| abstract |
The invention discloses a kind of phenyl organic silicon modified polyurethane resin and its preparation method and application, belongs to polyurethane resin field.Its structural formula is：Its preparation method is：First diphenyl silanediol is dissolved in after organic solvent, with chlorosilane (R 2 SiCH 3 Cl 2 ) the prepared hydroxy-end capped methyl phenyl silicone of reaction；In the presence of catalyst, hydroxy-end capped methyl phenyl silicone and silane compound are mixed, the methyl phenyl silicone of amino or imino group end-blocking is obtained；Then, in argon atmosphere, diisocyanate, amino or imino group is blocked into methyl phenyl silicone, Polyethylene Glycol or polyhydric alcohol and mixed solvent mixing, reaction, phenyl organic silicon modified polyurethane resin is obtained final product.Its advantage is：Water absorption is reduced, its hydrophobicity is improved；Improve the compatibility of organosilicon and polyurethane；Thin film of good performance can be made；Preparation method is simple. |