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Scale-reducing additive for automatic dishwashing systems

一种自动、洗涤剂的技术，应用在洗涤剂配合剂、洗涤剂组合物、非表面活性洗涤剂组合物等方向，能够解决没有揭示聚合物组合物等问题

Inactive Publication Date: 2011-10-19
ROHM & HAAS CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this reference does not disclose compositions comprising polymers with lactone end groups

Method used

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  • Scale-reducing additive for automatic dishwashing systems
  • Scale-reducing additive for automatic dishwashing systems
  • Scale-reducing additive for automatic dishwashing systems

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0024] polymer testing - The scale-reducing properties of all polymers were determined by mixing these polymers with "Prototype 1F" as described below, in a KENMORE QUIETGUARD dishwashing machine (addition of solids during the main wash cycle), using a hardness of 400ppm (2:1 Ca +2 : Mg +2 ) water for five cycles at 130°F (54.4°C), food-free. Glasses were evaluated after 3 and 5 cycles according to ASTM method 3556-85 (1 = clean, 5 = thick film).

[0025] result - In each experiment, 3.2 g of active trisodium methylglycine diacetate were added together with 28 g of formulation Prototype 1F.

[0026]

[0027] TRILON M is an aqueous solution of trisodium methylglycine diacetate available from BASF Corp.

[0028]

[0029]

[0030] Polymer samples:

[0031] Comparative polymer A (Mw = 2220) = 90% acrylic acid / 10% maleic acid, sodium salt phosphono end groups.

[0032] Comparative Polymer B (Mw=7,201) 100% acrylic polymer containing sulfonate end groups.

[0033...

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Abstract

An automatic dishwashing detergent composition having at least two components. The first component is a polymer containing polymerized residues of at least one C3-C6 carboxylic acid monomer and a lactone end group. The second component is a biodegradable builder selected from among nitrilotriacetic acid, ethylenediaminetetraacetic acid, diethylenetriaminepentaacetic acid, glycine-N,N-diacetic acid, methylglycine-N,N-diacetic acid, 2-hydroxyethyliminodiacetic acid, glutamic acid-N,N-diacetic acid, 3-hydroxy-2,2'-iminodisuccinate, S,S-ethylenediaminedisuccinate aspartic acid-diacetic acid, N,N'-ethylenediamine disuccinic acid, iminodisuccinic acid, aspartic acid, aspartic acid-N,N-diacetate, beta-alaninediacetic acid, polyaspartic acid, salts thereof and combinations thereof.

Description

technical field [0001] The present invention generally relates to formulations capable of minimizing mixed inorganic deposits in non-phosphate or low phosphate automatic dishwashing systems. Background technique [0002] Automatic dishwashing detergents are generally considered to be a class of detergent compositions quite distinct from detergents used in fabric washing or water treatment. Automatic dishwashing detergents are required to achieve an extremely clean, film-free appearance on washed items after the cleaning cycle is complete. Phosphate-free or low-phosphate compositions rely on non-phosphate builders such as citrates, carbonates, silicates, disilicates, bicarbonates, aminocarboxylates, etc., and with Other agents from calcium and magnesium chelation in hard water leave insoluble visible deposits when dry. Polymers prepared from (meth)acrylic acid and maleic acid are known to be useful in inhibiting scale or other insoluble deposits produced by non-phosphate bu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11D3/37C11D3/33
CPCC08F2/38C08F8/16C08F2810/40C11D3/33C11D3/3757C11D3/3776C11D2111/14C08F20/06C08F22/02C11D3/37C11D7/32
Inventor J·曼纳J·E·舒尔曼
Owner ROHM & HAAS CO
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