Title:
傷手当用品及びその製造並びにその使用に適切な材料の製造
Document Type and Number:
Japanese Patent JP5612551
Kind Code:
B2
Abstract:
Carboxymethylated cellulosic articles having degree of substitution in the range from 0.12 to 0.35 and in which the carboxymethyl groups are believed to be predominantly within the amorphous regions to the exclusion of the crystalline regions have usefully non-adherent properties as wound dressings. Such wound dressings may be made by carboxymethylating a cellulose fabric so that its absorbency is little greater after carboxymethylation than beforehand and the degree of substitution is as stated above. Carboxymethylation can be carried out by contacting cellulose II fibres or other articles with a solution containing sodium hydroxide, sodium chloroacetate, water and ethanol. The solution may contain from 4 to 8 percent by weight sodium hydroxide and from 50 to 60 percent by weight water (including water in the fibre) or the weight ratio of sodium hydroxide to water (including water in the article) may be from 0.095 to 0.115 and the weight ratio of cellulose in the article to water (including water in the article) may be from 0.22 to 0.28.
Inventors:
ペイテル，チャンパ
ブレイ，ロジャー
ブレイ，ロジャー
Application Number:
JP2011203050A
Publication Date:
October 22, 2014
Filing Date:
September 16, 2011
Export Citation:
Assignee:
コンバテック リミティド
International Classes:
A61F13/00; A61L15/00; A61L15/16; A61L15/28; A61L15/60; C08B11/12
Attorney, Agent or Firm:
Aoki 篤
Ishida 敬
Tetsuji Koga
Yoshihiro Kobayashi
Satoru Ideno
Tomoyasu Nagasaka
Ishida 敬
Tetsuji Koga
Yoshihiro Kobayashi
Satoru Ideno
Tomoyasu Nagasaka