FM-4421 | Reactive PDMS - Bi terminal Hydroxy

Harmonization Code : 3910.00.00.60 |  
Main features
  • Bi terminal
  • 5,000 g/mol | 110 mPas
  • Hydroxy functional groups

Product Description

Silaplane® FM-4421 is a reactive polydimethylsiloxane (PDMS) based polymer with a molecular weight of 5,000 g/mol and a Viscosity of 100 - 125 mPas. This reactive silicone material offers the addition of silicone-type properties to non-Silicone materials in a variety of industries including electronics, semiconductors, automotive, biotech, healthcare, and clean energy applications. It offers narrow polydispersity and a low level of chemical impurities.

Silaplane® FM-4421 bi-terminal product has two Hydroxy functional groups that are reactive toward a variety of compounds and surfaces enabling chemical and physical changes to chemicals, particle surfaces and larger surface structures. Hydroxy groups are mainly reactive with urethane and ester compounds.

Product Family
200 liters

Catalog Product

Unlike other products we offer, the products listed on this page cannot currently be ordered directly from the website.

Technical Specifications

General Properties
Molecular weight 5000 g/mol
Specific Gravity
Specific Gravity
Specific gravity (SG) is the ratio of the density of a substance to the density of a reference substance; equivalently, it is the ratio of the mass of a substance to the mass of a reference substance for the same given volume.

For liquids, the reference substance is almost always water (1), while for gases, it is air (1.18) at room temperature. Specific gravity is unitless.
Physical Properties
Viscosity is a measurement of a fluid’s resistance to flow.

Viscosity is commonly measured in centiPoise (cP). One cP is defined as
the viscosity of water and all other viscosities are derived from this base. MPa is another common unit with a 1:1 conversion to cP.

A product like honey would have a much higher viscosity -around 10,000 cPs-
compared to water. As a result, honey would flow much slower out of a tipped glass than
water would.

The viscosity of a material can be decreased with an increase in temperature in
order to better suit an application
110 mPa.s