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US 11,142,607 B2Granted
Polymer having polyether and polysiloxane segments
AssigneeBYK-Chemie GmbH
InventorsGuillaume Wojciech Jaunky, Marc Eberhardt, Mark Heekeren, Sven Tenbusch, Olaf Muschiolik, Jürgen Hartmann, Petra Della Valentina
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Abstract
The invention relates to a polymer having a) a polymer backbone and b) one or more polymeric side chains covalently linked to the polymer backbone, wherein the polymeric side chains comprise a polyether segment and a polysiloxane segment, said polysiloxane segment having a number average molecular weight in the range of 1050 to 6000, and said polyether segment being positioned between the polymer backbone and the polysiloxane segment.
Claims18
A polymer having
- a) a polymer backbone and
- b) one or more polymeric side chains covalently linked to the polymer backbone, wherein the polymeric side chains comprise a polyether segment and a polysiloxane segment,
- said polysiloxane segment having a number average molecular weight in the range of 1050 to 6000, and said polyether segment having a number average molecular weight in the range of 450 to 5000 and being positioned between the polymer backbone and the polysiloxane segment,
- wherein the polymer has a weight average molecular weight ranging from 4,500 to 15,000.
1 more element
A process for preparing a polymer, the process comprising copolymerizing
- a) a macromonomer MM having one polymerizable ethylenically unsaturated group, a polyether segment, and a polysiloxane segment, said polysiloxane segment having a number average molecular weight in the range of 1050 to 6000, and said polyether segment having a number average molecular weight in the range of 450 to 5000 and being positioned between the polymerizable ethylenically unsaturated group and the polysiloxane segment, and
- b) at least one other further monomer having at least one polymerizable ethylenically unsaturated group,
- the resulting polymer comprising a backbone and one or more polymeric side chains covalently linked to the polymer backbone, wherein the polymeric side chains comprise a polyether segment and a polysiloxane segment, said polysiloxane segment having a number average molecular weight in the range of 1050 to 6000, said polyether segment being positioned between the polymer backbone and the polysiloxane segment, and the resulting polymer having a weight average molecular weight ranging from 4,500 to 15,000.
A process for preparing a polymer, comprising the steps of:
- i) providing
- a) a polymer backbone having at least one functional group and
- b) a molecule having a group which is reactive towards said at least one functional group, a polyether segment, and a polysiloxane segment, said polysiloxane segment having a number average molecular weight in the range of 1050 to 6000, and said polyether segment being positioned between said group which is reactive towards said at least one functional group and the polysiloxane segment, and
- ii) forming a covalent bond between the polymer backbone a) and the molecule b) by reacting the at least one functional group with the group which is reactive towards said at least one functional group,
- the resulting polymer comprising a backbone and one or more polymeric side chains covalently linked to the polymer backbone, wherein the polymeric side chains comprise a polyether segment and a polysiloxane segment, said polysiloxane segment having a number average molecular weight in the range of 1050 to 6000, and said polyether segment having a number average molecular weight in the range of 450 to 5000 and being positioned between the polymer backbone and the polysiloxane segment, and the resulting polymer having a weight average molecular weight ranging from 4,500 to 15,000.
2 more elements
A composition comprising
- a) a polymer in an amout of 0.1 to 15% by weight, based on the total non-volatile content of the composition, the polymer having a polymer backbone and one or more polymeric side chains covalently linked to the polymer backbone, wherein the polymeric side chains comprise a polyether segment and a polysiloxane segment, said polysiloxane segment having a number average molecular weight in the range of 1050 to 6000, and said polyether segment being positioned between the polymer backbone and the polysiloxane segment, and
- b) a binder, which is different from said polymer a).
A process of forming a multilayer coating system on a substrate comprising the steps of
- i) applying a coating composition a) to a substrate to form a coating layer a) and
- ii) applying a coating composition b) to form a coating layer b) on top of coating layer a),
- wherein at least one of the coating composition a) or the coating composition b) comprises a polymer in an amount of 0.1 to 15% by weight, based on the total non-volatile content of the coating composition, the polymer having a polymer backbone and one or more polymeric side chains covalently linked to the polymer backbone, wherein the polymeric side chains comprise a polyether segment and a polysiloxane segment, said polysiloxane segment having a number average molecular weight in the range of 1050 to 6000, and said polyether segment being positioned between the polymer backbone and the polysiloxane segment.
Dependencies are inferred from the claim text.