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US 12,180,319 B1Granted
Silicone polyethers
AssigneeDow Silicones Corporation
InventorsMirasbek Kuterbekov, Sophie Hanssens, Stephane Ugazio
Life of this patent
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Abstract
A class of silicone polyethers represented by formula (I) along with methods for their preparation including the steps of combining: a) a polyorganohydrogensiloxane (“—SiH polymer”) as represented by formula (VI) and b) a polyoxyalkylene as represented by formula (VII) in the presence of c) a hydrosilylation catalyst.
Claims15
A silicone polyether represented by the following formula:
- wherein:
- R is the same or different and is selected from:
- H and a hydrocarbon group comprising from 1 to 18 carbon atoms with the proviso that R comprises less than 80 mol % H,
- m is an integer from 0 to 100,
- n is an integer from 10 to 500, and
- Z is the same or different and is selected from:
- Y, OH and an organosiloxane group represented by the following formula:
- (II):
- wherein R is as previously defined, R′ is an aliphatic bivalent hydrocarbon group having from 2 to 4 carbon atoms, and t is 10 to 800;
- Y is represented by following formula:
- wherein:
- R1 is the same or different and is selected from an aliphatic hydrocarbon group comprising from 8 to 20 carbon atoms;
- R2 is represented by the following formula:
- -(AO)q—X wherein:
- A is the same or different and is selected from aliphatic bivalent hydrocarbon group having from 2 to 4 carbon atoms with the proviso that (AO)q comprises at least 3 ethylene oxide moieties
- q is an integer from 3 to 40, and
- X is the same or different and is selected from:
- H and an aliphatic hydrocarbon group having from 1 to 4 carbon atoms;
- and
- R3 is the same or different and is an aliphatic bivalent hydrocarbon group comprising from 1 to 4 carbon atoms,
- with the proviso that Z comprises:
- i) 10 to 80 mol % of Y,
- ii) 0 to 60 mol % OH, and
- i) 0 to 60 mol % of the organosiloxane group of formula II.
21 more elements
A silicone polyether represented by the following formula:
- wherein:
- R is the same or different and is selected from:
- H and a hydrocarbon group comprising from 1 to 18 carbon atoms with the proviso that R comprises less than 80 mol % H,
- m is an integer from 0 to 100,
- n is an integer from 10 to 500,
- R1 is the same or different and is selected from an aliphatic hydrocarbon group comprising from 8 to 20 carbon atoms;
- R2 is represented by the following formula:
- -(AO)q—X wherein:
- A is the same or different and is selected from aliphatic bivalent hydrocarbon group having from 2 to 4 carbon atoms with the proviso that (AO)q comprises at least 3 ethylene oxide moieties
- q is an integer from 3 to 40, and
- X is the same or different and is selected from:
- H and an aliphatic hydrocarbon group having from 1 to 4 carbon atoms;
- and
- R3 is the same or different and is an aliphatic bivalent hydrocarbon group comprising from 1 to 4 carbon atoms.
11 more elements
A method for preparing a silicone polyether comprising the steps of combining the following components:
- a) a polyorganohydrogensiloxane represented by the following formula:
- wherein:
- R is the same or different and is selected from:
- H and a hydrocarbon group comprising from 1 to 18 carbon atoms with the proviso that R comprises less than 80 mol % H, m is an integer from 0 to 100, and n is an integer from 10 to 500,
- b) a polyoxyalkylene represented by the following formula:
- wherein:
- R1 is the same or different and is selected from an aliphatic hydrocarbon group comprising from 8 to 20 carbon atoms,
- R2 is represented by the following formula:
- -(AO)q—X
- wherein:
- A is the same or different and is selected from aliphatic bivalent hydrocarbon group having from 2 to 4 carbon atoms with the proviso that (AO)q comprises at least 3 ethylene oxide moieties,
- q is an integer from 3 to 40, and
- X is the same or different and is selected from:
- H and an aliphatic hydrocarbon group having from 1 to 4 carbon atoms, and
- R3 is the same or different and is an aliphatic bivalent hydrocarbon group comprising from 1 to 4 carbon atoms, and
- R4 is the same or different and is selected from alkenyl and alkynyl, and
- c) a hydrosilylation catalyst.
14 more elements
Dependencies are inferred from the claim text.