Functionalized polyorganosiloxanes or silanes for the treatment of lignocellulosic materials
AssigneeMomentive Performance Materials Inc.
InventorsJohannes Gerardus Petrus Delis, Egbert Klaassen, Jörg-Walter Hermann, Holger Militz, Carsten Mai, Malte Pries, Roland Wagner, Karl-Heinz Sockel, Karl-Heinz Stachulla, Karl-Heinz Käsler, Gunnar Hoffmüller
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Abstract
The present invention relates to functionalized polyorganosiloxanes or silanes for the treatment of lignocellulosic materials.
Claims16
A process for treating lignocellulosic material, comprising applying a polyorganosiloxane to lignocellulosic material by a procedure selected from the group of surface treatment, immersion treatment, or vacuum or pressure impregnation to form a coated- or impregnated-lignocellulosic material, wherein said polyorganosiloxane is selected from straight-chained, branched or cyclic polysiloxanes, having a number average of 2 to 30 siloxy units, which are selected from the group consisting of
- wherein the radicals R1 represent organic radicals, which may be the same or different, with the proviso that at least one of the radicals R1 is a radical RF containing a functional group F, which is an acyloxy group Si-bonded via O, and, where other radicals RF are optionally a functional group selected from the group consisting of:
- phosphonium group,
- phosphine group,
- epoxy group,
- carbonate group,
- urethane group,
- isocyanate group including blocked isocyanate group,
- urea group,
- amino group,
- aldehyde group,
- hemiacetal and acetal group,
- enamine group,
- imine group,
- zwitterionic group,
- carboxylic acid/carboxylate group,
- sulfonic acid/sulfonate group,
- sulfuric acid half-ester/sulphate group,
- phosphoric ester/phosphate group
- phosphonic ester/phosphonate group,
- phosphorous ester/phosphite group,
- xanthate/xanthogenate ester group,
- organo amino group Si-bonded via N,
- hydroxy group,
- alkoxy group Si-bonded via O, and
- thiosulfato group.
A composition comprising a lignocellulosic material which is coated or impregnated with a polyorganosiloxane, wherein said polyorganosiloxane is selected from straight-chained, branched or cyclic polyorganosiloxanes, having a number average of 2 to 30 siloxy units, which are selected from the group consisting of
- wherein the radicals R1 represent organic radicals, which may be the same or different, with the proviso that at least one of the radicals R1 is a radical RF containing a functional group F, which is an acyloxy group Si-bonded via O and
- where other radicals RF are optionally a functional group selected from the group consisting of:
- phosphonium group,
- phosphine group,
- epoxy group,
- carbonate group,
- urethane group,
- isocyanate group including blocked isocyanate group,
- urea group,
- amido group,
- aldehyde group,
- hemiacetal and acetal group,
- enamine group,
- imine group,
- zwitterionic group,
- carboxylic acid/carboxylate group,
- sulfonic acid/sulfonate group.
- sulfuric acid half-ester/sulphate group,
- phosphoric ester/phosphate group
- phosphonic ester/phosphonate group,
- phosphorous ester phosphite group,
- xanthate xanthogenate ester group,
- organo amino group Si-bonded via N, hydroxyl group
- alkoxy group Si-bonded via O, and
- thiosulfato group.
A lignocellulosic material which is coated or impregnated with a polyorganosiloxane, wherein said polyorganosiloxane is selected from straight-chained, branched or cyclic polyorganosilexanes, having a number average of 2 to 30 siloxy units, which are selected from the group consisting of
- wherein the radicals R1 represent organic radicals, which may be the same or different, with the proviso that at least one of the radicals R1 is a radical RF containing a functional group F, which is an acyloxy group Si-bonded via O and
- where other radicals RF are optionally a functional group selected from the group consisting of:
- phosphonium group,
- phosphine group,
- epoxy group,
- carbonate group,
- urethane group,
- isocyanate group including blocked isocyanate group,
- urea group,
- amido group,
- aldehyde group,
- hemiacetal and acetal group,
- enamine group,
- imine group,
- zwitterionic group,
- carboxylic acid/carboxylate group,
- sulfonic acid/sulfonate group,
- sulfuric acid half-ester/sulphate group,
- phosphoric ester/phosphate group
- phosphonic ester/phosphonate group,
- phosphorous ester/phosphite group,
- xanthate/xanthogenate ester group,
- organo amino group Si-bonded via N, hydroxy group,
- alkoxy group Si-bonded via O, and
- thiosulfato group.
Dependencies are inferred from the claim text.