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190993

Sigma-Aldrich

Poly(4-methyl-1-pentene)

medium molecular weight

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About This Item

Linear Formula:
(CH2CH[CH2CH(CH3)2])n
CAS Number:
25068-26-2
MDL number:
MFCD00084382
UNSPSC Code:
12162002
PubChem Substance ID:
24851464
NACRES:
NA.23

form

solid

melt index

26 g/10 min (260°C/5kg)

impact strength

3 kg.cm/cm2 (Izod, ASTM D 256)

dielectric constant

2.12, 100 MHz (ASTM D 150)

hardness

80 (Rockwell R, ASTM D 758)

refractive index

n20/D 1.463

mp

235 °C

transition temp

softening point 178 °C (Vicat, ASTM D 1525)

density

0.835 g/mL at 25 °C

SMILES string

CC(C)CC=C

InChI

1S/C6H12/c1-4-5-6(2)3/h4,6H,1,5H2,2-3H3

InChI key

WSSSPWUEQFSQQG-UHFFFAOYSA-N

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Application

Coating 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.

Features and Benefits

Very low specific gravity, high transparency, resistant to oxidation and prone to stress cracking. Good electrical insulator.

Physical form

Crystalline, isotactic.

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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LaNetra M Clayton et al.
Journal of nanoscience and nanotechnology, 6(8), 2520-2524 (2006-10-14)
Poly(4-methyl-1-pentene), PMP, a high melting polymer composed of hydrogen and carbon, has the potential to become an alternative to polyethylene (PE) as shielding material against Galactic Cosmic Radiation (GCR). PMP exhibits higher thermal stability than PE and is transparent in
Ayano Chiba et al.
Physical review. E, Statistical, nonlinear, and soft matter physics, 85(2 Pt 1), 021807-021807 (2012-04-03)
High-pressure in situ x-ray diffraction and specific-volume measurements on isotactic poly(4-methyl-1-pentene) melt have uncovered abrupt changes in the pressure dependence of microscopic structure as well as that of macroscopic density. The first sharp diffraction peak of the polymer melt, which
Sang-Chul Shin et al.
International journal of pharmaceutics, 235(1-2), 141-147 (2002-03-07)
Triprolidine-containing matrix was fabricated with poly(4-methyl-1-pentene) (TPX) polymer to control the release of the drug. Effect of penetration enhancer and stripping of skin on the permeation of triprolidine through the excised mouse skin was studied. Penetrating enhancers showed the increased
C Prasser et al.
European journal of anaesthesiology, 25(2), 152-157 (2007-07-28)
It has been demonstrated that volatile anaesthetics have cardioprotective properties during open-heart procedures, especially when administered continuously. European Council Directive 93/42/EEC concerning medical devices bans the supplementary incorporation of anaesthetic vaporizers in the bypass circuit. Since the uptake of volatile
G H Hsiue et al.
Biomaterials, 15(3), 163-171 (1994-02-01)
A poly(2-hydroxyethyl methacrylate) (pHEMA)-grafted polymer film was prepared by plasma-induced graft copolymerization onto an elastic material, silicone rubber, and a plastic material, poly(4-methyl-1-pentene) (TPX). The control, Ar plasma-treated and pHEMA-grafted silicone rubber and TPX surfaces were characterized by ESCA, FTIR-ATR
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