Patent ID: 6355771
Filing Date: 2002-03-12
Classification: C08G,C23F

Abstract:
A modified polyaspartic acid comprising a partial structure represented by the formula I: at a molar ratio (I) in the range of not less than 1 to not more than 99 and at least one branched chain structure selected from the group consisting of the formulas II and III at a molar ratio (I) of not less than 1 to not more than 49: wherein the term â€œmolar ratio (I)â€  used herein means the ratio based on the number of moles (100) of a total aspartic residue of a polyaspartic acid, and Asp denotes an aspartic residue, n an integer of not less than 1 to not more than 25, and m an integer of not less than 2 to not more than 2n, M and Mâ€² independently denote a hydrogen atom, an ammonium, or a metal, and (Asp)p denotes a branched chain.