Product

POLY(STYRENE-CO-ALPHA-METHYLSTYRENE)

CAS No.：9011-11-4

Other grades of this product :

POLY(STYRENE-CO-ALPHA-METHYLSTYRENE) Basic information

Product Name:	POLY(STYRENE-CO-ALPHA-METHYLSTYRENE)
Synonyms:	POLY(STYRENE-CO-ALPHA-METHYLSTYRENE);POLY(STYRENE-CO-ALPHA-METHYLSTYRENE), SO FTENING POINT 100 DEG. C;POLY(STYRENE-CO-ALPHA-METHYLSTYRENE), SO FTENING POINT 119 DEG. C;Styrene-α-methylstyrene polymer;poly(styrene-co-α-methylstyrene);Ethenylbenzene,copolymerwith(1-methylethenyl)benzene,(.alpha.-Methylstyrene-styrene)copolymer;ethenyl-benzenpolymerwith(1-methylethenyl)benzene;Styrol, a-methylstyrol, copolymer
CAS:	9011-11-4
MF:	C17H18
MW:	222.32482
EINECS:
Product Categories:	Hydrophobic Polymers;Materials Science;Hydrophobic Polymers;Styrene copolymers;Polymer Science;Styrene copolymers;Polymers;Styrenes
Mol File:	9011-11-4.mol

POLY(STYRENE-CO-ALPHA-METHYLSTYRENE) Chemical Properties

Melting point	171-188 °C
density	1.07 g/mL at 25 °C
solubility	hydrocarbons, esters and ketones: soluble
EPA Substance Registry System	Benzene, ethenyl-, polymer with (1-methylethenyl)benzene (9011-11-4)

Safety Information

WGK Germany

MSDS Information

Provider	Language
SigmaAldrich	English

POLY(STYRENE-CO-ALPHA-METHYLSTYRENE) Usage And Synthesis

Uses

Additive to sealants, caulks, adhesives, and coatings.

Preparation

a-Methylstyrene is obtained from benzene and propylene by the following route:a-Methylstyrene is not readily polymerized by free radical initiators but it is susceptible to cationic polymerization. Polymerization can be effected, for example, in ethyl chloride at -130°C with aluminium chloride but poly(a-methylstyrene) prepared in this manner is a clear brittle solid which has little commercial application. Polymers with much lower molecular weight (300-600) obtained by using alkaline earth catalysts, however, are viscous liquids and have found some use as plasticizers in surface coatings and adhesives. Styrene-a-methylstyrene copolymers are marketed for extrusion and injection moulding. Compared to polystyrene, these copolymers have the advantage of higher softening points (104-106°C); they too are transparent and colourless.

POLY(STYRENE-CO-ALPHA-METHYLSTYRENE) Preparation Products And Raw materials

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