Title:
水吸収性の平坦な物品を製造する方法およびその使用
Document Type and Number:
Japanese Patent JP3888644
Kind Code:
B2
Abstract:
The present invention relates to a process for producing water-absorbing sheet-like materials which consist of a water-absorbent polymer and a prefabricated nonwoven fabric, wherein the prefabricated nonwoven fabric is impregnated with a solution comprising partially neutralized acrylic acid and at least one cross-linking agent and is squeezed to a certain coating amount, and the monomer solution thus applied is characterized in that the polymerization is carried out in the presence of radical initiators which cannot be activated thermally and at least one thermally activatable radical former used in addition. The additional use of a thermally activatable radical former in the polymerization results in products having a low residual monomer content, an improved water absorption under load, and a higher retention, with a production method being employed which is technically simple and economically efficient at the same time. The thermally activatable initiator portion may either be added to the monomer solution or applied to the substrate in an amount of 0.01 to 0.5 mole percent, relative to the monomer to be polymerized.
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Inventors:
Howen, Yochen
Hermann, Edgar
Damen, Kurt
Hermann, Edgar
Damen, Kurt
Application Number:
JP50035196A
Publication Date:
March 07, 2007
Filing Date:
June 03, 1995
Export Citation:
Assignee:
Stockhausen Game Behr
International Classes:
A01G1/00; D06M14/32; A01G31/00; A61F13/49; A61F13/53; A61L15/00; A61L15/60; C08F2/00; C08F4/04; C08F4/40; C08F20/06; C08F220/06; D04H1/435; D04H1/587; D04H1/645; D04H13/00; D06M14/00; D06M14/02; D06M14/08; D06M14/14; D06M14/26; D06M15/263
Domestic Patent References:
| JP4218502A | ||||
| JP5168350A | ||||
| JP6057610A | ||||
| JP1121308A | ||||
| JP62097978A | ||||
| JP62053309A | ||||
| JP62022811A |
Attorney, Agent or Firm:
Shuji Iwamiya