Cationic polymers as antistatic additives for hair preparations

#1. Field of the Invention

#This invention relates to cosmetic hair-treatment preparations containing an antistatic additive imparting an antistatic effect to the hair.

#After washing with shampoos, shower and bath preparations based on synthetic tensides, but above all after cosmetic treatments, such as dyeing and shaping, hair is often in a cosmetically unsatisfactory state. It is difficult to comb when wet and has little hold and body after drying. Above all, it tends to become statically charged which causes freshly washed hair to "fly".

#In a glass apparatus consisting of a 4-liter three-necked flask, stirrer and intensive condenser, 540 g of a polybutadiene of which the viscosity at 20.degree. C. according to DIN 53015 amounted to approximately 3 poises and the iodine number (according to Wijs) amounted to approximately 450 g/100 g and which predominantly contained 1,4-cis-double bonds (Polyol huls 130, a product of Chem. Werke Huls A. G., Germany were dissolved in 2000 ml of chloroform. 190 g of 40% peracetic acid (in glacial acetic acid) containing 19 g of dissolved sodium acetate were added dropwise over a period of 7.5 hours with vigorous stirring to the solution previously heated to 50.degree. C. in such a way as to produce a steady, gentle reflux of the chloroform boiling under the effect of the heat of reaction. Thereafter, the reaction mixture was stirred for another 2 hours at 50.degree. C. and then cooled to 30.degree. C. The epoxide was precipitated by pouring the reaction mixture into 12,000 ml of methanol under continuous stirring. The viscous oil, precipitating to the bottom of the container, was separated off, mixed three times with 5 liters of methanol and separated and then washed until neutral. The oily reaction product was freed from volatile constituents in vacuo. The yield amounted to 95% of the theoretical. The product contained 2.5% by weight of epoxide oxygen.

#Starting with 540 g of polybutadiene, epoxidation was carried out in the same way as in Example 1 using the quantities of peracetic acid (40% in glacial acetic acid) shown in Table 1. The yields and epoxide oxygen contents indicated were obtained.

#TABLE 1 ______________________________________ Exam- Quantity of peracetic Yield [% of ple acid (40% in glacial the theo- % Epoxide oxygen No. acetic acid) retical] [% by weight] ______________________________________ 190 g 95 2.5 2 285 g 93 3.6 3 380 g 88.5 4.7 4 570 g 83.7 6.7 5 665 g 64.3 7.4 6 950 g 79.0 9.3 7 1140 g 71.1 10.3 8 1425 g 47.5 5.8 ______________________________________