Thermoplastic polycarbonate resins reinforced with silane treated fillers

A composition comprising

• a. A major amount of polymeric resin comprising a thermoplastic aromatic polycarbonate resin in admixture, with
• b. a minor amount of a filler having reactive groups which are normally reactive with aromatic polycarbonate resin, and
• c. a minor amount of a silane of the following formula
• R'--(CH.sub.2).sub.n Si(OR).sub.3
• where R' is an organic radical selected from the group consisting of alkyl, aryl, vinyl, amino, mercapto, acetoxy, epoxy, and methacryloxy,
• n is an integer of about 3 to about 6, and
• R is alkyl having up to four carbon atoms.