Compact cleaner containing surfactants

• US 6,331,518 B2
• Filed: 03/24/1999
• Issued: 12/18/2001
• Est. Priority Date: 09/24/1996
• Status: Expired due to Fees

• Current Assignee: Ecolab GmbH & Co. Ohg (Ecolab, Inc.)
• Original Assignee: Ecolab GmbH & Co. Ohg (Ecolab, Inc.)
• Inventors: Hemm, Dieter, Hellmann, Guenter
• Primary Examiner(s): DELCOTTO, GREGORY R
• Application Number:
  US09/147,975
• Publication Number:
  US 20010034317A1
• Time in Patent Office: 1,000 Days
• Field of Search: 510/302, 510/349, 510/350, 510/351, 510/225, 510/367, 510/375, 510/403, 510/445, 510/446, 510/447, 510/451, 510/506, 510/499, 510/531
• US Class Current: 510/445
• CPC Class Codes: C11D 17/0065 Solid detergents containing builders C11D17/06 takes precedence
• CPC Class Codes: C11D 3/044 Hydroxides or bases
• CPC Class Codes: C11D 3/2068 Ethers
• CPC Class Codes: C11D 3/30 Amines; Substituted amines ; Quaternized amines
• CPC Class Codes: C11D 7/06 Hydroxides
• CPC Class Codes: C11D 7/261 Alcohols; Phenols
• CPC Class Codes: C11D 7/263 Ethers
• CPC Class Codes: C11D 7/3218 Alkanolamines or alkanolimines
• CPC Class Codes: C11D 7/3227 Ethers thereof
• CPC Class Codes: C11D 7/3245 Aminoacids

Abstract

A water-containing solid detergent having a delayed, controllable and variable hardening time after addition of all the components produced by providing

a) aqueous 42 to 55% lye, in a quantity of 21 to 70% by weight,

b) mixing with the aqueous lye a compound selected from the group corresponding to formula (I):

HOCH₂CH(R¹)OR²  (I)

in which R¹ is a hydrogen atom or a methyl group and R², independent of R¹, is a hydrogen atom, a C_1-4 alkyl group, a group CH₂CH(R³)0R⁴ or a group CH₂CH(R⁵)OCH₂—CH(R⁶)OR⁷, where R³, R⁵, and R⁶ represent hydrogen atoms or methyl groups and R⁴and R⁷ represent hydrogen atoms or C_1-4 alkyl groups, and compounds corresponding to formula II:

[HOCH₂CH(R⁸)_3−xNH_x  (II)

in which R⁸ is a hydrogen atom or a methyl group and x is the number 0, 1 or 2, in a total quantity of 0.5 to 40% by weight, adding thereto

c) a foam inhibitor, builder component, paraffin oil, or surfactants, or polyhydroxy compounds in the order given, and finally adding thereto

d) 2% to 25% by weight of solid alkali metal hydroxide, all weights being based on the weight of the detergent.

Claims

1. A method for preparing a water-containing solid detergent, the method comprising:

providing aqueous 42 to 55% lye in a quantity of 21 to 70% by weight;

mixing with the aqueous lye compound of formula (I), compound of formula (II), or a combination thereof to achieve a quantity of this compound or combination of 0.5 to 40% by weight and to form a first mixture;

formula (I) being;

2. The method of claim 1, wherein adding surfactant comprises adding anionic, cationic, amphoteric, or nonionic surfactant.

3. The method of claim 1, wherein adding builder comprises adding pentasodium triphosphate, trisodium citrate, nitrilotriacetate, ethylenediamine tetraacetate, soda, alkali metal silicate, or a mixture thereof.

4. The method of claim 1, wherein:

mixing a compound of formula I comprises mixing ethylene glycol, 1,2-propylene glycol, butyl glycol, or butyl diglycol;

mixing a compound of formula II comprises mixing ethanolamine, diethanolamine, or triethanolamine;

or

a combination thereof.

5. The method of claim 1, wherein the solid detergent comprises from 10% to 35% by weight of water, based on the weight of the detergent.

6. The method of claim 1, wherein after the addition of the compound corresponding to formula (I) and/or formula II, the mixture is stirred for at least 3 minutes.

7. The method of claim 1, comprising forming a detergent that hardens about 90 to about 180 minutes after forming.

8. The method of claim 7, comprising forming a detergent that hardens 30 to 90 minutes after forming.