POLY(STYRENE-CO-ALPHA-METHYLSTYRENE)
Synonym(s):α-Methylstyrene-styrene;α-Methylstyrene-styrene polymer;Styrene-α-methylstyrene copolymer;Styrene-α-methylstyrene resin
- CAS NO.：9011-11-4
- Empirical Formula: (C9H10.C8H8)x
- Molecular Weight: 222.33
- MDL number: MFCD00284291
- Update Date: 2026-01-13 11:27:06
What is POLY(STYRENE-CO-ALPHA-METHYLSTYRENE)?
The Uses of POLY(STYRENE-CO-ALPHA-METHYLSTYRENE)
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.
Properties of POLY(STYRENE-CO-ALPHA-METHYLSTYRENE)
| 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 for POLY(STYRENE-CO-ALPHA-METHYLSTYRENE)
Computed Descriptors for POLY(STYRENE-CO-ALPHA-METHYLSTYRENE)
New Products
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