Title:
【発明の名称】単糖、オリゴ糖および多糖を基礎とするグラフト共重合体、その製造方法およびその使用
Document Type and Number:
Japanese Patent JPH11505864
Kind Code:
A
Abstract:
Water-soluble graft copolymers of monosaccharides, oligosaccharides, polysaccharides and their derivatives are obtained by radically initiated copolymerisation of (A) monomer mixtures of (a) more than 40-100 % by weight of at least one alpha - beta -unsaturated aldehyde having general formula (I), in which R<1> stands for hydrogen or linear or branched C1-C4 alkyl, and R<2> stands for hydrogen or methyl, (b) 0-60 % by weight of monoethylenically unsaturated monomers different from (a) but copolymerisable with (a), and (c) 0-5 % by weight of at least two ethylenically unsaturated monomers having no conjugated double bonds in their molecule, in the presence of (B) monosaccharides, oligosaccharides, polysaccharides, polysaccharides decomposed by oxidation, hydrolysis or enzymes, chemically modified mono-, oligo- or polysaccharides or mixtures of said compounds; and (C) one or several oxidants. The weight ratio between (A) and (B) extends from (95: 20) to (5: 80) and the weight ratio between (C) and (A) + (B) extends from (5: 100) to (50: 50). Used as builders or co-builders, these graft copolymers have good scale-inhibiting properties and are extremely biodegradable.
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Inventors:
Stefan Buch Ruth
Rous Dorn
Reinhard Hart
Rous Dorn
Reinhard Hart
Application Number:
JP53530196A
Publication Date:
May 25, 1999
Filing Date:
May 08, 1996
Export Citation:
Assignee:
Degussa Archangel Shaft
International Classes:
C08F251/00; C11D3/37; C11D3/22; (IPC1-7): C08F251/00; C11D3/22; C11D3/37
Attorney, Agent or Firm:
Toshio Yano (3 outside)