发明名称 |
ABSORBENT GELLING MATERIAL COMPRISING A DRY MIXTURE OF AT LEAST TWO TYPES OF HYDROGEL-FORMING PARTICLES AND METHOD FOR MAKING THE SAME |
摘要 |
By mixing two types of hydrogel-forming particles having different Absorption Against Pressure values, a synergistic effect can be obtained wherein the AAP-value of the mixture is higher than would be expected on the basis of the weight fractions of the components of the mixture. By mixing two types of hydrogel-forming particles having different Teabag Centrifuge Capacity values and equal AAP values, an unexpected increase in the AAP value of the mixture is observed. A method of manufacturing the absorbent gelling material according to the invention comprises the steps of: providing a first type of hydrogel-forming material and a second type of hydrogel-forming material; introducing both types of hydrogel-forming material in a mixing means; and mixing both types of hydrogel-forming particles to form the mixture. Both types of hydrogel-forming material may be formed by a separate polymerisation process in separate batches, followed by mixing the two types of hydrogel-forming particles. Alternatively, a weight fraction of a single type of hydrogel-forming material may be separated from the bulk of the material, may subsequently be treated to increase the AAP value thereof, and may be mixed back into the bulk material. <MATH> |
申请公布号 |
WO9601657(A3) |
申请公布日期 |
1996.05.09 |
申请号 |
WO1995US08379 |
申请日期 |
1995.07.03 |
申请人 |
THE PROCTER & GAMBLE COMPANY;SCHMIDT, MATTIAS;PLISCHKE, MANFRED;GOLDMAN, STEPHEN, ALLEN |
发明人 |
SCHMIDT, MATTIAS;PLISCHKE, MANFRED;GOLDMAN, STEPHEN, ALLEN |
分类号 |
A61F13/53;A61F13/15;A61F13/49;A61L15/22;A61L15/42;A61L15/60;C08L101/14 |
主分类号 |
A61F13/53 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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