DE1160983B - Hair conditioners - Google Patents

Description

FEDERAL REPUBLIC OF GERMANY

GERMAN

PATENT OFFICE

EDITORIAL

Boarding school KL: A 61k

German KL: 30 h -13/07

Number: 1160 983

File number: H 43208 IV a / 30 h

Filing date: May 7, 1960

Opening day: January 9, 1964

It is known that copolymers of esters of unsaturated carboxylic acids and N-substituted acrylic acid amides, whose ester groups were saponified after the polymerization, as a hair fixative and coating agent to use for skin areas. Apart from the complex two-stage manufacturing process the films made with these products are not clear in appearance and have poor strength. Furthermore, they are somewhat hygroscopic and therefore soften in a humid atmosphere. It is also be ίο knows how to use film-forming copolymers as hair styling aids, the nitrogen-containing basic, have groups capable of salt formation. Such products are due to these groups also susceptible to moisture.

It has now been found, surprisingly, that nitrogen produced by methods known per se containing copolymers of unsubstituted acrylamide and N-substituted acrylamides, which do not carry groups capable of forming salts, are suitable as hair setting agents and those mentioned Do not have disadvantages. They show good film-forming properties, especially when the acrylic residue of the N-alkyl acrylamide contains 2 to 6 carbon atoms. The following are, for example, possible substituents: n-propyl, i-propyl, n-butyl, i-butyl, tert-butyl, n-pentyl, i-pentyl, neo-pentyl, 2-ethyl, 1-methyl and 1-propyl, and others. m. The copolymers to be used according to the invention can also contain several of the N-substituted ones mentioned Acrylamides contain.

The quantitative ratio of unsubstituted to substituted acrylamide in the copolymers depends on the constitution of the substituted acrylamide. Simple experiments make it without it Difficulties are possible in finding a product with the desired solubility and other properties to manufacture. Copolymers made from acrylamide have particularly favorable film-forming properties and N-tert-butyl acrylamide, e.g. B. those where the ratio of unsubstituted to substituted acrylamide is 1: 1 to 3: 7.

The copolymers mentioned are suitable as film-forming substances in the production of sprayable substances Hair fixatives. They form clear, almost colorless films of good cohesion, which do not have any "crystalline" appearing parts and therefore do not appear scaly. The educated Film is not hygroscopic and hardly softens even in a humid atmosphere.

In spite of this, the films produced from the copolymers mentioned show an adequate one Hair setting agents

Applicant:

Henkel & Cie. GmbH.,

Düsseldorf-Holthausen, Henkelstr. 67

Named as inventor:

Dr. Hans Zoebelein, Düsseldorf-Eller,

Dr. Manfred Dohr, Düsseldorf

Solubility in water or with higher proportions of substituted acrylamides, such as tert-butyl acrylamide, good emulsifiability in water, so that the coatings can easily be removed again.

Another advantage of the hair setting agent according to the invention is the miscibility of their solutions in lower aliphatic alcohols with halogenated hydrocarbons, e.g. B. methylene chloride, and lower Chlorofluorocarbons. The mentioned property makes the use of the solutions in Aerosol spray cans possible. When making the alcoholic solutions for this purpose is too Note that usually small amounts of water have to be added in order to achieve a homogeneous solution of the copolymer in ethyl alcohol or isopropyl alcohol. But only so much water should be added be that just a good solubility is achieved, so not when adding the Propellant for the spray can a water separation takes place. With higher proportions of substituted Acrylamide, ζ. B. N-tert-butyl acrylamide, the addition of water can also be omitted.

When using the copolymers as film-forming substances for the production of hair setting agents Other additives known for this purpose can be added, such as perfume and small amounts of surfactants. The addition of hydrophobic substances is in not required in most cases.

example 1

A solution of 15 g of acrylamide and 0.09 g of sodium pyrosulfite in 220 ecm of water and a solution of 30 g of N-tert-butyl acrylamide in 165 ecm of acetone were combined and added 0.09 g of ammonium persulfate polymerized in 20 ecm of water within 3 hours at 40 ° C. After finished

309 778/344

In the reaction, a pale powder with a K value of 84 was obtained by drum drying; 16 g des The dry product was suspended in 170 ecm of isopropanol with stirring and 14 ecm of water given. A homogeneous, highly viscous solution resulted after a short time.

4 g of this solution together with 35.5 g of alcohol with the addition of 0.5 g of perfume containing 60 g Dichlorodifluoromethane filled into an aerosol spray can. When sprayed, the solution provided a water-soluble, clear film of excellent cohesion. Even in a humid atmosphere this film is not unsightly and sticky. On the other hand, it could easily be removed with water. Because of these properties, the solution produced can be used as a sprayable hair setting agent use.

Example 2

A solution of 18 g of acrylamide and 0.05 g of sodium pyrosulfite in 120 ecm of water was heated to 40 ° C and saturated with nitrogen Solution of 72 g of N-tert-butyl acrylamide in 680 ecm Acetone combined. After heating to 40 ° C, the polymerization was stopped by adding 0.09 g Ammonium persulfate introduced into 10 ecm of water. The temperature rose to 44 ° C after a short time at. The reaction vessel and the polymer were left to stand overnight in a water bath at 40.degree then precipitated by pouring the solution into a large amount of water. There were after the drying 81 g, corresponding to 90% of theory, of a white product obtained, which a Had a K value of 94.

The reaction product was soluble in isopropanol without any addition of water. The solution went with Mix halogenated hydrocarbons. A 0.8% strength isopropanol solution was made with the addition of dichlorodifluoromethane filled into an aerosol spray can. A clear, water-insoluble one formed on spraying Film which, however, dissolves quickly and completely in dilute solutions of conventional detergents was. On the basis of these properties, the mixture described could advantageously be used as a hair fixative use.

Example 3

To produce a liquid hairnet, 1 g of the copolymer is dissolved from 66 parts of tert-butyl acrylamide and 33 parts of acrylamide (K value 70) in 50 g of isopropanol and 40 g of water, perfumed by adding 0.5 parts of perfume oil, and make up to 100 g with water. The solution thus obtained is suitable as a fixing agent for hairstyles. The hair treated with this solution is characterized by shine and good elasticity.

Claims (2)

Patent claims: 1. Hair setting agent based on polymeric, nitrogen-containing compounds, characterized by a content of mixed poly- merisates of acrylamide and N-substituted acrylamides, preferably dissolved in lower aliphatic Alcohols. 2. Hair setting agent according to claim 1, characterized by a content of copolymers of acrylamide and N-butyl acrylamide, in particular N-tert-butyl acrylamide. Considered publications:
German Auslegeschrift No. 1068 013;
Austrian Patent No. 209 502; interpreted documents of French patent No. 1225 972.