CN-116829629-B - Flame retardant composition for styrene resin foam, flame retardant styrene resin foam composition, and extrusion molded foam thereof

Abstract

The invention provides a flame retardant composition for a foamed styrene resin, which can be used for manufacturing a foamed molded article having excellent flame retardance and heat resistance, a flame retardant foamed styrene resin composition and an extrusion foamed molded article thereof. The flame retardant composition for a foamed styrene resin of the present invention comprises at least a component (B1) tetrabromobisphenol A-bis (2, 3-dibromo-2-methylpropylether), a component (C) zinc fatty acid and a component (D) fatty acid metal salt, wherein the content of the component (C) per 100 parts by mass of the component (B1) is 0.1 to 15 parts by mass, and the content of the component (D) per 100 parts by mass of the component (B1) is 1 to 35 parts by mass.

Inventors

• SEN XIAJIAN
• AKIYAMA KOICHI
• Xing Yinhe

Assignees

• 第一工业制药株式会社

Dates

Publication Date

20260508

Application Date

20220114

Priority Date

20210204

Claims (5)

1. 1. A flame retardant composition for a foamed styrene resin, characterized in that, Comprises at least the following component (B1), component (C) and component (D), (B1) Tetrabromobisphenol A-bis (2, 3-dibromo-2-methylpropyl ether), (C) Fatty acid zinc (D) Fatty acid metal salts other than the component (C), In addition to the component (B1), component (B2) is contained as a flame retardant, The component (B2) is a bromine-containing flame retardant, The content of the component (C) is 0.1 to 15 parts by mass per 100 parts by mass of the component (B1), The content of the component (D) is 1 to 35 parts by mass per 100 parts by mass of the component (B1).
2. 2. A flame retardant composition for a foamed styrene resin according to claim 1, The component (B2) comprises at least one selected from the group consisting of tetrabromobisphenol a-bis (2, 3-dibromopropyl ether), tris (2, 3-dibromopropyl) isocyanurate, tris (tribromophenoxy) triazine, and brominated epoxy oligomer.
3. 3. A flame retardant composition for a foamed styrene resin according to claim 1 or 2, The content of the component (B1) is 10 to 99 mass% based on the total amount of the component (B1) and the component (B2).
4. 4. A flame retardant foamed styrenic resin composition characterized in that, A flame retardant composition for a foamed styrene resin comprising the composition according to any one of claims 1 to 3, and a styrene resin as component (A).
5. 5. An extrusion-molded foam of a flame-retardant, expandable styrene resin composition, characterized in that, The flame retardant foaming styrene resin composition is right the flame retardant foamed styrenic resin composition according to claim 4.

Description

Flame retardant composition for styrene resin foam, flame retardant styrene resin foam composition, and extrusion molded foam thereof Technical Field The present invention relates to a flame retardant composition for a foamed styrene resin, a flame retardant foamed styrene resin composition, and an extrusion-molded article thereof. Background Since the styrene-based resin foam is lightweight, it is widely used in various fields, for example, in addition to heat insulation applications for home electric appliances, building materials, etc., civil engineering applications such as a method of embankment construction, etc. The styrene resin is formed only from carbon and hydrogen, and therefore has a property of generating black smoke and burning vigorously upon ignition. Therefore, it is necessary to flame-retardant the resin with a flame retardant according to the use of the styrene resin foam. Conventionally, it has been known that in flame retarding of a styrene resin foam by an extrusion method, hexabromocyclododecane (HBCD) is used as a flame retardant to obtain a desired flame retarding effect with a small amount of use. On the other hand, HBCD has low thermal stability, and when a resin composition containing HBCD is heated to a temperature equal to or higher than the melting temperature, HBr produced by decomposition of HBCD may color the resin and deteriorate the quality, and may cause a problem of promoting corrosion of manufacturing equipment and the like. In addition, the waste material of the foam and the waste material produced in the production of the foam are desirably recycled as a raw material for producing a new foam, and when a flame retardant having low thermal stability such as HBCD is contained in the waste material, coloring occurs in melting the waste material or depolymerization is promoted. Therefore, the foam containing HBCD has a problem that it is difficult to recover. From this point of view, it has recently been studied to use other brominated flame retardants for extrusion foaming of styrene resin foams instead of HBCD. As such a brominated flame retardant, tetrabromobisphenol a-bis (2, 3-dibromo-2-methylpropylether) is proposed. The flame retardant has a flame retardant effect comparable to that of HBCD, but in order to further improve the thermal stability, it has also been proposed to use other flame retardants in combination, for example, tetrabromobisphenol a-bis (2, 3-dibromopropyl ether), tris (2, 3-dibromopropyl) isocyanurate, and the like. Accordingly, the decomposition of the flame retardant is suppressed while maintaining an excellent flame retardant effect, and the deterioration of the resin is not easily caused (for example, refer to patent documents 1 to 3). Prior art literature Patent literature Patent document 1 Japanese patent laid-open publication No. 2010-275528 Patent document 2 Japanese patent application laid-open No. 2012-107227 Patent document 3 Japanese patent application laid-open No. 2012-136674 Disclosure of Invention Technical problem to be solved by the invention However, since flame retardancy and heat resistance are in a trade-off relationship, it is difficult to improve both properties at the same time, and in recent years, in various applications using a styrene-based foam molded article, it is required to further improve both flame retardancy and heat resistance of the foam. From the above viewpoints, it is urgent to develop a flame retardant for further improving the flame retardancy and heat resistance of a foam or to develop a resin composition for producing a styrene resin foam. The present invention has been made in view of the above circumstances, and an object thereof is to provide a flame retardant composition for a foamed styrene resin, a flame retardant foamed styrene resin composition, and an extrusion-molded article thereof, which can be used for producing a foamed molded article having excellent flame retardancy and heat resistance. Means for solving the problems The present inventors have repeatedly studied in order to achieve the above object, and as a result, have found that the above object can be achieved by combining a specific flame retardant, zinc fatty acid and a metal salt of the fatty acid, and have completed the present invention. That is, the present invention includes, for example, the subject matter described in the following. Item 1 A flame retardant composition for a foaming styrene resin, comprising at least the following component (B1), component (C) and component (D), (B1) Tetrabromobisphenol A-bis (2, 3-dibromo-2-methylpropyl ether), (C) Fatty acid zinc (D) Fatty acid metal salts (except for the component (C)), The content of the component (C) is 0.1 to 15 parts by mass per 100 parts by mass of the component (B1), The content of the component (D) is 1 to 35 parts by mass per 100 parts by mass of the component (B1). Item 2 The flame retardant composition for a foamed styrene resin according to claim 1, wherein