DE939649C - Detergents and cleaning agents - Google Patents

Description

FEDERAL REPUBLIC OF GERMANY

ISSUED MARCH 1, 1956

GERMAN PATENT OFFICE

PATENT LETTERING

JVr. 939 649 CLASS 23e GROUP 2

B 23954 IVa / 23 e

Dr. Alfred Kirstahler, Düsseldorf, and Dr. Rudi Ratz, Düsseldorf-Holthausen

have been named as inventors

Böhme Fettchemie G. m. B. H., Düsseldorf

Detergents and cleaning agents

Patented in the territory of the Federal Republic of Germany on January 25, 1963

Patent application published September 9, 1954

Patent granted on February 2, 1Θ56

It has been found that the water-soluble salts of sulfuric acid esters are insoluble in water or in Water dispersible alkylbenzene-N-oxyalkylsulfamides the general formula

R- <N-SO ₂ -NH-R '. OH,

in which R is a higher molecular weight alkyl radical of ίο expediently at least 6 carbon atoms and R 'is a hydrocarbon radical with at least 2 carbon atoms, which also has several hydroxyl groups may contain and optionally be interrupted by oxygen atoms, means valuable Have washing and cleaning properties.

These products are obtained by using the underlying alkylbenzene-N-oxyalkylsulfamides sulfated in the usual way, for example using chlorosulfonic acid. The neutralization takes place in a known manner with inorganic or organic bases.

The alkylbenzene-N-oxyalkyl-sulfamides are by methods known per se, for example by condensation of alkylbenzenesulfochlorides with corresponding monoalkanolamines or by condensation of alkylarylsulfamides z. B.

in the form of their sodium compounds, with halohydrins obtain. The sulfuric acid esters, which are formed in this way, have, for. B. below Composition:

Alkyl -.

- SO ₂ - NH • CH ₂ • CH ₂ OSO ₃ H ■

- SO ₂ . NH -CH ₂ • CH • CH ₂ OSO ₃ H

OH

- SO ₂ • NH • CH ₂ • CH ₂ O- CH ₂ • CH ₂ OSO ₃ H

etc.

The alkyl radicals should expediently have a relatively high molecular weight, ie contain at least 6 carbon atoms, particularly favorable results _{being obtained with chain lengths of C 12} to C _16. The oxyalkyl radicals that carry the sulfuric acid ester radicals can be relatively short-chain with a maximum of about 6 carbon atoms, and these radicals can also be interrupted by oxygen atoms.

The detergents and cleaning agents are used in the usual way, i. h., you can use them in the form of solutions, pastes or else in the form of flakes, flakes, pieces and the like. They are with the usual detergent additives, for example inorganic salts, ■ like phosphates, silicates, soda, furthermore caustic alkalis, compatible. You can continue to use them at incorporate the usual fillers and extenders into the deformation .., Sie.sind also together with known anion-active or non-ionic agents applicable or with cation-active Medium, provided that one of the components is present in excess.

The alkylbenzene-N-oxyalkylsulfamide sulfates according to the invention are easily soluble and show good wetting, dispersing ^ foam- and cleaning properties.

example 1

42.5 g (0.1 mol) of the alkylbenzene-N - /? - oxyäthylsulfamids (alkyl radicals on average C ₁₂ )

dissolved in a little ether and, while stirring, dropwise with 12.82 g of chlorosulfonic acid over a period of 30 minutes (0.1 mole "+ 10% excess) added. After stirring for about two hours, the mixture is neutralized with concentrated sodium hydroxide solution. It will a brownish paste, which is clearly soluble in water, is obtained. The aqueous solution foams vigorously and has excellent detergency.

Example 2

45.5 g of alkylbenzene-N- / ?, y-dioxyproopy 1-sulf amide (0.1 mol) are dissolved in 50 cm ^{3 of} ether and mixed with g of chlorosulfonic acid (0.1 mol + ro% excess) at + 5 to +7 ⁰ C sulfated. After stirring for one hour at -f io ° C and expelling the ether by means of a stream of air, it is carefully neutralized with sodium hydroxide solution. A light brown paste is obtained which is highly foaming soluble in water.

Claims (1)

PATENT CLAIM: Washing and cleaning agents containing water-soluble salts of sulfuric acid esters water-insoluble or water-dispersible alkylbenzene-N-oxyalkyl-sulfamides of the general formula > —SO ₂ -NH-R '-OH, in which R is a relatively high molecular weight alkyl radical of advantageously at least 6 carbon atoms and R 'is an aliphatic hydrocarbon radical of at least 2 carbon atoms, which also contain further hydroxyl groups and optionally by oxygen atoms may be interrupted, means, optionally in conjunction with other known surfactants and detergent additives. Referred publications:
French Patent No. 785,475;
U.S. Patent No. 2225960. © 509 661 2.