manufacture of styrene-acrylonitrile copolymers

Short Description:

Styrene is primarily a synthetic chemical. It is also known as vinylbenzene, ethenylbenzene, cinnamene, or phenylethylene. It’s a colorless liquid that evaporates easily and has a sweet smell. It often contains other chemicals that give it a sharp, unpleasant smell. It dissolves in some liquids but doesn’t dissolve easily in water.

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Product Detail

Product Tags

manufacture of styrene-acrylonitrile copolymers,
San Plastic Raw Material, SAN prodiction, SAN Raw Material,

The process comprises: (a) the introduction, into a reactor, [lacuna] a reaction mixture comprising all the water, acrylonitrile, initiator or initiators, chain-transfer agent or agents and suspending agent or agents and optionally a predetermined fraction of the total amount of the styrene; (b) stirring the reaction mixture and increasing the temperature of this reaction mixture to 60 °C and then to 120 °C; (c) when the temperature of the reaction mixture has reached 60 °C or 120 °C, the addition of the remaining amount of styrene, so as to keep constant the styrene monomer/acrylonitrile monomer ratio in the reaction mixture throughout the duration of the addition; (d) raising the temperature of the reaction mixture to 140 °C and the maintenance at this temperature for a sufficient duration to bring the copolymerization to completion; and (e) cooling the reaction mixture and the recovery of the styrene/acrylonitrile copolymer. Application to the manufacture of SAN copolymers having a level of acrylonitrile of at least 40 % by weight.

Product Features

CAS Number	100-42-5
EINECS No.	202-851-5
H.S. Code	2902.50
Chemical formula	H2C=C6H5CH
Chemical Properties
Melting point	-30-31 C
Boling point	145-146 C
Specific gravity	0.91
Solubility in water	< 1%
Vapour density	3.60

Synonyms

Cinnamene; Cinnamenol; Diarex HF 77; Ethenylbenzene; NCI-C02200;Phenethylene; Phenylethene; Phenylethylene; Phenylethylene, inhibited; Stirolo(Italian); Styreen (Dutch); Styrene (CZECH); Styrene Monomer (ACGIH); StyreneMonomer, Stabilized (DOT); Styrol (German); Styrole; Styrolene; Styron; Styropor; Vinylbenzen (CZECH); Vinylbenzene; Vinylbenzol.

Certificate of Analysis

Property	Data	Unit
Bases	A level≥99.5%;B level≥99.0%.	-
Appearance	colorless transparent oily liquid	-
Melting point	-30.6	℃
Boiling point	146	℃
Relative density	0.91	Water=1
Relative vapor density	3.6	Air=1
Saturated vapor pressure	1.33(30.8℃)	kPa
Heat of combustion	4376.9	kJ/mol
Critical temperature	369	℃
Critical pressure	3.81	MPa
Octanol/water partition coefficients	3.2	-
Flash point	34.4	℃
Ignition temperature	490	℃
Upper explosive limit	6.1	%(V/V)
Lower explosive limit	1.1	%(V/V)
Solubleness	Insoluble in water, soluble in alcoho and most organic solvents.
Main application	Used for manufacturing polystyrene, synthetic rubber, ion-exchange resin ,etc.

Package and Delivery

Packaging Detai: Packed in 220kg/drum,17 600kgs/20’GP

ISO TANK 21.5MT

1000kg/drum, Flexibag, ISO tanks or according to customer`s request.

1658370433936
1658370474054
Package (2)
Package

Product Application

Used in the manufacture of rubbers, plastics, and polymers.

a) Production of: expandable polystyrene (EPS);

b) Production of polystyrene (HIPS) and GPPS;

c) Production of styrenic co-polymers;

d) Production of unsaturated polyester resins;

e) Production of styrene-butadiene rubber;

f) Production of styrene-butadiene latex;

g) Production of styrene isoprene co-polymers;

h) Production of styrene based polymeric dispersions;

i) Production of filled polyols. Styrene is mainly used as a monomer for the manufacture of polymers (such as polystyrene, or certain rubber and latex)

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