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Application filed by Unilever NvfiledCriticalUnilever Nv
Priority to PT6611677ApriorityCriticalpatent/PT66116B/en
Publication of PT66116ApublicationCriticalpatent/PT66116A/en
Publication of PT66116BpublicationCriticalpatent/PT66116B/en
Solid-Sorbent Or Filter-Aiding Compositions
(AREA)
Absorbent Articles And Supports Therefor
(AREA)
Abstract
Adsorbent consists of water-insoluble, cross-linked, gelatinised starch with ionic substits. linked to the starch through ether gps. and associated mono- or di-valent counter ions, pref. ammonium ions, the degree of substn. by the cross-linking gps. being 0.001-0.04, pref. 0.003-0.02 and by the ionic gps. pref. is not 0.1, such that the starch deriv. has a urine retention value of is not 6, pref. 8-20 g/g. The adsorbent is used in prods. for absorbing liquid, esp. a sanitary towel or tampon. Absorption is irreversible and the material is practically dry and non-tacky in the swollen state.
PT6611677A1977-01-261977-01-26Process for making absorbent materials
PT66116B
(en)
Insoluble starch absorbent with high urine retention - is gelatinised, crosslinked and etherified with ionic substit., used for sanitary towels and tampons