FR2614898A1 - BIODEGRADABLE LIQUID DETERGENT COMPOSITIONS - Google Patents

Abstract

THE SUBJECT OF THE PRESENT INVENTION CONCERNS BIODEGRADABLE LIQUID DETERGENT COMPOSITIONS WHICH CONTAIN A POLYOXYETHYLENEGLYCOLIC ETHER OF A FATTY ALCOHOL, AN ALCANOLAMINE, A SEQUESTRANT AGENT AND A POLYOXYETHYLENEPOLYPROPYLENEGLYCOLY ETHER.

Description

The purpose of this ivention is to

  biodegradable liquid detergent solutions.

  Detergent compositions comprising mixtures of nonionic surfactants,

  alkanolamines and complexing agents (se-

  questrants) are known and often contain polyoxyalkylene ethers as nonionic surfactants. These compositions have excellent detergent properties without excessive formation of

  foam, but have the disadvantage of being weak-

biodegradable.

  The invention relates to a composition

  biodegradable tergente consisting of an aqueous solution comprising

  (A) 2 - 35% by weight of a polyoxyethylene glycerol

  colic of a C8-C22 fatty alcohol having 5 to 25 ethyleneoxy units, or of a mixture of such ethers, (B) 5 - 35% by weight of an alkanolamine (C) 0.5 - 3S% weight of sequestering agent and (D) 0.5 - 5% by weight of non-surfactant

  ionic forming little foam and bio-

  degradable of formula I RO- (CH2CH20) r- (CH2-CHO-f- HI R1 in which R signifies a C8-C22 alkyl group, R1 signifies a methyl or ethyl group, preferably a methyl group, x signifies a number from 1 to 12, and y means a number from 1 to 5, the ratio x: y being

between 3: 1 and 1: 3.

  The detergent composition of the invention may also contain one or more of the following components (E) - (J) (E) up to 5% of a C6-C12 alkyl sulfosuccinate (F) up to 20% dodecylbenzenesulfonic acid,

  olefin sulfonic acid or a lauryl ether

  sulfate (G) up to 10% of a C2-C4 alkyl ester of a sulfated, at least partially unsaturated C16-C18 carboxylic acid, (H) up to 10% of a higher Ce- alcohol C14 or a mixture of such alcohols (I) up to 2% of a water-soluble silicone oil (J) up to 5% of a hydrotropic agent as well as small amounts of the components (K ) - (N) following (K) a lower C1-C4 alcohol or a mixture of such alcohols (L) a C2-C6 glycol (M) a soap, in particular a soft soap (N) an organic solvent insoluble in water and

  (O) up to 25% of another dispersing agent.

  All the percentages indicated above are by weight relative to the total weight of the composition, that is to say including water. The total amount of active ingredients (A) - (N) is preferably between 15 and 30% by weight of the total weight of

the composition.

  The polyoxyethylene glycol ethers which are taken into account as component (A) are above all the polyoxyethylene glycol ethers of C8-Ce18, preferably C12-Cl6 fatty alcohols, preferably containing an average of 5 to 12 units.

  ethyleneoxy, more preferably from 6 to 10. The compound

  sant (A) preferably consists of a mixture of

such ethers.

  Component (B) is preferably mono-,

  di- or triethanolamine, in particular the latter two

or their mixtures.

  The sequestering agents (C) are preferably

  ment nitrilocarboxylic acids, in particular

  nitrilotriacetic acid; polycarbo acids

  xylics, especially citric acid; polyacrylic acids and their salts, in particular their salts

  sodium; and glucona-tes and heptonates, in particular

  especially the sodium salts. The amount of component (C) to be used will depend on the hardness and the content of

heavy metal ions of water.

  Component (D) is preferably a laurylpolyglycolic ether containing on average 5 units

  ethyleneoxy and 4 propyleneoxy units.

  The other components (E) to (N) can represent up to 20% by weight of the composition (y

including water).

  Component (E) is preferably the isooctyl ester (that is to say 2ethylhexylic) of sulfosuccinic acid. Component (F) is preferably dodecylbenzene sulfonic acid or a laurylethersulfate. Component (G) is preferably an ester of sulfated oleic acid. Component (H) is preferably a commercial tetramethylnonanol and component (I) is any commercial water-soluble silicone oil. Components (H) and (I) are preferably used when it is desired to reduce foaming as much as possible. Component (J) is preferably

cumene sulfonate.

