Flame retardant polyolefin composition

Patent metadata

Field	Value
Publication number	US-11976186-B2
Application number	US-201917251915-A
Country	US
Kind code	B2
Filing date	Jun 14, 2019
Priority date	Jun 15, 2018
Publication date	May 7, 2024
Grant date	May 7, 2024

Abstract

The invention provides a flame retardant polyolefin composition comprising a) an ethylene based plastomer with a density in the range of 0.850 to 0.915 g/cm 3 and an MFR 2 in the range 0.5-30 g/10 min; b) a propylene based plastomer with a density in the range of 0.860 to 0.910 g/cm 3 and an MFR 2 in the range 0.01-30 g/10 min; and c) a flame retardant.

First claim

The invention claimed is:

1. A flame retardant polyolefin composition comprising:
a) an ethylene based plastomer with a density in the range of 0.850 to 0.915 g/cm 3 and an MFR 2 determined according to ISO 1133 at a temperature of 190° C. and under a load of 2.16 kg in the range 0.5-30 g/10 min;
b) a propylene based plastomer with a density in the range of 0.860 to 0.910 g/cm 3 and an MFR 2 determined according to ISO 1133 at a temperature of 230° C. and under a load of 2.16 kg in the range 0.01-30 g/10 min; and
c) a flame retardant comprising a mixture of an ammonium polyphosphate and a silane functionalised ethylene copolymer.

2. The flame retardant polyolefin composition according to claim 1 , wherein the ethylene based plastomer is a copolymer of ethylene and at least one C3-C10 alpha-olefin.

3. The flame retardant polyolefin composition according to claim 1 , wherein the propylene based plastomer is a copolymer of propylene and ethylene or a C4-C10 alpha-olefin.

4. The flame retardant polyolefin composition of claim 1 , comprising 20 to 90 wt % of the ethylene based plastomer, relative to a total weight of the composition as a whole.

5. The flame retardant polyolefin composition of claim 1 , comprising 5 to 45 wt % of the propylene based plastomer, relative to a total weight of the composition as a whole.

6. The flame retardant polyolefin composition of claim 1 , wherein the flame retardant is present in an amount of 1.5 to 30 wt %, or 2.0 to 30 wt %, or 5.0 to 30 wt %, or 10 to 30 wt %, relative to a total weight of the composition as a whole.

7. The flame retardant polyolefin composition of claim 1 , further comprising a high melt flow rate propylene based plastomer.

8. The flame retardant polyolefin composition according to claim 1 , wherein the silane functionalised ethylene copolymer is a copolymer of ethylene with a methylacrylate comonomer and a vinyl trimethoxysilane comonomer.

9. A method of applying the flame retardant polyolefin composition of claim 1 on a substrate comprising fabric substrate.

10. A process for coating a substrate with the flame retardant polyolefin composition of claim 1 , wherein said process comprises applying said composition to a surface of said substrate.

11. A substrate, coated with a flame retardant polyolefin composition of claim 1 .

12. The substrate as claimed in claim 11 , wherein the substrate is kfabric substrate that is a woven or non-woven.

13. An article comprising at least one component formed from the coated substrate as defined in claim 11 .

14. The article as claimed in claim 13 , wherein the article is selected from the group consisting of office furniture, vehicle interiors, seat cushions, back rest cushions, pillows, upholstered furniture, bed mattresses, wall coverings, shoes, sports bags, inlay of sky boots, sports equipment, carpets, rubber boats, PVC swimming pools, life vests, handbags, purses, table coverings, table mats, stationary, saddlebags, tool bags.

15. The substrate as claimed in claim 12 , wherein the fabric substrate is a knitted fabric.

16. The article as claimed in claim 14 , wherein the shoes comprise tongue, vamp, heel counter, quarter, or a combination thereof.

17. The article as claimed in claim 14 , wherein the sports equipment comprises boxing gloves, boxing balls, or a combination thereof.

18. The article as claimed in claim 14 , wherein the stationary comprises books, wood inlay, or any combination thereof.

Assignees

• Borealis Ag

Inventors

• Kulshreshtha Bhawna
• Defoer Johan

Classifications

• C08L23/0815 Primary

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

• C09D123/0815

  Copolymers of ethene with aliphatic 1-olefins · CPC title

• C08L2205/035

  containing four or more polymers in a blend · CPC title

• C08L2201/02

  Flame or fire retardant/resistant · CPC title

• C08L2205/02

  containing two or more polymers of the same C08L -group · CPC title