POLYGLYKOL M 350

Polyglykol M 350
Polyglykol M 350 PU

Composition of Polyglykol M 350:
Monomethoxy polyethylene glycol
CH3(OCH2CH2)nOH

CAS Number: 9004-74-4

INCI-designation: Methoxy PEG-7

Polyglykol M 350 is a linear, mono hydroxy-functional polyethylene glycol monomethyl ether (M-PEG) that is completely water soluble. 
Polyglykol M 350 is esterified with methacrylic acid to yield the corresponding polyglycol mono methacrylates which are used for the polymerization of polycarboxylate superplasticizers.

Polyglykol M 350 is a linear, mono hydroxy-functional polyethylene glycol monomethyl ether (M-PEG). 
Polyglykol M 350 has low diol content to limit formation of crosslinking diesters. 

When reacted with unsaturated monomers like acrylic or methacrylic acid, esters are formed which can be copolymerized in order to increase hydrophilicity and improves dispersing properties of polymers in water. 
Polyglykol M 350 is esterified with methacrylic acid to yield the corresponding polyglycol mono methacrylates which are used for the polymerization of polycarboxylate superplasticizers.

Polyglykol M 350 is a linear, mono hydroxy-functional, polyethylene glycol monomethyl ether. 
Polyglykol M 350 possesses low content of diol contaminants. 
Polyglykol M 350 is used in paints and coatings.

Benefits of Polyglykol M 350:
Polyglykol M 350 has a low diol content to limit formation of crosslinking diesters.
Polyglykol M 350 is completely water soluble.

PRODUCT FUNCTION:
Intermediate

Molar mass [g/mol]:    
330-370

Diol - concentration [area % HPLC]:     
< 0.5

Hydroxyl value (DIN 53240) [mg KOH/g]:    
152-168

Solidification point EP III °C:    
Approx. -6

Viscosity at 50°C [mm2/s]:
9-11

pH at 5%:
5.0-7.0

Polyglykol M 350 is a monomethoxy polyethylene glycol with a molecular weight of 330 – 370g/mol. It is a clear neutral liquid at room temperature. 
Polyglykol M 350 can be supplied in tank trucks or in steel drums. 
Polyglykol M 350 can be considered as high molecular alcohol and therefore displays typical chemical reactions of alcohols.

M-type polyglycols are used for a wide variety of chemical reactions. 
With isocyanates and polyester they act as endcapping and hydrophilic component. 

When reacted with unsaturated monomers like acrylic or methacrylic acid esters are formed which can be copolymerisized in order to increase hydrophilicity and improve dispersing properties of polymers in water.
Polyglykol M 350 is also available as Polyglykol M 350 Terra, providing the same performance as its conventional counterpart and benefiting from a REDCert2 and ISCC Plus certified supply chain ensuring the use of biobased or renewable raw materials resulting in a significantly reduced carbon footprint and an RCI 91.3%.

Applications of Polyglykol M 350:
Polyglykol M 350 is the raw material for 3rd generation superplasticizers.
Polyglykol M 350 is also used as a chemical intermediate for paint additives.

PRODUCT FUNCTION:
Intermediate & process aid

CHEMICAL TYPE:
Polyethylene glycol

APPLICATIONS:
Chemical synthesis
Plastic & elastomer synthesis

Product properties of Polyglykol M 350:
Polyglykol M 350 is a clear neutral liquid at room temperature. 
Polyglykol M 350 can be supplied in tank trucks or in steel drums. 

Polyglykol M 350 is soluble in water and common used organic solvents like Aceton, Methanol Polyglykol M 350 can be considered as high molecular alcohol and therefore displays typical chemical reactions of alcohols.
For special applications (polyurethanes) a product marked Polyglykol M 350 PU with low alkali content (< 10 mg/kg) and low water content (< 0,1 %) is available. 

The pH-value of this special type is between 3 –5. 
The other product data are simulare the standard.

Storage of Polyglykol M 350:
When stored in a cold, dry place in a closed container Polyglykol M 350 can be kept for at least two years.

Applications of Polyglykol M 350:
M-type polyglycols are used for a wide variety of chemical reactions. 
With isocyanates and polyester they act as endcapping and hydrophilic component. 

When reacted with unsaturated monomers like acrylic or methacrylic acid esters are formed which can be copolymerisized in order to increase hydrophilicity and improve dispersing properties of polymers in water.
In the USA some M-type polyglycols are used for pharmaceutical applications.

Product data of Polyglykol M 350:
water content (DIN 51777) / % m/m / max. 0.5 - max. 0.1 (M 350 PU)
colour index [APHA] 10 % in water (EN 1557) / max. 30
pH (5 % w/w in water) (DIN 19268) / 5 – 7 - 3 – 5 (M 350 PU)
hydroxyl number (DIN 53240) / mg KOH/g / 152 – 168
molecular weight / g/mol  / 330 – 370
pour point (ISO 3016) / °C / about - 6
density at 20°C (DIN 51562) / g/cm³ / 1.08 – 1.10
refractive index at 20°C (DIN 51423, Part 2) / 1.456 – 1.458
viscosity at 50°C (DIN 51562) / mm²/s / 9 – 11