Polymer mixture of hydrogels with different pH value

Details Polymer mixture of hydrogels with different pH value Polymer mixture of hydrogels with different pH value

2006-12-05

2006-12-05

Seidleck, James J. (Department: 1711)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

C525S179000, C525S218000, C525S221000, C525S227000, C524S522000, C524S916000

Reexamination Certificate

active

07144957

ABSTRACT:
The present invention relates to polymer mixtures comprising hydrogel forming polymers capable of absorbing aqueous fluids, having different pH values and each being preparable by polymerization of olefinically unsaturated carboxylic acids or derivatives thereof, their preparation, use and hygiene articles containing same. More particularly, the invention relates to 2-component polymer mixtures comprising polymers having a pH range from acidic to neutral.

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