Flame-retardant polyolefin resin composition

Patent metadata

Field	Value
Publication number	US-10508194-B2
Application number	US-201615540085-A
Country	US
Kind code	B2
Filing date	Jan 21, 2016
Priority date	Feb 5, 2015
Publication date	Dec 17, 2019
Grant date	Dec 17, 2019

Abstract

Provided are a flame-retardant polyolefin resin composition with high flame retardancy, particularly sufficient flame retardancy to meet the UL94 5VA standard and a molded article with high flame retardancy, particularly sufficient flame retardancy to meet the UL94 5VA standard. The composition includes 100 parts by mass of a polyolefin resin, (A) 10 to 60 parts by mass of at least one melamine salt selected from the group consisting of melamine orthophosphate, melamine pyrophosphate, and melamine polyphosphate, (B) 15 to 90 parts by mass of at least one piperazine salt selected from the group consisting of piperazine orthophosphate, piperazine pyrophosphate, and piperazine polyphosphate, and (C) 10 to 140 parts by mass of glass fiber.

First claim

The invention claimed is:

1. A flame-retardant polyolefin resin composition comprising 100 parts by mass of a polypropylene resin, 10 to 60 parts by mass of component (A), 15 to 90 parts by mass of component (B), and 10 to 140 parts by mass of component (C):
component (A): melamine pyrophosphate;
component (B): piperazine pyrophosphate: and
component (C): glass fiber;
said composition being free of fluorine-containing anti-drip agents.

2. The flame-retardant polyolefin resin composition according to claim 1 , further comprising 0.01 to 7.5 parts by mass of zinc oxide as component (D) per 100 parts by mass of the polyolefin resin.

3. A molded article obtained from the flame-retardant polyolefin resin composition according to claim 2 .

4. A molded article obtained from the flame-retardant polyolefin resin composition according to claim 1 .

5. The molded article according to claim 4 , having a thickness of 1.6 mm or less.

Assignees

• Adeka Corp

Inventors

• Shimizu Tatsuya
• Ni Yang
• Asai Kei
• Yonezawa Yutaka
• Ishikawa Shinichi

Classifications

• C08K2003/2296

  of zinc · CPC title

• C08K5/5205

  Salts of P-acids with N-bases · CPC title

• C08L23/00 Primary

  Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers · CPC title

• C08K5/34922

  Melamine; Derivatives thereof · CPC title

• C08K7/14

  Glass · CPC title