Multilayer structure with a high impact resistance, high melt flow, low water haze cap layer
AssigneeTrinseo Europe GmbH
InventorsNoah E. Macy, Jing-Han Wang
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Abstract
Polymeric resin compositions, and preferably acrylic or styrenic polymeric compositions, which are especially useful as a capstock material for coextrusion over, or lamination onto structural plastics. The polymeric capstock resin compositions contain an efficient small core-shell impact modifier that allows for a novel combination of properties: a high impact resistance capstock resin with high melt flow rate and low water haze that allows for better processability and durability for use in high temperature and high humidity environments. Multilayer structures formed using the polymeric capstock composition over a thermoplastic substrate.
Claims18
A polymeric capstock composition comprising:
- a) 10-95% a thermoplastic matrix;
- b) 5-60% high impact modifiers having a radius <200 nm;
- and
- c) 5-30% additive acrylic polymer comprising:
- 5-90% methyl methacrylate monomer units,
- 10-95% C2-12 alkyl methacrylate monomer units,
- 0-15% methacrylic acid, acrylic acids or C1-5 esters thereof, and
- 0-5% other ethylenically unsaturated monomer units.
Dependencies are inferred from the claim text.