摘要:
Methane, ethane and propane have been found to be useful as chain transfer agents during the nonaqueous polymerization of tetrafluoroethylene with perfluoro(alkyl vinyl ether) comonomers.
摘要:
A tetrafluoroethylene-perfluoro(alkyl vinyl ether copoly- me) in which heat unstable carbinol end-groups (-CH 2 OH groups) present have been protected against heat degradation by treating the copolymer with NH 3 or NH 3 producing compounds.
摘要:
Hollow glass bubble-containing aqueous dispersions of tetrafluoroethylene polymer having good shelf life are provided, said dispersions also containing nonionic surfactant and water soluble electrolyte.