Stock material or miscellaneous articles – Structurally defined web or sheet – Including components having same physical characteristic in...
Patent
1990-12-07
1992-03-31
Cashion, Jr., Merrell C.
Stock material or miscellaneous articles
Structurally defined web or sheet
Including components having same physical characteristic in...
428327, 428407, 428480, 428910, B32B 702, B32B 2718
Patent
active
051007193
ABSTRACT:
A biaxially oriented polyester film containing 0.01 to 4 wt % of multilayered high-molecular particles having a weight-average particle size of 0.05 to 3 .mu.m which comprise core crosslinked high-molecular particles having a glass transition temperature of not lower than 100.degree. C. coated with a crosslinked polymer having a glass transition temperature of lower than 100.degree. C., the ratio Dw/Dn of the weight-average particle size (Dw) and the number-average particle size (Dn) being not more than 1.3 is disclosed. The film of the present invention has excellent running property and wear resistance and is useful as a base film for various products such as magnetic recording media, capacitors, photomechanical plates, electric insulators, heat-sensitive transfer film, packaging film, transfer marks and gold and silver threads. Thus, the present invention has a high industrial value.
REFERENCES:
patent: 4568616 (1986-02-01), Seifried et al.
patent: 4746703 (1988-05-01), Dallmann et al.
patent: 5032458 (1991-07-01), Dallmann et al.
Endo Kazuo
Komiyama Megumi
Cashion Jr. Merrell C.
Conlin David G.
Diafoil Company Limited
Nakarani D. S.
O'Connell Robert F.
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