# US 10,870,754 B2 · Overmold material for polycarbonate

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- Number: US 10,870,754 B2
- Document ID: US10870754B2
- Status: Granted
- Kind: B2
- Application number: 16/311,860
- Filed: 2017-06-15
- Published: 2020-04-16
- Granted: 2020-12-22
- Earliest claimed: 2016-06-23
- Assignees: Dow Global Technologies LLC
- Applicants: Dow Global Technologies LLC
- Inventors: Brian M. Habersberger; Colin LiPiShan
- Web page: https://patentgrep.com/patent/US10870754B2

## CPC

- C08L 53/005: {Modified block copolymers}
- B32B 27/32: comprising polyolefins {(comprising vinyl (co)polymers or acrylic (co)polymers B32B27/30)}
- B32B 27/365: {comprising polycarbonates}
- C08F 210/02: Ethene
- C08J 5/12: Bonding of a preformed macromolecular material to the same or other solid material such as metal, glass, leather, e.g. using adhesives
- C08L 23/0815: {with aliphatic 1-olefins containing one carbon-to-carbon double bond}
- C08L 23/0853: Ethylene vinyl acetate copolymers
- C08L 23/0869: with unsaturated acids, e.g. [meth]acrylic acid; with unsaturated esters, e.g. [meth]acrylic acid esters
- C08L 69/00: Compositions of polycarbonates; Compositions of derivatives of polycarbonates
- C08L 53/00: Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
- C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06)
- B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- C08F: MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08J: WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H (working, e.g. shaping, of plastics B29)

## Abstract

The present disclosure provides an article. In an embodiment, the article includes a first structural component and a second structural component. The first structural component includes a polycarbonate composition. The second structural component includes a polymeric blend of (i) an ethylene/α-olefin multi-block copolymer, and (ii) a functional polymer modifier that is an ethylene/ester copolymer. The second structural component is adhered to the first structural component.

## Claims

### Claim 1

An article comprising:
a first structural component comprising a polycarbonate composition; and
a second structural component consisting of a polymeric blend consisting of (i) from 80 wt % percent to 90 wt % of an ethylene/α-olefin multi-block copolymer consisting of ethylene monomer and α-olefin comonomer, and (ii) from 20 wt % to 10 wt % a functional polymer modifier that is an ethylene/ester copolymer;
wherein the ethylene/ester copolymer is an ethylene-based copolymer comprising an ester comonomer having the Structure (1)
wherein each of R1 and R2 independently is a C1-C2 hydrocarbonyl group; and
the second structural component is adhered to the first structural component.

### Claim 2 (depends on 1)

The article of claim 1, wherein the ethylene/α-olefin multi-block copolymer consists of ethylene monomer and octene comonomer.

### Claim 3 (depends on 1)

The article of claim 1, wherein the ethylene/ester copolymer is selected from the group consisting of: (i) ethylene vinyl acetate copolymer, (ii) ethylene methacrylate copolymer, (iii) ethylene ethylacrylate copolymer, and (iv) combinations thereof.

### Claim 4 (depends on 1)

The article of claim 1 wherein the second structural component is overmolded to the first structural component.

### Claim 5 (depends on 1)

The article of claim 1 having a 90° peel strength from 2.5 N/mm to 5.0 N/mm between the second structural component and the first structural component.

### Claim 6 (depends on 5)

The article of claim 5 wherein the second structural component directly contacts the first structural component.

### Claim 7

An article comprising:
a first structural component comprising a polycarbonate composition; and
a second structural component consisting of (i) from 80 wt % to 90 wt % the ethylene/α-olefin multi-block copolymer consisting of ethylene monomer and α-olefin comonomer, and (ii) from 20 wt % to 10 wt % an ethylene vinyl acetate copolymer; and
wherein the second structural component directly contacts and is adhered to the first structural component; and
the article has a 90° peel strength from 3.0 N/mm to 5.0 N/mm between the second structural component and the first structural component.

### Claim 8

An article comprising:
a first structural component comprising a polycarbonate composition; and
a second structural component comprising (i) from 80 wt % to 90 wt % of the ethylene/α-olefin multi-block copolymer, the ethylene/α-olefin multi-block copolymer consisting of ethylene monomer and α-olefin comonomer, and (ii) from 20 wt % to 10 wt % of the an ethylene ethylacrylate copolymer; and
wherein the second structural component directly contacts and is adhered to the first structural component; and
the article has a 90° peel strength from 3.0 N/mm to 5.0 N/mm between the second structural component and the first structural component.

### Claim 9 (depends on 8)

The article of claim 8 wherein the second structural component consists of the ethylene/α-olefin multi-block copolymer and the ethylene ethylacrylate copolymer.