公开(公告)号：WO1997011989A1

公开(公告)日：1997-04-03

申请号：PCT/US1996013938

申请日：1996-08-29

Applicant: KIMBERLY-CLARK WORLDWIDE, INC.

Inventor： KIMBERLY-CLARK WORLDWIDE, INC. ,  MYERS, David, L.

IPC: C08J07/14

CPC classification number: D21C9/004 ,  A61L15/26 ,  C08B5/14 ,  C08F8/36 ,  C08J7/12 ,  D06M10/001 ,  D06M10/06 ,  D06M11/34 ,  D06M11/54 ,  C08F110/02 ,  C08F112/08 ,  C08F110/06 ,  C08L101/02

Abstract: Methods of sulfonating a polymer are provided. One method of sulfonating a polymer includes exposing sulfur dioxide and oxygen to free radical producing energy and contacting the polymer with the product of preceding step. Desirably, the steps of exposing sulfur dioxide and oxygen to free radical producing energy and contacting the polymer with this product are performed in a reduced pressure environment. Another method of sulfonating a polymer includes contacting the polymer with sulfur dioxide and oxygen and exposing the contacted polymer to free radical producing energy. The polymer may be contacted with a mixture of sulfur dioxide and oxygen or the polymer may be separately contacted with sulfur dioxide and oxygen. When the polymer is separately contacted with sulfur dioxide and oxygen, the polymer may first be contacted with sulfur dioxide and then contacted with oxygen. The source of the free radical producing energy may be ultra-violet light, electron beam, noble gas radio frequency (rf) plasma, corona discharge, or gamma radiation.

Abstract translation: 提供磺化聚合物的方法。 磺化聚合物的一种方法包括将二氧化硫和氧气暴露于自由基产生能量并使聚合物与前述步骤的产物接触。 理想地，将二氧化硫和氧气暴露于自由基产生能量并使聚合物与该产物接触的步骤在减压环境中进行。 磺化聚合物的另一种方法包括使聚合物与二氧化硫和氧接触并使接触的聚合物暴露于产生自由基的能量。 聚合物可以与二氧化硫和氧气的混合物接触，或者聚合物可以分开与二氧化硫和氧气接触。 当聚合物与二氧化硫和氧气分开接触时，聚合物可以首先与二氧化硫接触，然后与氧接触。 自由基产生能量的来源可以是紫外光，电子束，惰性气体射频（rf）等离子体，电晕放电或γ辐射。

公开(公告)号：WO1996015137A1

公开(公告)日：1996-05-23

申请号：PCT/US1995014729

申请日：1995-11-13

Applicant: THE PROCTER & GAMBLE COMPANY ,  FORNASARI, Giancarlo ,  TORRI, Giangiacomo ,  CARLUCCI, Giovanni ,  GAGLIARDINI, Alessandro

Inventor： THE PROCTER & GAMBLE COMPANY

IPC: C07H05/04

CPC classification number: C08B15/005 ,  A61L15/28 ,  A61L15/60 ,  C08B5/14 ,  C08L1/00

Abstract: The invention relates to an anionic polysaccharide having superabsorbent characteristics, its polysaccharide being substituted by sulphate groups and the polysaccharide being cross-linked to a sufficient extent that it remains insoluble in water. The polysaccharide is preferably cellulose. The anionic polysaccharide can be made by a process which comprises (i) reacting a polysaccharide with a pyridine -SO3 complex in a solvent; followed by (ii) reacting with a cross-linking agent to provide a degree of cross-linking sufficient that the product remains insoluble in water. The sulphated polysaccharides show superabsorbent properties largely independent of pH over a wide range and can be used in applications where it is desired to absorb salt containing aqueous liquids, for example in diapers and catamenials.

Abstract translation: 本发明涉及一种具有超吸收特性的阴离子多糖，其多糖被硫酸盐基团取代，并且多糖被充分交联，使其保持不溶于水。 多糖优选为纤维素。 阴离子多糖可以通过以下方法制备：（i）使多糖与吡啶-SO 3配合物在溶剂中反应; 然后（ii）与交联剂反应以提供一定程度的交联，足以使产物保持不溶于水。 硫酸化多糖在很宽范围内显示出与pH无关的超吸收性质，并且可以用于需要吸收含有水性液体的盐的应用中，例如在尿布和月经中。

公开(公告)号：WO1988000211A1

公开(公告)日：1988-01-14

申请号：PCT/SE1987000302

申请日：1987-06-26

Applicant: PHARMACIA AB ,  DE BELDER, Anthony, Norman ,  AHRGREN, Leif ,  MÄLSON, Tomas

Inventor： PHARMACIA AB

IPC: C08B15/00

CPC classification number: C08B31/063 ,  C08B5/14 ,  C08B37/0021 ,  C08B37/0057

Abstract: A new method for preparation of sulfated polysaccharides by means of pyridine-chlorosulfonic acid reagents. The polysaccharide is before sulfation treated with a reducing agent, e.g. sodium borohydride.