IP Library › Granted Patent US 9,422,410
Granted Patent B2
US 9,422,410 · App. 14/653,366 · Granted Aug 23, 2016

Flame-retardant foamed styrene resin composition

Inventors: Masahito Nishiura (Kyoto, JP); Hideaki Onishi (Kyoto, JP); Hisanori Semori (Kyoto, JP); Naomi Toyoshima (Kyoto, JP)
Assignee: DAI-ICHI KOGYO SEIYAKU CO., LTD.
C08J9/142C08J9/0019C08J9/0023C08J9/0028C08J9/0066C08J9/0095C08J9/04C08J9/141C08K3/22C08K3/26C08K3/34C08K5/06C08K5/136C08K5/34924C08J2201/03C08J2205/00C08J2325/06C08K2003/2296
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Quick Facts
Patent No.
US 9,422,410
App. No.
14/653,366
Granted
Aug 23, 2016
Kind
B2
Abstract

Provided is a recyclable flame-retardant foamed styrene resin composition having high flame-retardancy and heat stability by adding little bromine-containing flame retardant. A flame-retardant foamed styrene resin composition containing (A) a styrene resin, (B) a mixture of (B1) tetrabromobisphenol A-bis(2,3-dibromo-2-methylpropyl ether) and (B2) another bromine-containing flame retardant, (C) zinc-modified hydrotalcite, (D) zeolite, and (G) a foaming agent, containing 0.005-0.08 parts by weight of (C) the zinc-modified hydrotalcite per 100 parts by weight of (A) the styrene resin.

Claims (7)

1. A flame-retardant foamable styrene-based resin composition comprising (A) a styrene-based resin, (B) a mixture of (B1) tetrabromobisphenol A-bis(2,3-dibromo-2-methylpropyl ether) and (B2) a different bromine-containing flame retardant, (C) zinc-modified hydrotalcite, (D) zeolite, and (G) a foaming agent, wherein 0.005 to 0.08 parts by weight of the zinc-modified hydrotalcite (C) is contained per 100 parts by weight of the styrene-based resin (A).

2. The flame-retardant foamable styrene-based resin composition according to claim 1 , wherein the flame retardant (B2) is tetrabromobisphenol A-bis(2,3-dibromopropyl ether), tris(2,3-dibromopropyl) isocyanurate, tris(tribromophenoxy)triazine, or a brominated epoxy oligomer.

3. The flame-retardant foamable styrene-based resin composition according to claim 1 , wherein the ratio of the flame retardant (B1) to the flame retardant (B2) in the flame-retardant mixture is 3/97 to 60/40 on a weight basis.

4. A foam-molded article obtained by extrusion foaming the flame-retardant foamable styrene-based resin composition according to claim 1 .

5. The flame-retardant foamable styrene-based resin composition according to claim 2 , wherein the ratio of the flame retardant (B1) to the flame retardant (B2) in the flame-retardant mixture is 3/97 to 60/40 on a weight basis.

6. A foam-molded article obtained by extrusion foaming the flame-retardant foamable styrene-based resin composition according to claim 2 .

7. A foam-molded article obtained by extrusion foaming the flame-retardant foamable styrene-based resin composition according to claim 3 .

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 18, 2015
From: NISHIURA, MASAHITO; ONISHI, HIDEAKI; SEMORI, HISANORI; TOYOSHIMA, NAOMI
To: DAI-ICHI KOGYO SEIYAKU CO., LTD.
Reel/Frame 037145/0593 →
Priority Claims (1)
JP 2012-277419 · Dec 19, 2012 · national
Continuity (1)
Related Publication 20150344658A1 · Dec 3, 2015