POLYGLYKOL M 500

Polyglykol M 500
Polyglykol M 500 PU

Composition of Polyglykol M 500:
Monomethoxy polyethylene glycol
CH3 (OCH2 CH2 ) n OH

CAS-Nr.: 9004-74-4
INCI-designation: Methoxy PEG-10

Polyglykol M 500 is a linear, mono hydroxy-functional polyethylene glycol monomethyl ether (M-PEG) that is completely water soluble.
Polyglykol M 500 is suitable for paints and coatings.
Polyglykol M 500 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 500 is esterified with methacrylic acid to yield the corresponding polyglycol mono methacrylates, which are used for the polymerization of polycarboxylate super-plasticizers.

Benefits of Polyglykol M 500:
Polyglykol M 500 has a low diol content to limit formation of crosslinking diesters.
Polyglykol M 500 is completely water soluble.

PRODUCT FUNCTION of Polyglykol M 500:
Intermediate

APPLICATIONS of Polyglykol M 500:
Construction
Superplasticizer

Applications of Polyglykol M 500:
Polyglykol M 500 is a raw material for 3rd generation superplasticizers.

Product properties of Polyglykol M 500:
Polyglykol M 500 is a clear neutral liquid at room temperature. 
Polyglykol M 500 can be supplied in tank trucks or in steel drums. 

Polyglykol M 500 is soluble in water and common used organic solvents like Aceton, Methanol Polyglykol M 500 can be considered as high molecular alcohol and therefore displays typical chemical reactions of alcohols.
For special applications (polyurethanes) a product marked Polyglykol M 500 PU with low alkali content (< 10 mg/kg) is available. 

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

Product Type: Diols > Diols Polyethers
Chemical Composition: Polyethylene glycol monomethyl ether
CAS Number: 9004-74-4
Physical Form: Liquid
Appearance: Colorless
Product Status: COMMERCIAL

Polyglykol M 500 PU is a linear, mono hydroxy-functional polyethylene glycol monomethyl ether (M-PEG) that is completely water soluble. 
Polyglykol M 2000 FL is esterified with methacrylic acid to yield the corresponding polyglycol mono methacrylates which are used for the polymerization of polycarboxylate superplasticizers. 
Polyglykol M 500 PU is produced for polyurethane applications and offers low alkali and low water content.

Storage of Polyglykol M 500:
When stored in a cold, dry place in a closed container Polyglykol M 500 can be kept for at least two years.

Applications of Polyglykol M 500:
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:
water content (DIN 51777) % m/m:
max. 0.5

colour index [APHA] 10 % in water (EN 1557): 
max. 30

pH (5 % w/w in water) (DIN 19268): 
5 – 7
3 – 5 (M 500 PU)

hydroxyl number (HOE 06 HB 0211) mg KOH/g: 
106 – 119

molecular weight g/mol: 
470 – 530

pour point (ISO 3016) °C: 
about 12

density at 50°C (DIN 51562) g/cm³: 
1,072 – 1,076

refractive index at 20°C (DIN 51423, Part 2): 
1,460 – 1,462

viscosity at 50°C (DIN 51562) mm²/s: 
16 – 20 
17 – 21 (M 500 PU)