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Merck
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Key Documents

427888

Sigma-Aldrich

Polypropylene

Isotactic, average Mw ~250,000, average Mn ~67,000

Sinonimo/i:

PP, polypropene

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About This Item

Formula condensata:
[CH2CH(CH3)]n
Numero CAS:
Numero MDL:
Codice UNSPSC:
12162002
ID PubChem:
NACRES:
NA.23

Livello qualitativo

Forma fisica

beads

Indice di fluidità

12 g/10 min (230°C/2.16kg)

PM

average Mn ~67,000
average Mw ~250,000

Durezza

100 (Rockwell R, ASTM D 785-A)

Temp. transizione

Tm 160-165 °C

Densità

0.9 g/mL at 25 °C (lit.)

applicazioni

battery manufacturing

Stringa SMILE

CC=C

InChI

1S/C22H42O3/c1-2-3-4-5-11-14-17-20-21(25-20)18-15-12-9-7-6-8-10-13-16-19-22(23)24/h20-21H,2-19H2,1H3,(H,23,24)/t20-,21+/m1/s1
NSYDMBURIUSUDH-RTWAWAEBSA-N

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Applicazioni

Used with ram- and screw-injection machines. For automotive, housewares, general molding products and multi- and monofiliment fiber.

Caratteristiche e vantaggi

High stiffness and resistance to solvents and chemicals. Resistant to environmental stress cracking. More prone to oxidation than polyethylene.

Codice della classe di stoccaggio

11 - Combustible Solids

Classe di pericolosità dell'acqua (WGK)

WGK 3

Punto d’infiammabilità (°F)

Not applicable

Punto d’infiammabilità (°C)

Not applicable

Dispositivi di protezione individuale

Eyeshields, Gloves, type N95 (US)


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F Cassiola et al.
Artificial organs, 24(3), 168-173 (2000-04-12)
The introduction of microporous polypropylene hollow fibers in recent years has brought considerable advances to blood oxygenators. However, lifetime and assembly problems are still unresolved. In this work we tried to rate the oxygen permeation velocity by turning the fibers
[Procedure for membrane oxygenation of blood over hydrophilic polymer membranes].
H Körber et al.
Biomedizinische Technik. Biomedical engineering, 43 Suppl, 338-340 (1998-12-22)
Simon J Gallagher et al.
Journal of drug targeting, 11(6), 373-379 (2003-12-12)
The aim of this study was to test the hypothesis that the most appropriate model for studying the diffusional release of an active from a topical formulation is one in which the membrane offers minimal resistance to release and involves
G Imanidis et al.
European journal of pharmaceutics and biopharmaceutics : official journal of Arbeitsgemeinschaft fur Pharmazeutische Verfahrenstechnik e.V, 47(3), 283-287 (1999-06-26)
The possibility to control the release rate of salbutamol through the hydrophobic Celgard 2500 polypropylene membrane by varying the composition and the viscosity of hydrophilic drug vehicles was investigated. The use of the polypropylene membrane as a control membrane for
P K Amid et al.
Journal of biomedical materials research, 28(3), 373-375 (1994-03-01)
This preliminary study examined the possibility of preventing intestinal adhesions to biomaterials while preserving their incorporation with the abdominal wall. White New Zealand rabbits received intraperitoneal implants of different biomaterials for repair of defects created on the abdominal wall. The

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