acid,

(ii) from about 30% to about 50% of monoolefinic dicarboxylic acid, and

(iii) from about 2% to about 25% of nonionic spacer selected from C₂ -C₆ monoolefinic alcohols and C₁ -C₆ alkyl and hydroxyalkyl esters thereof.

8. A composition according to claim 6 wherein the monocarboxylic acid is selected from acrylic acid, methacrylic acid and mixtures thereof, the dicarboxylic acid is selected from maleic acid, itaconic acid and mixtures thereof and the nonionic spacer is vinyl acetate or vinyl alcohol.

9. A composition according to any of claim 5 comprising from about 6% to about 25% by weight of the water-insoluble aluminosilicate ion exchange material and from about 0.5% to 10% of the polycarboxylate polymer.

10. A composition according to any of claim 8 comprising from about 6% to about 25% by weight of the water-insoluble aluminosilicate ion exchange material and from about 0.5% to 10% of the polycarboxylate polymer.

11. A composition according to any of claim 1 comprising from about 2% to about 18% of a phosphate builder, from about 1% to about 10% of an alkali metal silicate, from about 5% to about 35% of inorganic or organic peroxy bleaching agent, from 0% to 10% of organic peroxyacid bleach precursor, and a heavy metal scavenging agent.

12. A composition according to claim 11 comprising from about 8% to about 14% of the phosphate builder and from about 0.5% to about 5% of organic peroxyacid bleach precursor.

13. A composition according to claim 12 additionally comprising from 0.1% to 5% of a homo or bi-polycarboxylate polymer comprising on a monomer weight basis from about 25% to 100% of a C₃ -C₁₀ monoolefinic monocarboxylic acid and/or a C₄ -C₆ monoolefinic dicarboxylic acid.