Function: emulsified silicone oil, emulsifier for hair conditioner, fiber softener and antistatic agent
Appearance: white or light yellow solid
Molecular formula: C16H33(CH3)3NCl
Molecular weight: 328.42
Active matter content: 70%
HEUR Hydrophobically Modified Urethane Ether Hydrophobically modified urethane ether is commonly referred to as a polyurethane thickener. Undoubtedly, this is the earliest synthetic associative thickener, used in leather processing and textile printing pastes in the early 1960s. As water-based coatings gradually replace solvent-based coatings, HEUR is widely used in water-based decorative paints, industrial paints, and two-component water-based polyurethane systems that have emerged in recent years . It is usually connected to a hydrophobic block micronized ptfe density by a hydrophilic polyethylene glycol substance through a urethane or diurethane group.
The hydrophobic group can be placed on the two ends of the molecule, or it can be block in the main block. Chain or side chain
HEUR thickeners are widely used in water-based paints and coatings. They can be used in gloss paints and low-gloss paints; they can be used in color paints and varnishes, such as wood floor paint, printing ink, Wood adhesives, label adhesives, wallpaper adhesives and even protective adhesives in emulsion polymerization . The chemical structure of a typical linear hydrophobically modified urethane ether.
H2sCi 2-O[CO-NH-CHe-NH-CO-O-(CH 2–CH 2-O一) 163] 4
-CO-NH-Cr He-NH-CO-O-C12H 25
HMP E hydrophobically modified polyether hydrophobically modified polyether can become an important concept including HEUR. The hydrophobic group of HEUR is connected to the hydrophilic main chain through the urethane group, but the hydrophobically modified polyether (HMPE) is replaced by an ether (in theory, an ester group). Rheological properties are affected by surfactants, namely alkyl polyethylene glycol oxides (L40), and it is feasible to modify associative surfactant polymers with polyethylene glycol. This reaction can be accomplished by the copolymerization of long-chain epoxides , or alkyl chlorides, or alkyl epoxides and ethylene oxides.
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