Polyaspartic acid Zwitterionic derivatives, preparation processes thereof, hair-treating compositions and cosmetic compositions
AssigneeMitsui Toatsu Chemicals, Inc.
InventorsYukiko Harada, Hosei Shinoda, Makoto Sukegawa, Hiroaki Tamatani
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Abstract
Disclosed are polymers (polyaspartic acid Zwitterionic derivatives) containing, in the molecule, 1 mol % or more of at least one repeating unit selected from the group consisting of repeating units represented by the following formulas (1) and (2). ##STR1## These polymers are useful in the preparation of hair-treating compositions and cosmetic compositions having excellent hairdressing properties and good biocompatibility.
Claims23
A polymer containing, in the molecule, 1 mol % or more of at least one repeating unit selected from the group consisting of repeating units represented by the following formulas (1) and (2). ##STR14## where R.sup.1 is a hydrogen atom or a lower hydrocarbon radical of 1 to 6 carbon atoms, R.sup.2 and R.sup.5 are each independently a saturated or unsaturated hydrocarbon radical of 1 to 24 carbon atoms, and R.sup.3 and R.sup.4 are each independently a hydrogen atom, or a saturated or unsaturated hydrocarbon radical of 1 to 24 carbon atoms in which R.sup.3 and R.sup.4 may be bonded together to form a six members ring containing nitrogen atom.
Dependencies are inferred from the claim text.