Identify the false statement(s). P. PVC has higher glass transition temperature than that of nylon-6,6. Q. Ultem is a trade product of SABIC and used in medical and chemical instrumentation. R. PET fibers are manufactured under the trade name of Teflon.

P. PVC (polyvinyl chloride) has glass transition temperature of 80 ^oC. The glass transition temperature of nylon-6,6 is 70 ^oC. Q. Polyetherimide (PEI) is an amorphous, amber-to-transparent thermoplastic. Ultem is a family of PEI products manufactured by SABIC as a result of acquiring the General Electric Plastics Division in 2007. Ultem resins are used in medical and chemical instrumentation due to their heat, solvent and flame resistance properties. R. Polyethylene terephthalate (PET), or polyethylene terephthalic ester (PETE), is a condensation polymer produced from the monomers ethylene glycol, (a dialcohol) and dimethyl terephthalate (a diester). PET fibers are manufactured under the trade name of Dacron. Polytetrafluoroethylene (PTFE) is a synthetic fluoropolymer of tetrafluoroethylene that has numerous applications. The best known brand name of PTFE is Teflon by DuPont Co. Hence, the statement R is false.