Branched polyurethanes, formulations comprising them, and their use for thickening aqueous systems
AssigneeGoldschmidt GmbH
InventorsSandra Bauer, Dirk Edelmann, Eberhard Esselborn, Markus Hoschke, Günthern Link, Stefan Silber
Life of this patent
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Abstract
Branched polyurethanes which are preparable by reacting A) one or more aliphatic and/or aromatic isocyanates having a functionality of at least three with B) from 90.0 to 99.8 eq. % of one or more polyethers of the structure RO(SO)w(BO)x(PO)y(EO)zH and C) from 0.2 to 10.0 eq. % of at least one of the compounds from the following group: a. polyethers b. polyether polydimethylsiloxane diols c. polyester polydimethylsiloxane diols d. polydimethylsiloxane diols e. polydimethylsiloxane diamines f. polyether diamines.
Claims25
A branched polyurethane obtainable by reacting
- A) one or more aliphatic and/or aromatic isocyanates having a functionality of at least three with
- B) from about 90.0 to about 99.8 eq. % of one or more polyethers of structure
- RO(SO)w(BO)x(PO)y(EO)zH
- and
- C) from about 0.2 to about 10.0 eq. % of at least one of the compounds from the following group:
- a. polyethers of structure
- HO(SO)w′(BO)x′(PO)y′(EO)z′H
- b. polyether polydimethylsiloxane diols of structure
- HO(SO)w′(BO)x′(PO)y′(EO)z′Z-PDMS-Z(EO)z′(PO)y′(BO)x′(SO)w′OH
- c. polyester polydimethylsiloxane diols of structure
- H—(OC5H10CO-)y′-Z-PDMS-Z-(CO—C5H10O-)y′-H
- d. polydimethylsiloxane diols of structure
- HO—Y-PDMS-Y—OH
- e. polydimethylsiloxane diamines of structure
- R′NH—Y-PDMS-Y—HNR′
- f. polyether diamines of structure
- R′HN—(PO)y′(EO)z′-X-(EO)z′(PO)y′-NHR′
- in which
- R is hydrogen or a hydrocarbon radical which is optionally substituted or functionalized,
- R′ is hydrogen or a hydrocarbon radical which is optionally substituted or functionalized,
- SO=styrene oxide,
- BO=butylene oxide,
- PO=propylene oxide,
- EO=ethylene oxide,
- PDMS=polydimethylsiloxane
- w=0 to 5,
- x=0 to 5,
- y=0 to 20,
- z=50 to 200,
- w′=0 to 5,
- x′=0 to 5,
- y′=0 to 10,
- z′=1 to 49,
- Z=—CnH2nO— or —CH2—CH2O—CnH2nO—, where n=2to 12;
- X=—CnH2n— or —C6H4—, where n=2 to 12;
- Y=—CmH2m, in which m=1 to 8.
A branched polyurethane obtainable by reacting
- A) one or more aliphatic and/or aromatic isocyanates having a functionality of at least three with
- B) from 90.0 to 99.8 eq. % of one or more polyethers of structure
- RO(SO)w(BO)x(PO)y(EO)zH
- and
- C) from 0.2 to 10.0 eq. % of at least one of the compounds from the following group:
- polyethers of structure
- HO(SO)w′(BO)x′(PO)y′(EO)z′H
- b. polyether polydimethylsiloxane diols of structure
- HO(SO)w′(BO)x′(PO)y′(EO)z′Z-PDMS-Z(EO)z′(PO)y′(BO)x′(SO)w′OH
- c. polyester polydimethylsiloxane diols of structure
- H—(OC5H10CO-)y′-Z-PDMS-Z-(CO—C5H10O-)y′-H
- d. polydimethylsiloxane diols of structure
- HO—Y-PDMS-Y—OH
- e. polydimethylsiloxane diamines of structure
- R′NH—Y-PDMS-Y—HNR′
- f. polyether diamines of structure
- R′HN—(PO)y′(EO)z′-X-(EO)z′(PO)y′-NHR′
- in which
- R is hydrogen or a hydrocarbon radical of 1 to 50 carbon atoms which is optionally substituted or functionalized,
- R′ is hydrogen or a hydrocarbon radical of 1 to 8 carbon atoms which is optionally substituted or functionalized,
- SO=styrene oxide,
- BO=butylene oxide,
- PO=propylene oxide,
- EO=ethylene oxide,
- PDMS=polydimethylsiloxane
- w=0 to 5,
- x=0 to 5,
- y=0 to 20,
- z=50 to 200,
- w′=0 to 5,
- x′=0to 5,
- y′=0to 10,
- z′=1 to 49,
- Z=—CnH2nO— or —CH2—CH2—O—O—CnH2nO—, where n=2to 12;
- X=—CnH2n— or —C6H4—, where n=2 to 12;
- Y=—CmH2m, in which m=1 to 8.
Dependencies are inferred from the claim text.