Polyester film for magnetic tape

Details Polyester film for magnetic tape Polyester film for magnetic tape

1977-09-29

1979-02-06

Person, Sandra M.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260DIG35, 528273, 260860, C08K 326, C08K 332, C08K 509, C08K 552

Patent

active

041383869

ABSTRACT:
Polyester film for magnetic tape including discrete polyester particles containing lithium, calcium and phosphorus, said particles having an average size in the range from 0.1 to 3.0 .mu.m and inert pigments having an average size of 1.0 to 10.0 .mu.m.
Magnetic tape from this film has improved abrasion resistance and reduced the occurrence of "drop out".

REFERENCES:
patent: 3962189 (1976-06-01), Russin et al.
patent: 4008207 (1977-02-01), Omoto et al.

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