Quick Details

Synonyms:

Tetrabromobisphenol A bis(dibromopropyl ether);

Tetrabromobisphenol A bis(2,3-dibromopropyl) ether;

2,2-Bis[3,5-dibromo-4-(2,3-dibromopropoxy)phenyl]propane;

1,1'-(Isopropylidene)bis[3,5-dibromo-4-(2,3-dibromopropoxy)benzene]

Molecular structure:

Properties

Description

Flame retardant BDDP, also known as Tetrabromobisphenol A bis(dibromopropyl ether), is a new type of additive flame retardant. Appearance is white or light yellow powder, melting point 85-105 ° C, decomposition temperature is 270 ° C, insoluble in water and ethanol, soluble in benzene and acetone. Tetrabromobisphenol A bis(dibromopropyl ether) is the main product of deep processing of tetrabromobisphenol A, which has better flame retardancy. Tetrabromobisphenol A bis(dibromopropyl ether) contains aliphatic bromine and aromatic bromine in its molecular structure, has high flame retardancy, can withstand high processing temperatures, can be melt blended with polyolefins, and has appropriate thermal stability. Tetrabromobisphenol A bis(dibromopropyl ether) is widely used in polypropylene, polyethylene, polystyrene, polyvinyl chloride, polycarbonate, polyurethane flexible foam, epoxy resin and other plastics, especially for polystyrene.

Mechanism

Due to the low bond energy of CX of Tetrabromobisphenol A bis(dibromopropyl ether), its decomposition temperature is basically the same as the thermal decomposition temperature of the material. It absorbs a part of the heat during thermal decomposition and reduces the temperature. At the same time, the density of the hydrogen halide gas HX generated by the decomposition Larger than air, it can exhaust the air around the material and form an oxygen permeability barrier.

HX can also react with the polymer-decomposed free radical HO to generate halogen-based radical X-, and X- can react with the polymer chain to generate HX, which circulates, thereby cutting off the reaction between HO- and oxygen.

The presence of Tetrabromobisphenol A bis(dibromopropyl ether) weakens the van der Waals force between the polymer chains, making the material in a viscous flow state when heated, and the material at this time has fluidity, and can take away part of the flame and heat when heated. To achieve the effect of flame retardant.

Packaging

25kg/bag

Storage

Store in a dry, well-ventilated place away from direct sunlight.