  When component (N) is present, it

  preferably white spirit or hydro-

  chlorinated carbide. When the presence of an additional 4- detergent (O) is necessary (in particular for use in ultrasonic washing), the preferred substance is a salt, in particular the sodium salt, of dinaphthylmethanedisulfonic acid, which can be used in amounts not exceeding 25% by weight. The preferred amounts of the components A-J calculated as a function of the percentages by weight of the active materials (without water) are the following: Preferred Particularly preferred

A 15 - 70% 15 - 30%

B 15 - 60% 20 - 35%

C 0.5 - 30% 3 - 25%

D 0.1 - 10% 2 - 5%

E 0 - 25% 3 - 10%

F 0 - 35% 0 - 10%

G 0 - 35% 0 - 10%

H 0 - 15% 0 - 10%

I 0 - 5% 0 - 2%

D 0 - 10% 2 - 6%

  The compositions of the invention can be

  prepared by simple mixing, adding the ingredients

  health with demineralized water and stirring until

  that the product is homogeneous. The pH value of the pro-

  duit is preferably between 11 and 12.5, more preferably between 11.5 and 12.5, and, if necessary,

  can be adjusted to this value by adding alkali.

  The detergent compositions of the invention are particularly useful for washing heavily soiled textiles in industrial and hospital laundries, in washing or ultrasonic cleaning processes or generally for washing or cleaning objects, heavily soiled appliances or equipment.

261469.8

  The detergent compositions of the invention

  have a strong detergent power. They can be used

  for example for cleaning and degreasing metals, plastics, plastics, glass and ceramics, in all branches

  industry, including food sectors

  tation (including for animals), pharmacy, automotive, photography and nuclear power, e.g. machinery, parts for

  machinery, boilers, tanks, auto-

  claves, dies, instruments, tools, filter presses and filter fabrics. They can

  be used to remove mineral oil deposits

  rale, grease, graphite, blood, albumin, starch derivatives, dust, carbon, dyes etc. They can also be used for cleaning surfaces, for example table tops, hospital floors and walls,

  fumigation rooms, slaughterhouses and mouths

  ries, and streets and tunnels. When used for cleaning steel, iron and stainless steel, the detergent compositions of the invention

  have a particular additional anticorrosive effect

particularly advantageous.

  The detergent compositions of the invention

  are also indicated as detergents (pre-

  washing, main washing and / or post-washing) of dyed or undyed natural or regenerated cellulose fibers, for example cotton, linen, cut fiber viscose and mixtures of polyester and cellulose fibers; they can be used for domestic or industrial washing, for example for washing hospital linen, work clothes, aprons and overalls. They can be used in usual industrial washing equipment, for example in discontinuous washing machines of the wringer type and continuous machines of the washing machine type.

washing tunnels.

  The detergent compositions of the invention can also be used for cleaning with

  ultrasound. Mechanical parts such as rollers

  ball bearings, gear wheels, watches, valves, nozzles, jewelry, crystals, quarz,

  medical instruments, laboratory equipment

  glass rake and electronic circuits can be cleaned with detergent compositions in the presence of an ultrasonic generator. Detergent compositions additionally containing an already specified dispersing agent are particularly indicated for the

ultrasonic cleaning.

  For the cleaning of contaminated objects in a washing bath, the aqueous detergent compositions of the invention (containing 15-30% of active materials) are suitably used at a concentration of between 1 and 10% by weight in the water, depending on the nature of the soil to be removed. For cleaning by spraying or by mechanical action, the aqueous detergent compositions of the invention are preferably used at a concentration of between 5 and 30% by weight in water. As additives for blasting with sand or steam, they can be used in undiluted form or at a concentration of between 5 and 10% by weight in water. As detergents, the compositions of the invention are used in an amount depending on the degree of soiling and the nature of the dirt to be removed; preferably, the aqueous detergent compositions of the invention are used at a concentration of between 1 and 5% by weight (of the composition containing from 15 to 30% of

active ingredients).

  The following examples illustrate the present invention without in any way limiting its scope. In these examples, the parts and percentages are by weight and the temperatures are given in degrees Celsius.

