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US 12,722,363 B2Granted
Multi-layer composite article including polyurethane layer and PC/ABS layer
AssigneeTrinseo Europe GmbH
InventorsNorwin Van Riel, Nicolaas M.A. Hermans, Pascal E.R.E.J. Lakeman
Life of this patent
Estimating the term…
Abstract
The teachings herein are directed to multi-layered articles, methods for making the multi-layered articles, and polymeric compositions for the multi-layered articles. The multi-layered article includes a substrate layer and a cover layer. The substrate layer preferably is a polymeric composition including a polycarbonate, a styrene containing polymer and an acicular filler. The substrate preferably forms a durable bond to the cover layer that maintains adhesion even after heat and climate aging.
Claims20
A multi-layer article for coating with a layer of a water based primer comprising:
- i) a substrate layer having a porosity of 10 volume percent or less and including a polymeric composition, wherein the polymeric composition is a blend comprising:
- 20 to 60 weight percent of a polycarbonate polymer,
- a toughening component including a rubber-modified monovinylidene aromatic thermoplastic including an impact modifier, wherein the impact modifier includes a polybutadiene and an amount of the polybutadiene is from 2 to 10.50 weight percent, based on a total weight of the polymeric composition;
- and
- a filler including a wollastonite having an aspect ratio of about 3 or more, and a median length of about 25 μm to about 150 μm;
- and
- ii) a cover layer of a polyurethane bonded directly to the substrate layer;
- wherein the amount of polyester in the polymeric composition is about zero or less than about 5 weight percent;
- wherein a weight ratio of a concentration of the polycarbonate polymer to a concentration of the toughening component is 65:35 or less
- wherein an amount of any styrene copolymer including maleic anhydride, maleic acid, or other monomer that provides a carboxy group to the styrene copolymer is 1.2 weight percent or less, based on the total weight of any styrene copolymer in the polymeric composition;
- and
- wherein the substrate layer has a thickness from 0.5 mm to 10 mm and the cover layer has a thickness from 0.01 mm to 1.5 mm;
- wherein the polymeric composition has a CLTE of less than 40×10−6 cm/cm/° C.
10 more elements
A multi-layer article for coating with a layer of a water based primer comprising:
- i) a substrate layer including a polymeric composition, wherein the polymeric composition is a blend comprising:
- less than 60 weight percent of a polycarbonate polymer,
- a toughening component including a rubber-modified monovinylidene aromatic thermoplastic including an impact modifier, wherein the impact modifier includes a polybutadiene, and an amount of the polybutadiene is from 2 to 10.50 weight percent based on the total weight of the polymeric composition;
- and
- a filler including a wollastonite having an aspect ratio of about 3 or more, and a median length of about 25 μm to about 150 μm;
- and
- ii) a cover layer of a polyurethane bonded directly to the substrate layer;
- wherein the amount of polyester in the polymeric composition is about zero or less than 1.9 weight percent;
- wherein the amount of any styrene copolymer including maleic anhydride, maleic acid, or other monomer that provides a carboxyl group to the styrene copolymer in the substrate layer is 0.25 weight percent or less, based on the total weight of the polymeric composition;
- and
- wherein the substrate layer has a thickness from 0.5 mm to 10 mm and the cover layer has a thickness from 0.01 mm to 1.5 mm;
- wherein the total amount of the wollastonite, the toughening component, and the polycarbonate in the substrate layer is about 98 weight percent or more, based on the total weight of the substrate layer;
- wherein the polymeric composition has a CLTE of less than 40×10−6 cm/cm/° C.
10 more elements
A multi-layer article for coating with a layer of a water based primer comprising:
- i) a substrate layer including a polymeric composition, wherein the polymeric composition is a blend comprising:
- 55 weight percent or less of a polycarbonate polymer,
- a toughening component including a rubber-modified monovinylidene aromatic thermoplastic including an impact modifier, wherein the impact modifier includes a polybutadiene, wherein an amount of the polybutadiene is from 2 to 10.50 weight percent based on the total weight of the polymeric composition;
- and
- 11 to 35 weight percent wollastonite, wherein the wollastonite has an aspect ratio of about 3 or more, and a median length of about 25 μm to about 150 μm;
- and
- ii) a cover layer of a polyurethane bonded directly to the substrate layer;
- wherein the amount of polyester in the polymeric composition is about zero or less than 5 weight percent;
- wherein a weight ratio of the concentration of the polycarbonate to the concentration of the toughening component is 65:35 or less;
- and
- wherein the substrate layer has a thickness from 0.5 mm to 10 mm and the cover layer has a thickness from 0.01 mm to 1.5 mm;
- wherein the toughening component includes or consists of a mass ABS;
- wherein the polymeric composition has a CLTE of less than 40×10−6 cm/cm/° C.
10 more elements
Dependencies are inferred from the claim text.