Монометакрилат полипропиленгликоля

Description

Polypropylene glycol monomethacrylate is a monofunctional methacrylate monomer with a polyester chain. The molecule carries one polymerizable methacrylate group, an oxypropylene block and a free hydroxyl group at the opposite end. The combination of low viscosity and low intrinsic color makes the product a convenient active diluent in radically curing compositions, and the presence of hydroxyl makes it possible for subsequent modification, for example, urethanization with isocyanate. Brands differ in the length of the oxypropylene chain, which is reflected in the numbers: Blemmer PP 300, PP 400, PP 500, PP 550, PP 800, PP 1000; series Bisomer PPM 5, PPM 5S, PPM 5LI, PPM 5HI, PPM 6, PPM 6E; SR 604.

Basic Attributes

• CAS No.: 39420-45-6
• Chemical formula: (C3H6O)nC4H6O2
• Exact weight: 144.078644
• XLogP3: 0.85
• Systematic name: poly[oxy(methyl-1,2-ethanediyl)], α-(2-methyl-1-oxo-2-propen-1-yl)-ω-hydroxy-

Physico-chemical characteristics

• Density: 1.0 ± 0.1 g/cm³
• Boiling point: 218.8 ± 23.0 °C at 760 mm Hg. Art.
• Flash point: above 230°F
• Refractive index: 1.444
• Viscosity: low; the product is slightly colored

Scope of application

• active diluent for ultraviolet and radically curing compositions: reduces the viscosity of the system and, during curing, is built into the mesh and does not evaporate
• comonomer and macromonomer in radical copolymerization: the polyester fragment introduces a flexible lateral gain into the chain, which reduces rigidity and increases the compatibility of the copolymer with aqueous and polar environments
• water dispersions for inkjet printing
• dental compositions and polymer compositions with reactive fillers
• radical-curing coatings, varnishes and adhesives

Safety Information

• Hazard statements: H315, H319, H335 - skin irritation, serious eye irritation, respiratory tract irritation
• Precautions: P261, P305+P351+P338
• Transport codes: NONH for all modes of transport
• WGK Germany: 3
• Hazard class code: 36/37/38
• Safety instructions: 26-36
• Tags: Xi

Storage and handling

The product is a methacrylate monomer capable of spontaneous polymerization, therefore commercial batches contain an inhibitor. The inhibitor is not removed from the product, the container is not completely filled and is not sealed without taking into account the requirements of the supplier: most phenolic inhibitors work only in the presence of dissolved oxygen. Store in a cool, dark place, away from heat sources, initiators and peroxides. When working, use gloves and safety glasses, and provide exhaust ventilation.