Multistage emulsion polymer
AssigneeBASF Aktiengesellchaft
InventorsJoachim Pakusch, Uwe Dittrich, Harald Röckel, Alan Smith, Erich Gulbins, Li Zhuo
Life of this patent
Estimating the term…
Abstract
A multi-stage emulsion polymer containing at least one first domain having a glass transition temperature Tg of from −10 to +40° C. and at least one second domain having a Tg of from +50 to 120° C., the weight ratio of the first domain to the second domain being within the range from 90:10 to 50:50. The first and/or the second domain containing from 0.1 to 10% by weight of a nitrogen-coutaining adhesion monomer and the first domain containing at least 10% by weight of vinyl aromatic compounds and/or the second domain containing at least 15% by weight of vinyl aromatic compounds and/or C4 to C12 alkylmethacrylates.
Claims33
A multistage emulsion polymer comprising at least one first domain having a glass transition temperature Tg of from −10 to +40° C. and at least one second domain having a Tg of from +50 to 120° C., wherein the weight ratio of the first domain to the second domain is in the range from 90:10 to 50:50, the first domain contains copolymerized units of
- 1a) from 5 to 60% by weight of methyl methacrylate and/or ethyl methacrylate,
- 1b) from 20 to 80% by weight of C4-C12 alkyl acrylate,
- 1c) up to 50% by weight of vinylaromatic compounds,
- 1d) from 0.1 to 5% by weight of ethylenically unsaturated carboxylic acids,
- 1e) up to 5% by weight of ethylenically unsaturated carboxamides,
- 1f) up to 10% by weight of other ethylenically unsaturated monomers,
- and the second domain contains copolymerized units of
- 2a) up to 99.9% by weight of methyl methacrylate and/or ethyl methacrylate,
- 2b) up to 99.9% by weight of vinylaromatic compounds and/or C4 to C12 alkyl methacrylates,
- 2c) from 0.1 to 5% by weight of ethylenically unsaturated carboxylic acids,
- 2d) up to 10% by weight of ethylenically unsaturated carboxamides,
- 2e) up to 10% by weight of other ethylenically unsaturated monomers,
- wherein the first and/or the second domain contains from 0.1 to 10% by weight of a nitrogen-containing adhesion monomer and the first domain contains at least 10% by weight of viniylaromatic compounds, all of the weights based on the respective domain.
A multistage emulsion polymer comprising at least one first domain having a glass transition temperature Tg of from −10 to +40° C. and at least one second domain having a Tg of from +50 to 120° C., wherein the weight ratio of the first domain to the second domain is in the range from 90:10 to 50:50, the first domain contains copolymerized units of
- 1a) from 5 to 60% by weight of methyl methacrylate and/or ethyl methacrylate,
- 1b) from 20 to 80% by weight of C4-C12 alkyl acrylate,
- 1c) up to 50% by weight of vinylaromatic compounds,
- 1d) from 0.1 to 5% by weight of ethylenically unsaturated carboxylic acids,
- 1e) up to 5% by weight of ethylenically unsaturated carboxamides,
- 1f) up to 10% by weight of other ethylenically unsaturated monomers,
- and the second domain contains copolymerized units of
- 2a) up to 99.9% by weight of methyl methacrylate and/or ethyl methacrylate,
- 2b) up to 99.9% by weight of vinylaromatic compounds and/or C4 to C12 alkyl methacrylates,
- 2c) from 0.1 to 5% by weight of ethylenically unsaturated carboxylic acids,
- 2d) up to 10% by weight of ethylenically unsaturated carboxamides,
- 2e) up to 10% by weight of other ethylenically unsaturated monomers,
- wherein the first and/or second domain contains from 0.1 to 10% by weight of a nitrogen-containing adhesion monomer and the second domain contains at least 15% by weight of vinylaromatic compounds, all of the weights based on the respective domain.
A multistage emulsion polymer comprising at least one first domain having a glass transition temperature Tg of from −10 to +40° C. and at least one second domain having a Tg of from +50 to 120° C., wherein the weight ratio of the first domain to the second domain is in the range from 90:10 to 50:50, the first domain contains copolymerized units of
- 1a) from 5 to 60% by weight of methyl methacrylate and/or ethyl methacrylate,
- 1b) from 20 to 80% by weight of C4-C12 alkyl acrylate,
- 1c) up to 50% by weight of vinylaromatic compounds,
- 1d) from 0.1 to 5% by weight of ethylenically unsaturated carboxylic acids,
- 1e) up to 5% by weight of ethylenically unsaturated carboxamides,
- 1f) up to 10% by weight of other ethylenically unsaturated monomers,
- and the second domain contains copolymerized units of
- 2a) up to 99.9% by weight of methyl methacrylate and/or ethyl methacrylate,
- 2b) up to 99.9% by weight of vinylaromatic compounds and/or C4 to C12 alkyl methacrylates,
- 2c) from 0.1 to 5% by-weight of ethylenically unsaturated carboxylic acids,
- 2d) up to 10% by weight of ethylenically unsaturated carboxamides,
- 2e) up to 10% by weight of other ethylenically unsaturated monomers,
- wherein the first and/or the second domain contains from 0.1 to 10% by weight of a nitrogen-containing adhesion monomer and the second domain contains at least 15% by weight of C4-C12 alkyl methacrylates, all of the weights based on the respective domain.
Dependencies are inferred from the claim text.