DE1185325B - Detergents and cleaning agents - Google Patents

Description

FEDERAL REPUBLIC OF GERMANY

GERMAN

PATENT OFFICE

EDITORIAL

Boarding school Kl .: ClId

German class: 23e-2

Number: 1185325

File number: U 8235IV a / 23 e

Filing date: August 1, 1961

Opening day: January 14, 1965

The invention relates to detergents and cleaning agents, in particular to those which certain alkanesulfonates with certain anionic, cationic and nonionic surface-active agents Contain substances.

The foaming power of a detergent is important for many reasons and determines to a very considerable extent Degree its manner of use.

The amount of solution contained in the foam and the foam resistance are particularly important when a detergent is to be disposed of outside of a washing vessel, as is the case, for example with a hair shampoo or shaving cream. The usefulness of a shampoo seems primarily to be to depend on whether it can form a foam when stirred in an aqueous solution, which Holds a sufficient amount of detergent solution on the hair so that a thorough wash is possible is effected before the solution drains.

Superior foaming power is also desirable for a special shaving cream. A permanent foam which can hold a large amount of wetting agent in solution around the hair, softens it and allows easier cutting by a razor blade, while a stiff foam the hair standing on the skin and allowing the blade to cut it at right angles to its length, resulting in a clean, smooth shave.

The most commonly used cleaning agents do not form any synergistic foaming mixtures Qo-Cu alkanesulfonates. In experiments gave alkylbenzenesulfonate, Soap, ethylene oxide-propylene oxide adducts, tridecyl alcohol - ethylene oxide - condensate and quaternary ammonium chloride, non-synergistic mixtures with said alkane sulfonates. the in S tü ρ e 1, "Synthetic detergents and cleaning agents", 2nd edition, p. 198, tables 62 and 63, mentioned Mixture of alkyl sulfonate-alkyl phenol polyglycol ether would not be suitable for all purposes; because one of the components is non-ionic, therefore the mixture foams poorly and is not suitable for the production of liquid and spray-dried ones Preparations.

It has now been found that certain long-chain alkanesulfonates synergistically foaming agents with * s certain anionic and cationic surfactants.

The present invention provides a washing and cleaning agent which consists of a synergistic foaming mixture of a C ₁₀ -C ₁₄ alkane sulfonate and one or more of the following surface-active substances: an alkoxyhydroxypropane washing and cleaning agent

Applicant:

Unilever N.V., Rotterdam (Netherlands)

Representative:

Dr.-Ing. A. van der Werth, patent attorney,

Hamburg-Harburg 1, Wilstorfer Str. 32

Named as inventor:

Willard Mead Bright, Ridgewood, N.J.

(V. St. A.)

Claimed priority:

V. St. ν. America of August 2, 1960 (47 043)

sulfonate in which the alkoxy group has 12 to 18 carbon atoms contains, a lauryl sulfate, octylamine.

Synergistic foaming is not caused by all mixtures of a C ₁₀ -C ₁₄ alkane sulfonate and one of the above surface-active substances, but is only obtained if these components are present in the mixture within certain limits. However, it is not possible to set these limits in general because the proportions which result in synergistic foaming depend on the particular combination used. Mixtures of a C ₁₀ -C ₁₄ alkane sulfonate and one of the above surfactants in equal amounts by weight generally show synergistic foaming.

Synergistic foaming is considered to be present if by one means in the following Test generated foam volume is 35 ecm larger than the arithmetic sum of the foam volumes of the individual components of the agent.

test

An amount by weight of the agent to be tested, which preliminary tests have proven to be probably suitable, is dissolved in 1 liter of water with a hardness of 180 parts per million (Ca: Mg = 2: 1). 100 cc of the solution are placed in a 500 cc mixing cylinder which is immersed in a water bath up to the 500 cc mark. The temperature of the water bath is adjusted in order to keep the temperature of the cleaning agent into the cylinder to 5O ⁰ C. When the temperature of the solution reaches 50 ⁰ C (which requires about 20 minutes), the

409 768/375

3 4

Cylinder was taken out of the bath, closed and propane sulfonate was systematically changed,

and shaken by hand, with ten strong double- were measured.

movements take place in 5 seconds. The stopper is The composition of the builder was as follows

then immediately removed and the cylinder in the bath:

brought back. The first reading of the foam is 5 parts by weight

volume takes place 30 seconds after shaking sodium tripolyphosphate 15

takes place, and a second reading is made after the tetrasodium pyrophosphate 25

Unlocked cylinder in the bath for 15 minutes. Sodium silicate 6

has stood. Sodium carboxymethyl cellulose 0.5

The following examples illustrate the invention. io sodium sulfate 35.5

In these examples the percentages and ratios are by weight. The means in which the dodecanesulfonate propane. -ι, sulfonate ratio was between 0.2: 1 and 50: 1, Example 1 demonstrated synergistic foaming.

The foam volumes of a number of means, 15

which 18% of a mixture of sodium decanesulfonate Example 5

and sodium S-dodecyloxy ^ -hydroxypropanesulfonate The foam volumes of a number of agents,

and 82% sodium sulfate builder contained a mixture of sodium dodecanesulfonate

and in which the proportions of alkanesulfonate and propane and octylamine were and in which the proportions of these

sulfonate have been systematically changed, 20 compounds have been systematically changed

measure up. The means in which the alkanesulfonate-propane is measured. The means in which the dodecanesulfonate

sulfonate ratio was between 0.6: 1 and 17: 1, octylamine ratio between 1.1: 1 and 70: 1

showed synergistic foaming. exhibited synergistic foaming.

_{Example2 2g Example6}

The tests described in Example 1 were The tests described in Example 5 were

repeated, with sodium dodecanesulfonate in place repeatedly using triethanolamine

of sodium decanesulfonate was taken. The salt of lauryl sulfate instead of octylamine. the

Agent wherein the dodecanesulfonate propanesulfonate agent wherein the dodecanesulfonate lauryl sulfate

Ratio was between 0.125: 1 and 35: 1, 30 showed ratio was between 0.16: 1 and 3: 1, showed

synergistic foaming. synergistic foaming.

Example3 _n * * _u

Claims (1)

Claim: The tests described in Example 1 were repeatedly using sodium tetradecane cleaning agent, thereby identifying sulfonate instead of sodium decanesulfonate. This shows that there is a synergistic Means in which the tetradecanesulfonate-propanesulfonate mixture consists of approximately equal parts by weight Ratio between 0.6: 1 and 1.1: 1 showed a C ₁₀ -C ₁₄ alkanesulfonate and an or synergistic foaming. several of the following surfactants: . 40 is an alkoxyhydroxypropanesulfonate, wherein the Example 4 alkoxy group contains 12 to 18 carbon atoms, The foam volume contains a number of agents, a lauryl sulfate and octylamine. which contains 18% of a mixture of sodium dodecane sulfonate and sodium S-octadecyloxy ^ -hydroxy- Publications considered: propane sulfonate and 82% of a builder 4.1 S tu ρ el, »Synthetic washing and cleaning held and in which the ratio of alkanesulfonate medium ", 2nd edition, p. 198. 409 768/375 1.65 © Bundesdruckerei Berlin