Chemistry of carbon compounds – Miscellaneous organic carbon compounds
Patent
1974-09-30
1977-07-26
Tillman, Murray
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
138177, 138DIG7, 260884, 526247, 526253, 526254, C08L 2718
Patent
active
040382311
ABSTRACT:
A tetrafluoroethylene polymer comprising primary particles having core and shell portions, the core portion comprising tetrafluoroethylene polymerized in the presence of a perfluoroalkyl or alkoxy trifluoroethylene comonomer, particularly hexafluoropropylene, and shell portion consisting of tetrafluoroethylene homopolymer, or a copolymer of tetrafluoroethylene in which the comonomer concentration is less than half that in the core portion.
REFERENCES:
patent: 3019206 (1962-01-01), Robb
patent: 3075939 (1963-01-01), Bauer et al.
patent: 3654210 (1972-04-01), Kuhls et al.
patent: 3798287 (1974-03-01), Murayama et al.
Downer John Michael
Rodway William George
Shipp Laurence Stanley John
Imperial Chemical Industries Limited
Page Thurman K.
Tillman Murray
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