PDS 1615 Silanol terminated diphenylsiloxane-dimethylsiloxane copolymer 68083-14-7 Gelest Silicone >> Silanol functional Coatings Insoluble in water Silanol terminated diphenylsiloxane-dimethylsiloxane copolymer. Used in coatings. Offers special thermal and optical properties. Silanol terminated diphenylsiloxane-dimethylsiloxane copolymer. Used in coatings. Offers special thermal and optical properties.