FLAME RETARDANT AND FLAME RETARDANT COMPOSITION USING SAME, MOLDED ARTICLE THEREOF, AND ELECTRIC WIRE WITH COATING

• US 20100212930A1
• Filed: 05/15/2008
• Published: 08/26/2010
• Est. Priority Date: 05/15/2007
• Status: Active Grant

• Current Assignee: Equistar Chemicals LP (Lyondellbasell Industries NV)
• Original Assignee: SunAllomer, Ltd. (Resonac Holdings Corp.)
• Inventors: Gotou, Mutsunori, Yasumoto, Kazuhisa
• Granted Patent: US 8,617,437 B2
• Time in Patent Office: Days
• US Class Current: 174/110.SR
• CPC Class Codes: C08K 3/22 of metals
• CPC Class Codes: C08K 3/34 Silicon-containing compounds
• CPC Class Codes: C09K 21/02 Inorganic materials
• CPC Class Codes: H01B 7/295 using material resistant to flame

Abstract

The flame retardant of the present invention has a flame retardant (a) component, comprising 50 to 97% by mass of a metal hydrate (a-1) component and 3 to 50% by mass of a filler (a-2) component, wherein the filler (a-2) component contains SiO₂, Al₂O₃ and M_2/nO. Here, the total of the metal hydrate (a-1) component and the filler (a-2) component is 100% mass, M represents one or more metal elements selected from a group consisting of K, Na, Mg, Ca, Fe and Zn, and n represents a valence of the metal element. According to the present invention, it is possible to provide a flame retardant capable of providing a molded article and an electric wire with a coating, which are excellent in flame retardancy, abrasion resistance and flexibility, and also have sufficient mechanical strength at low cost.

Claims

1. A flame retardant that has a flame retardant (a) component, comprising 50 to 97% by mass of a metal hydrate (a-1) component and 3 to 50% by mass of a filler (a-2) component, wherein

the filler (a-2) component contains SiO₂, Al₂O₃ and M_2/nO,

where the total of the metal hydrate (a-1) component and the filler (a-2) component is 100% by mass, M represents one or more metal elements selected from a group consisting of K, Na, Mg, Ca, Fe and Zn, and n represents a valence of the metal element.

2. The flame retardant according to claim 1, wherein the metal hydrate (a-1) component is a particulate magnesium hydroxide or particulate aluminum hydroxide, and average particle diameter of the component is 2 μ

m or less.

3. The flame retardant according to claim 1, wherein the filler (a-2) component is a zeolite represented by a general formula:

xM_2/nO.Al₂O₃.ySiO₂.zH₂O,

where M represents one or more metal elements selected from a group consisting of K, Na, Mg, Ca, Fe and Zn, n represents a valence of the metal element, and x, y and z represent arbitrary positive value.

4. The flame retardant according to claim 3, wherein the zeolite is a synthetic zeolite and y in the general formula xM_2/nO.Al₂O₃.ySiO₂.zH₂O is any one of 1 to 5.

5. The flame retardant according to claim 1, wherein a moisture content of the filler (a-2) component is 10% by mass or more.

6. The flame retardant according to claim 1, wherein a mass ratio (a-1)/(a-2) of the metal hydrate (a-1) and the filler (a-2) component is from 2.3 to 4.0.

7. A flame retardant composition comprising an organic polymer material (b) component, and the flame retardant (a) component according to claim 1 in an amount of 30 to 250 parts by mass based on 100 parts by mass of the organic polymer material (b) component.

8. The flame retardant composition according to claim 7, wherein the organic polymer material (b) component comprises one or more selected from a group consisting of an α

-olefin (co)polymer of 2 to 12 carbon atoms (b-1) component, a thermoplastic elastomer (b-2) component and a rubber (b-3) component;

and 0.01 to 0.5% by mass of a constitutional unit derived from an unsaturated monomer having a carboxylic acid group or carboxylic anhydride group is contained in 100% by mass of the organic polymer material (b) component.

9. A molded article using the flame retardant according to any one of claims 1 to 6.

10. A molded article using the flame retardant composition according to any one of claims 7 to 8.

11. An electric wire with a coating, using the flame retardant according to any one of claims 1 to 6.

12. An electric wire with a coating, using the flame retardant composition according to any one of claims 7 to 8.