Web以异佛尔酮二异氰酸酯(ipdi)、聚醚(n-220)等为主要原料,通过在后扩链中加入不同比例的小分子氨基硅油而合成一系列稳定的氨基硅油改性水性聚氨酯乳液。经测试研究表明,氨基硅油的加入可以显著提高水性聚氨酯的耐水性能,对于力学性能没有太大影响。 Web4 dec. 2008 · Isocyanate Polymer Having Stated Hydrophilic Or Hydrophobic Property Patents (Class 528/904) Aqueous polyurethane resin, hydrophilic resin, and film Patent …
Hexamethylene Diisocyanate (HDI) Toxic Substances Toxic …
WebThey are water-soluble associative polymers consisting of a hydrophilic backbone and hydrophobic terminal groups. (3−5) Typical HEURs are oligomeric molecules with a hydrophilic core based on poly (ethylene glycol) (PEG) with a molar mass in a range of 6,000–35,000 g·mol –1 and short hydrophobic terminal chains. (3,6) Hydrophobes most … Web• Oversaw development of isocyanate prepolymers and polyol formulations for polyurethane and polyurea products. • Developed spray elastomer formulations for high renewable content, low hardness,... bws willow glen
Easaqua™ range : Hydrophilic isocyanates for waterborne PU
Isocyanates can present respiratory hazards as particulates, vapors or aerosols. Autobody shop workers are a very commonly examined population for isocyanate exposure as they are repeatedly exposed when spray painting automobiles and can be exposed when installing truck bed liners. Meer weergeven In organic chemistry, isocyanate is the functional group with the formula R−N=C=O. Organic compounds that contain an isocyanate group are referred to as isocyanates. An organic compound with two … Meer weergeven Isocyanates are usually produced from amines by phosgenation, i.e. treating with phosgene: These … Meer weergeven The global market for diisocyanates in the year 2000 was 4.4 million tonnes, of which 61.3% was methylene diphenyl diisocyanate (MDI), 34.1% was toluene diisocyanate (TDI), … Meer weergeven • Isothiocyanate • Polymethylene polyphenylene isocyanate Meer weergeven In terms of bonding, isocyanates are closely related to carbon dioxide (CO2) and carbodiimides (C(NR)2). The C−N=C=O unit that defines isocyanates is planar, and … Meer weergeven With nucleophiles Isocyanates are electrophiles, and as such they are reactive toward a variety of nucleophiles including alcohols, amines, and even … Meer weergeven The risks of isocyanates was brought to the world's attention with the Bhopal disaster, which caused the death of nearly 4000 people … Meer weergeven WebIsocyanate, hydrophilic / Isocyanate, hydrophobic 1:1 (80% in MPA) 22.95 Total 100.00 4 Dispersion of AEROSIL® Coating formulators can incorporate both hydrophilic and hydrophobic AEROSIL® without difficulty into water-based coatings by using the appropriate dispersion equipment (e. g. a bead or ball mill). Web30 ratio of isocyanate units to hydroxyl units is about 1.2 to 3.0, more preferably is about 1.5 to 2.5. Preferably, the fluorinated. polyol has a glass transition temperature of from 10°C to 80°C. [0008] The substrates to be coated can be any surfaces that needs protection, including concrete, wood, metal. cff donations