Polymer compositions suitable for producing plated products

Patent metadata

Field	Value
Publication number	US-12037688-B2
Application number	US-202017602369-A
Country	US
Kind code	B2
Filing date	Mar 23, 2020
Priority date	Apr 12, 2019
Publication date	Jul 16, 2024
Grant date	Jul 16, 2024

Abstract

A method for the production of metal-plated articles, including the step ofdepositing an electrically-conductive metallic layer on a surface of an article comprising a polymer composition comprising by weight:a) 40-60% of a propylene homopolymer, or propylene copolymer containing up to 5% by weight of ethylene and/or another C4-C10 α-olefin, and having a melting temperature of 155° C. or higher and/or a fraction soluble in xylene at 25° C. of 10% by weight or less;b) 10-20% of an ethylene-based elastoplastic copolymer, optionally, a copolymer of ethylene with C4-C10 α-olefin;c) 2-6% of a styrene block copolymer;d) optionally, up to 3% of a propylene homopolymer having a Melt Flow Rate (230° C./2.16 kg) of 500 g/10 min. or more;e) 15-50% of a filler; andf) optionally, up to 6% of a color pigment.

First claim

What is claimed is:

1. A method for the production of metal-plated articles, comprising the step of
depositing an electrically-conductive metallic layer on a surface of an article comprising a polymer composition comprising by weight:
a) 40-60% of a propylene homopolymer, or propylene copolymer containing up to 5% by weight of ethylene and/or another C 4 -C 10 α-olefin, and having a melting temperature of 155° C. or higher and/or a fraction soluble in xylene at 25° ° C. of 10% by weight or less;
b) 10-20% of an ethylene-based elastoplastic copolymer, optionally, a copolymer of ethylene with C 4 -C 10 α-olefin, wherein the ethylene-based elastoplastic copolymer has a density lower than 0.89 g/cm 3 ;
c) 2-6% of a styrene block copolymer;
d) optionally, up to 3% of a propylene homopolymer having a Melt Flow Rate (230° C./2.16 kg) of 500 g/10 min. or more;
e) 15-50% of a filler; and
f) optionally, up to 6% of a color pigment.

2. The method according to claim 1 , wherein the component (a) is present at concentrations of 45-50% by weight.

3. The method according to claim 1 , wherein the component (b) is present at concentrations of 12-18% by weight.

4. The method according to claim 1 , wherein the component (c) is present at concentrations of 3-4% by weight.

5. The method according to claim 1 , wherein the component (d) is present at concentrations of 1-2% by weight.

6. The method according to claim 1 , wherein the component (e) is present at concentrations of 25-40% by weight.

7. The method according to claim 1 , wherein the component (f) is present at concentrations of 1-4% by weight.

8. The method according to claim 1 , wherein the metal used for plating is selected from the group consisting of copper, chromium, gold, silver, aluminum, nickel and metal alloys.

9. The method according to claim 1 , wherein the color pigment is black.

10. A metal-plated article prepared by the method according to claim 1 .

11. The metal-plated article according to claim 10 , wherein the article is selected from the group consisting of interior automotive parts, exterior automotive parts, and surface automotive parts.

12. The metal-plated article according to claim 10 , wherein the article is a furniture part.

13. The metal-plated article according to claim 10 , wherein in the article is selected from the group consisting of tooling parts and household items.

Assignees

• Basell Poliolefine Italia Srl

Inventors

• Lunghi Luca
• Lujan Abarca Maria Aranzazu
• Foguet Roca Alberto

Classifications

• C25D5/14

  two or more layers being of nickel or chromium, e.g. duplex or triplex layers · CPC title

• C23C18/31

  Coating with metals · CPC title

• C23C18/1653

  Two or more layers with at least one layer obtained by electroless plating and one layer obtained by electroplating · CPC title

• C08L23/12 Primary

  Polypropene · CPC title

• C23C18/52

  using reducing agents for coating with metallic material not provided for in a single one of groups C23C18/32 - C23C18/50 · CPC title