# US 11,299,611 B2 · Thermoplastic polyolefin compositions useful for aldehyde abatement

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- Number: US 11,299,611 B2
- Document ID: US11299611B2
- Status: Granted
- Kind: B2
- Application number: 16/640,165
- Filed: 2017-09-29
- Published: 2021-05-27
- Granted: 2022-04-12
- Earliest claimed: 2017-09-29
- Assignees: Dow Global Technologies LLC
- Applicants: Dow Global Technologies LLC
- Inventors: Yahong Zhang; Shaoguang Feng; Jian Zou; Yonghua Gong
- Web page: https://patentgrep.com/patent/US11299611B2

## CPC

- C08L 23/12: Polypropene
- C08K 5/17: Amines; Quaternary ammonium compounds
- C08L 51/06: grafted on to homopolymers or copolymers of aliphatic hydrocarbons containing only one carbon-to-carbon double bond
- C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06)
- C08K: Use of inorganic or non-macromolecular organic substances as compounding ingredients (paints, inks, varnishes, dyes, polishes, adhesives C09)

## Abstract

The present disclosure provides a composition comprising: (A) a polypropylene polymer; (B) a polyolefin elastomer; (C) an amino alcohol compound having the formula (I) defined herein; and (D) an additive component. The present disclosure also provides an article made from the composition.

## Claims

### Claim 1

A composition comprising:
(A) from 65 wt % to 85 wt % of a polypropylene polymer;
(B) from 5 wt % to 35 wt % of a polyolefin elastomer;
(C) from 0.01 wt % to 20 wt % of an amino alcohol compound having the formula (I):
or salt thereof, wherein
RA is a bond or is C(R7R8);
R1 is H, OH or C1-C6 alkyl;
R2 is H, OH or C1-C6 alkyl;
R3, R4, R5, and R6 are independently H, or C1-C6 alkyl;
R7 and R8 are independently H, OH or C1-C6 alkyl;
wherein alkyl in R1-R8 is optionally independently substituted with OH, NR9R19, C1-C6 alkyl, or phenyl, wherein R9 and R19 are independently H or C1-C6 alkyl, and
provided that if neither R7 nor R8 is OH, then at least one of R1 and R2 is OH; and
(D) from 0 wt % to 30 wt % of an additive component.

### Claim 2 (depends on 1)

The composition of claim 1, wherein the polyolefin elastomer is an ethylene/α-olefin copolymer.

### Claim 3 (depends on 1)

The composition of claim 1, wherein the amino alcohol compound having the formula (I) is selected from the group consisting of 2-amino-1-butanol, 2-amino-2-ethyl-1,3-propanediol, 2-amino-2-methyl-1-propanol, 2-amino-1-methyl-1,3-propanediol, 2-amino-2(hydroxymethyl)propane-1,3-diol or tris (hydroxymethyl) aminomethane, N-isopropylhydroxylamine, ethanolamine, diethanolamine, N-methylethanolamine, N-butylethanolamine, monoisopropanolamine, diisopropanolamine, mono-sec-butanolamine, di-sec-butanolamine, and salts thereof.

### Claim 4 (depends on 1)

The composition of claim 1 comprising less than 0.05 mg/m3 formaldehyde, as measured in accordance with the VOC Test Method.

### Claim 5 (depends on 1)

The composition of claim 1 comprising less than 0.20 mg/m3 acetaldehyde, as measured in accordance with the VOC Test Method.

### Claim 6 (depends on 1)

The composition of claim 1 comprising less than 0.01 mg/m3 acrolein, as measured in accordance with the VOC Test Method.

### Claim 7 (depends on 1)

The composition of claim 1 comprising less than 0.01 mg/m3 propionaldehyde, as measured in accordance with the VOC Test Method.

### Claim 8 (depends on 1)

The composition of claim 1 comprising less than 0.01 mg/m3 crotonaldehyde, as measured in accordance with the VOC Test Method.

### Claim 9 (depends on 1)

The composition of claim 1 comprising:
a flexural modulus and tensile modulus of greater than or equal to 940 MPa;
a flexural yield strength of greater than 27 MPa; and
a tensile yield strength of greater than or equal to 19 MPa.

### Claim 10 (depends on 1)

The composition of claim 1 comprising:
an impact strength at 23° C. of greater than 45 kJ/m2; and
an impact strength at −30° C. of greater than 8 kJ/m2.

### Claim 11 (depends on 1)

An article made from the composition of claim 1.

### Claim 12 (depends on 11)

The article of claim 11 in the form of an automobile interior part.