Process for coating vehicle exterior parts made from thermoplastic composite articles
OwnerAndri E. Elia, Toshikazu Kobayashi +1inventors
InventorsAndri E. Elia, Toshikazu Kobayashi, William Daniel Saunders
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Abstract
A process for coating vehicle parts comprising composite articles having good mechanical properties and smooth surface appearance comprising a reinforced thermoplastic polymeric component and a film.
Claims22
A process for coating a vehicle exterior part with visible polymeric surfaces, comprising the successive steps of applying and curing at least one coating on the visible surfaces of the substrate, wherein the part comprises a composite article, comprising,
- (a) a molded part having a surface and comprising a thermoplastic polymeric composition comprising at least one thermoplastic polymer and at least one reinforcing agent, and
- (b) a thermoplastic polymeric film having first and second surfaces opposite to each other,
- wherein the surface of the first component (a) is adhered to the first surface of the film (b) and wherein the second surface of film (b) forms a part or all of the visible polymeric surfaces;
- and wherein the thermoplastic polymeric composition has a tensile modulus of least about 11 GPa, as measured by ISO method 527-2:1993 at a rate of 5 mm/min on test specimens having a thickness of 4 mm;
- and a notched Charpy impact strength of at least about 35 kJ/m2, as measured by ISO method 179-1:2000.
The process of 1, wherein the thermoplastic polymeric composition comprises about 20 to about 60 weight percent thermoplastic polymer and about 40 to about 80 weight percent reinforcing agent.
A process for coating a substrate comprising a vehicle exterior part assembled from metal parts and at least one polymeric part, with visible metal and plastic surfaces, comprising the successive steps of (1) electrodeposition coating the substrate, removing non-deposited electrodeposition coating agent from the substrate and thermally cross-linking the deposited electrodeposition coating and thereby forming an electrodeposition coating primer on the metal surfaces, and (2) applying and curing at least one coating on the visible surfaces of the substrate, wherein at least some of the polymeric parts making up the visible surfaces of the substrate comprise a composite article, comprising,
- (a) a molded part having a surface and comprising a thermoplastic polymeric composition comprising at least one thermoplastic polymer and at least one reinforcing agent, and
- (b) a thermoplastic polymeric film having first and second surfaces opposite to each other,
- wherein the surface of the first component (a) is adhered to the first surface of the film (b) and wherein the second surface of film (b) forms a part of all of the visible polymeric surfaces;
- and wherein the thermoplastic polymeric composition has a tensile modulus of least about 11 GPa, as measured by ISO method 527-2:1993 at a rate of 5 mm/min on test specimens having a thickness of 4 mm;
- and a notched Charpy impact strength of at least about 35 kJ/m2, as measured by ISO method 179-1:2000.
Dependencies are inferred from the claim text.