Additive mixtures for styrenic polymers
AssigneeBASF SE
InventorsAlex Wegmann, Sunghee Kim, Michèle Gerster
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Abstract
The invention describes a process for reducing the amount of saturated or unsaturated monomers and oligomers during production and processing of styrenic polymers comprising a mixture of at least two components selected from the group consisting of a) phenol thioethers, b) phenol acrylates, c) 3-arylbenzofuran-2-ones and d) 1,1-di-substituted ethylenes or tri-substituted ethylenes.
Claims20
A process for reducing the amount of saturated or unsaturated monomers and oligomers during production and processing of styrenic polymers,
- which process comprises adding to the styrenic polymers an additive mixture comprising at least two components selected from the group consisting of a) phenol thioethers, b) phenol acrylates, c) 3-arylbenzofuran-2-ones and d) 1,1-di-substituted ethylenes or tri-substituted ethylenes,
- with the proviso that a mixture comprising a component a) and a component b) contains a third component selected from the group consisting of c) and d).
A mixture for reducing the amount of saturated or unsaturated monomers and oligomers during production and processing of styrenic polymers, comprising at least two components selected from the group consisting of a) phenol thioethers, b) phenol acrylates, c) 3-arylbenzofuran-2-ones and d) 1,1-di-substituted ethylenes or tri-substituted ethylenes;
- with the proviso that a mixture comprising a component a) and a component b) contains a third component selected from the group consisting of c) and d).
A composition comprising
- i) a styrenic polymer, and
- ii) an additive mixture comprising at least two components selected from the group consisting of a) phenol thioethers, b) phenol acrylates, c) 3-arylbenzofuran-2-ones and d) 1,1-di-substituted ethylenes or tri-substituted ethylenes;
- with the proviso that a mixture comprising a component a) and a component b) contains a third component selected from the group consisting of c) and d).
Dependencies are inferred from the claim text.