Лако-красочные материалы — производство

Conventional silicone resins have either alkoxy siloxane (-SiOR) or silanol (-SiOH) functional groups, which limits their application to certain specific curing chemistries. To expand their scope in coa­tings, modified silicone resins have been developed with functional groups suitable for conventional curing chemistries. For example, the — SiOH group of silicone resin, being acidic, does not react with isocyanate cross-linkers, and therefore it is modified with an alco­holic hydroxyl group (Si-CH2-CH2-OH) that can easily react with isocyanates. A few such representative examples of modified silico­nes are given in Figure 2.71.