Example i

  To 60 parts of demineralized water in an open container, 4 parts of cumene sulfonate are added at room temperature (in the form of a solution

  40% aqueous) and 1 part docecylbenzene acid-

  sulfonic and the mixture is stirred until it becomes clear. The following components are then added in the indicated order, with continuous stirring, pending the complete dissolution of a component to add the following: 12 parts of triethanolamine

  parts of a 40% aqueous nitrilo- solution

  sodium triacetate 12 parts of the reaction product of 7 moles of ethylene oxide on 1 mole of a mixture of C12-Cl5 alcohols (available under the brand Sandoxylate A 25-7 from Sandoz SA, Basel, Switzerland) 1 part of polyglycolic ether of lauric alcohol containing 5 ethyleneoxy units and 4 propyleneoxy units (available under

  Sandoxylate LFW brand from Sandoz S.A.).

  After stirring for 10 to 60 minutes (depending on the volume of the batch), a composition is obtained containing the following components: Component A 12% by weight B 12% by weight C 4% by weight D 1% by weight F 1% by weight J 1.6% by weight Water 68.4% by weight, which can be used as it is in Examples 2 and 3 below.

Example 2

  In a solution containing from 3 to 5% by weight of the composition of Example 1 depending on the degree of soiling, a laboratory container made of glass soiled with blood, cerebral matter and dry albumin is immersed. After immersion for 2 to 3 hours at 80 or for 12 hours at temperature

  room, the glass container is ready to be

  used after washing with clean water.

Example 3

  Glass containers, metal parts and plastic equipment soiled with oil or grease can be cleaned by immersion in a solution containing 1 to 5% in

  weight of the composition of Example 1.

Examples 4-8

  The mixtures below are prepared by

  proceeding as described in Example 1.

BOARD

  Components Parts by weight (total 100.00) Ex 4 5 6 7 8 (A) Sandoxylate 25-7 9.0 10.0 11.0 12.0 14.0

  (B) Triethanolamine 12.0 12.0 - - -

  (B) Diethanolamine - - 12.0 12.0 10.0 (C) Na nitrilotriacetate (40% aqueous solution) 10.0 10.0 10.0 10.0 10.0

(C) Citric acid - - - 0.3 -

  (D) Sandoxylate LFW 3.0 2.5 2.0 1.5 1.0

(F) Dodecyl acid - -

  benzenesulfonic 1.0 0.5 1; 0 - 1.5 (J) Cumene sulfonate <aqueous solution

at 40%) 2.0 3.0 3.0 3.0 5.0

  Demineralized water 63.0 62.0 61.0 61.2 58.5

Example 9

  According to a continuous washing process (washing tunnel, 18 sections), hospital linen (white linen) is treated as follows: Sections 1-5: prewash at 20-50. In section 1, 6 1 of a solution obtained by adding 12 parts of the composition of Example 6 to 1000 parts of water, and g of a commercial pre-washing powder removing the dirt are added. In the

section 5, add an additional 3 l

  diluted composition of

example. 6.

Sections 6-10: Wash at 80-95.

Sections 11-15: Rinse at 80-60.

  Section 16: Hypochlorite bleaching at 20-30 (the bleach bath contains 0.85 g

NaClO / liter of fresh water).

  Section 17: Treatment with peroxides at 200 (0.1 g / l H202 at 25%) and neutralization with

acetic acid.

Section 18: Rinsing at 15-18.

Example 10

  Proceeding as described in Example 9, but with the following changes, highly stained polyester / cotton work overalls are washed: The detergent solution used contains 30 g / l of the composition of Example 4, and added 40 g of pre-wash powder. Washing is carried out at a temperature between 80 and 85, and a further 4 l of detergent solution diluted in the

section 10.

  Clothes are clean and free of

oil stains.

Example 11

  42.5 parts of the composition of Example 4 are mixed with 2.5 parts of soft soap, 5 parts of hexylene glycol and 50 parts of sodium salt of dinaphthylmethanedisulfonic acid (aqueous solution

at 50%).

Example 12

  Electronic micro-circuits are cleaned by immersion in a 1% solution of the product of Example 11 and an ultrasound treatment is carried out

at 25 kHz for 90 seconds.

