ChemicalBook Product Catalog Catalyst and Auxiliary polymer POLY(4-METHYL-1-PENTENE)

POLY(4-METHYL-1-PENTENE)

POLY(4-METHYL-1-PENTENE) Basic information
Product Name:POLY(4-METHYL-1-PENTENE)
Synonyms:POLY(4-METHYL-1-PENTENE);POLY(4-METHYLPENTENE-1)(ATACTIC);4-methyl-1-pentenhomopolymer;4-METHYL-1-PENTENE POLYMER ATACTIC;POLY(4-METHYL-1-PENTENE), MEDIUM MOLECUL AR WEIGHT;POLY(4-METHYL-1-PENTENE) HIGH &;POLY(4-METHYL-1-PENTENE), LOW MOLECULAR WEIGHT, MELT INDEX 180;Poly(4-methyl-1-pentene), high molecular weight
CAS:25068-26-2
MF:C6H12
MW:84.15948
EINECS:
Product Categories:Butene and Higher;Hydrophobic Polymers;Materials Science;Polymer Science;Polymers;Butene and Higher;Hydrophobic Polymers;Olefins
Mol File:25068-26-2.mol
POLY(4-METHYL-1-PENTENE) Structure
POLY(4-METHYL-1-PENTENE) Chemical Properties
Melting point 240 °C
Boiling point 0.83 °C
density 0.835 g/mL at 25 °C
refractive index n20/D 1.463
form Beads
color Clear
CAS DataBase Reference25068-26-2
EPA Substance Registry System1-Pentene, 4-methyl-, homopolymer (25068-26-2)
Safety Information
Safety Statements 24/25
WGK Germany 3
HS Code 39029090
MSDS Information
ProviderLanguage
ACROS English
SigmaAldrich English
POLY(4-METHYL-1-PENTENE) Usage And Synthesis
Chemical Propertiesoff-white beads
Chemical PropertiesPoly(4-methyl-1-pentene) was first introduced in 1965 by Imperial Chemical Industries Ltd (UK) but since 1975 the polymer has been manufactured solely by Mitsui Petrochemical Industries Ltd. Polymerization is carried out using a Ziegler-Natta catalyst such as titanium trichloride/diethylaluminium chloride in a hydrocarbon diluent at atmospheric pressure and 30-60°C:
Polymerization
The commercial material contains a comonomer, possibly 1-hexene, which enhances clarity. The polymer configuration is predominantly isotactic. Generally, this material has the basic physical properties to be expected from a crystalline polyolefin but in some respects it offers significant improvements over other polyolefins. One outstanding property of poly(4-methyl-l-pentene) is the very low specific gravity, which at 0.83 is the lowest of current polymers. The crystalline melting point is 240°C and the Vicat softening temperature is 179°C; these high values mean that a useful form stability is maintained up to about 200°C. The transparency of the polymer is of a high order, being comparable to poly(methyl methacrylate) and polystyrene. Poly(4-methyl-l-pentene) exhibits resistance to oxidizing and other chemical environments broadly similar to that shown by polypropylene; however, poly(4-methyl-l-pentene) does undergo environmental stress cracking comparable to low density polyethylene. The permeability of poly(4-methyl-I-pentene) to gases and water vapour is considerably higher than that for other polyolefins. Poly(4-methyl-l-pentene) may be extruded and injection moulded using standard equipment. The material has been used in several applications where transparency and heat resistance are required, e.g. medical and laboratory ware.
UsesCoating for paper food containers for microwave and conventional ovens. Release coatings for food and synthetic leather. Molded into medical labware. Film for decorative laminates and printed circuit boards.
POLY(4-METHYL-1-PENTENE) Preparation Products And Raw materials
POLY(4-VINYLPYRIDINE) POLY(4-METHYL STYRENE) Aluminum acetylacetonate TRIS(2,2,6,6-TETRAMETHYL-3,5-HEPTANEDIONATO)EUROPIUM(III) N-BUTYLISOCYANIDE Tris(2,4-pentanedionato)chroMiuM(III) DICHLORO(ETHYLENEDIAMINE)PLATINUM(II) SALCOMINE 2,4-PENTANEDIONE, SILVER DERIVATIVE Tosylmethyl isocyanide poly(4-methyl-1-pentene-1)(TPX) COBALT(II) ACETYLACETONATE Cupric acetylacetonate Ethyl isocyanoacetate TERT-BUTYL ISOCYANIDE Ferric acetylacetonate COBALT ETHYLENE DIAMINE CHLORIDE TRIS(2,2,6,6-TETRAMETHYL-3,5-HEPTANEDIONATO)DYSPROSIUM(III)
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