Coated Article

Patent metadata

Field	Value
Publication number	US-2016017134-A1
Application number	US-201414771756-A
Country	US
Kind code	A1
Filing date	Mar 4, 2014
Priority date	Mar 5, 2013
Publication date	Jan 21, 2016
Grant date	—

Abstract

An article is provided that includes a blend. The blend includes from at least 5.0% to at most 20.0% by weight of polylactic acid (PLA), based on the total weight of the blend; at least 5.0% to at most 92.0% by weight of polypropylene (PP) or of a mixture of polypropylene (PP) and polyethylene (PE), based on the total weight of the blend; from 0.0% to at most 40.0% by weight of an inorganic filler, based on the total weight of the blend; at least 0.1% to at most 10.0% by weight of a compatibilizer, based on the total weight of the blend; and at least 0.1% to at most 40.0% by weight of an elastomer, based on the total weight of the blend. The elastomer is ethylene octene rubber or ethylene butene monomer rubber. The article is at least partially coated with at least one coating.

First claim

1 . An article, wherein the article comprises a blend comprising:
at least 5.0% to at most 20.0% by weight of polylactic acid, based on a total weight of the blend; at least 5.0% to at most 92.0% by weight of polypropylene or of a mixture of polypropylene and polyethylene, based on the total weight of the blend; from 0.0% to at most 40.0% by weight of an inorganic filler, based on the total weight of the blend; at least 0.1% to at most 10.0% by weight of a compatibilizer, based on the total weight of the blend; and at least 0.1% to at most 40.0% by weight of an elastomer, based on the total weight of the blend, wherein the elastomer is selected from the group consisting of ethylene octene rubber and ethylene butene monomer rubber;
wherein said article is at least partially coated with at least one coating.

2 . An article obtainable by a process comprising the steps of:
preparing a blend comprising:
at least 5.0% to at most 20.0% by weight of polylactic acid, based on a total weight of the blend;
at least 5.0% to at most 92.0% by weight of polypropylene or of a mixture of polypropylene and polyethylene, based on the total weight of the blend;
from 0.0% to at most 40.0% by weight of an inorganic filler, based on the total weight of the blend;
at least 0.1% to at most 10.0% by weight of a compatibilizer, based on the total weight of the blend; and
at least 0.1% to at most 40.0% by weight of an elastomer, based on the total weight of the blend, wherein the elastomer is selected from the group consisting of ethylene octene rubber and ethylene butene monomer rubber;
molding the blend into the article; and at least partially coating the article with at least one coating.

3 . The article according to claim 2 , wherein said process is free of any flaming step.

4 . The article according to claim 1 , wherein said article is an injection molded article.

5 . The article according to claim 1 , wherein the article is at least partially coated with at least one coating selected from the group consisting of: a paint, a varnish, an adhesive, a lacquer, and combinations thereof.

6 . The article according to claim 1 , wherein the blend comprises at least 7.0% to at most 13.0% by weight of polylactic acid, based on the total weight of the blend.

7 . The article according to claim 1 , wherein the elastomer is present in a concentration ranging from 7.0 to 25.0% by weight based on the total weight of the blend.

8 . The article according to claim 1 , wherein the blend comprises at least 5.0% of talc as inorganic filler, based on the total weight of the blend.

9 . The article according to claim 1 , wherein the polypropylene or the mixture of polypropylene and polyethylene has a melt index MI 2 of at least 4.0 g/10 min and at most 100.0 g/10 min, as determined at 230° C. under a 2.16 kg load in accordance with ISO 1133.

10 . The article according to claim 1 , wherein the polylactic acid has a melt index MI 2 of at least 10.0 g/10 min and at most 80.0 g/10 min, as determined at 210° C. under a 2.16 kg load in accordance with ASTM D1238.

11 . The article according to claim 1 , wherein the compatibilizer comprises an epoxy-functionalized polyolefin or a co- or a ter-polymer comprising:
(a) 50.0 to 99.9 wt % of ethylene or styrene monomer; (b) 0.1 to 50.0 wt % of an unsaturated anhydride-, epoxide- or carboxylic acid-containing monomer; and (c) 0.0 to 50.0 wt % of a (meth)acrylic ester monomer.

12 . The article according to claim 1 , wherein the article is an automotive part.

13 . A vehicle comprising the automotive part according to claim 12 .

14 . A process for forming an article, the process comprising the steps of:
preparing a blend comprising:
at least 5.0% to at most 20.0% by weight of polylactic acid, based on a total weight of the blend;
at least 5.0% to at most 92.0% by weight of polypropylene or of a mixture of polypropylene and polyethylene, based on the total weight of the blend;
from 0.0% to at most 40.0% by weight of an inorganic filler, based on the total weight of the blend;
at least 0.1% to at most 10.0% by weight of a compatibilizer, based on the total weight of the blend; and
at least 0.1% to at most 40.0% by weight of an elastomer, based on the total weight of the blend, wherein the elastomer is selected from the group comprising of ethylene octene rubber and ethylene butene monomer rubber;
molding the blend into the article; and at least partially coating the article with at least one coating.

15 . The process according to claim 14 , wherein said process is free of any flaming step.

Assignees

• Total Res & Technology Feluy

Inventors

• Desille Gabriel

Classifications

• C08L23/12 Primary

  Polypropene · CPC title

• C08K3/013

  Fillers, pigments or reinforcing additives · CPC title

• C08L23/0815

  with aliphatic 1-olefins containing one carbon-to-carbon double bond · CPC title

• C08L67/04

  Polyesters derived from hydroxycarboxylic acids, e.g. lactones (C08L67/06 takes precedence) · CPC title

• C08L23/16

  Ethylene-propylene or ethylene-propylene-diene copolymers · CPC title