11 '

Example 13

  Polishing paste is completely removed from watch cases by ultrasonic treatment

  in a 4% solution of the product of Example 11.

2 6 14 898

Claims (15)

  1. A biodegradable detergent composition,   characterized in that it consists of a solution aqueous tion including   (A) 2 - 35% by weight of a polyoxyethylene glycerol   colic of a C8-C22 fatty alcohol having 5 to 25 ethyleneoxy units, or of a mixture of such ethers, (B) 5 - 35% by weight of an alkanolamine (C) 0.5 - 35% by weight of sequestering agent and (D) 0.5 - 5% by weight of non-surfactant   ionic forming little foam and bio- degradable of formula I R- 0 (CH2CH20) X (CH2 _ I   R1 in which R signifies a Cs-C22 alkyl group, R1 signifies a methyl or ethyl group, x signifies a number from 1 to 12, and y signifies a number from 1 to 5, the ratio x: y being between 3: 1 and 1: 3.   2. A detergent composition according to claim 1, characterized in that it also contains one or more of the following components (E) - (O): (E) up to 5% of a C6 alkyl sulfosuccinate -C12 (F) up to 20% dodecylbenzene sulfonic acid,   olefin sulfonic acid or a lauryl ether   sulfate (G) up to 10% of a C2-C4 alkyl ester of a sulfated, at least partially unsaturated C16-C18 carboxylic acid, (H) up to 10% of a higher Cs- alcohol C14 or a mixture of such alcohols (I) up to 2% of a water-soluble silicone oil (J) up to 5% of a hydrotropic agent as well as small amounts of the components (K ) - (N) following (K) a lower C1-C4 alcohol or a mixture of such alcohols (L) a C2-C6 glycol (M) a soap, in particular a soft soap (N) an organic solvent insoluble in water and   (0) up to 25% of another dispersing agent.   3. A detergent composition according to claim 1 or 2, characterized in that the total amount of active materials (A) - (N) is between 15 and 30% by weight of the total composition. 4. A detergent composition according to one   any one of claims 1 to 3, characterized in that   that component (A) is a mixture of polyoxy-   ethylene glycols of fatty alcohols in Cl2-Cl6,   containing on average 6 to 10 ethyleneoxy units.   5. A detergent composition according to one   any one of claims 1 to 4, characterized in that   that component (C) is nitrilotriacetic acid.   6. A detergent composition according to one   any of claims 1 to 5, characterized in that   that component (D) is a laurylpolyglycolic ether containing on average 5 ethyleneoxy units and 4 propyleneoxy units. 7. A detergent composition according to one   any one of claims 1 to 6, characterized in.   that component (F) is dodecylbenzene sulfo acid   fuck. 8. A detergent composition according to one   any one of claims 1 to 7, characterized in that   that component (J) is cumene sulfonate.   9. A detergent composition according to one   any one of claims 1 to 8, characterized in that   that the quantities of components (A) - (J) calculated as a function of the percentages by weight of the active ingredients (without water) are as follows: At 15 -. 70% B 15 - 60% C 0.5 - 30% D 0.1 - 10% E 0 - 25% F 0 - 35% G 0 -35% H 0 - 15% I 0 - 5% D 0 -10%   10. A detergent composition according to claim 9, characterized in that the quantities of components (A) - (J) calculated as a function of the percentages by weight of the active materials (without water), are the following: A 15 - 30% B 20 - 35% C 3 - 25% D 2- 5% E 3 - 10% F 0 -10% G 0 - 10% H 0 - 10% I 0 -2% D 2 - 6%   11. Use of detergent compositions   according to any one of claims 1 to 10, for   industrial or domestic washing of textile materials and for cleaning objects, devices or equipment. 12. A process for the industrial or domestic washing of textile materials, characterized in that one adds to the washing bath from-i to 5% by weight of a   composition according to any one of claims 1   to 10. 13. A composition according to any one   of claims i to 10, characterized in that it   additionally contains up to 25% dinaphthylmethane acid-   disulfonic. 14. Use of the detergent composition according to claim 13, for ultrasonic cleaning. 15. A method for ultrasonic cleaning, characterized in that it comprises immersion   objects in an aqueous bath containing a composition   diluted sition according to claim 13-and the appli- cation of ultrasound.