23-01-2020 дата публикации
Номер: US20200023337A1
Принадлежит:
The invention relates to a method for absorbing liquids (P) containing compounds (V) selected from water and alkanols, the oxygen content of which in weight percentage is at least 27%, said content being present in the loan of hydroxy groups or hydroxy and ether groups, into a solid silicone-containing polymer (P) which contains at least one siloxane unit of the general formula I (R(X)SiOand no units or at least one unit of the general formula II (RSiO, in which R, R, x, a, b, and c have the meanings described in claim wherein the liquids (P) are brought into contact with the solid silicone-containing polymer (P). 1. A method for absorbing liquids (L) comprising: [{'br': None, 'sup': '1', 'sub': b', 'c', '[4−(b+c)]/2, 'R(X)SiO\u2003\u2003(I).'}, {'br': None, 'sup': '2', 'sub': a', '(4−a)/2, 'RSiO\u2003\u2003(II),'}], 'contacting the liquids (L) with solid, silicone-containing polymers (P), wherein the solid, silicone-containing polymers (P) contain at least one siloxane unit of general formula I and optionally at least one unit of general formula II'}in which{'sup': 1', '2', 'x', '3, 'sub': 2', 'd, 'Rand Rare independently hydrogen or an unbranched, branched or cyclic saturated or unsaturated alkyl group with 1 to 20 C atoms or aryl group or aralkyl group, wherein individual non-adjacent methylene units may be replaced by —O—, —CO—. —COO—, —OCO— or —OCOO—, —S— or NRgroups or by an oxyalkylene group of general formula (—O—CH—CHR—),'}{'sup': '3', 'Ris hydrogen or alkyl.'}{'sup': 'x', 'sub': 1', '10, 'Ris hydrogen or a C-Chydrocarbon residue that is unsubstituted or substituted with substituents selected from —CN and halogen,'} {'br': None, 'sup': 4', '5', '6, 'sub': 2', 'e, '—Y—NR—(CH)—CRRCOOM,'}, 'X is a residue bearing at least one amino acid unit and linked to the silicon atom through a carbon atom, having the general formula'}{'sup': 10', '+, 'sub': '4', 'M is hydrogen, metal, or an ammonium residue NR.'}{'sup': '10', 'sub': 1', '12, 'Ris independently hydrogen or ...
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