Stock material or miscellaneous articles – Composite – Of polyester
Patent
1976-07-14
1978-07-04
Ives, P. C.
Stock material or miscellaneous articles
Composite
Of polyester
428578, 428520, 428910, 427331, 427 12, 427 40, 96 75, 96 87R, 526 8, 526 11, B32B 2706, B32B 2736
Patent
active
040989534
ABSTRACT:
Film base material is provided which comprises a film of biaxially oriented synthetic linear polyester of highly hydrophobic character having superimposed thereon adherent to said film a subbing layer which contains a copolymer of vinylidene chloride, an alkyl acrylate or methacrylate, an allyl or methallyl component containing an active methylene group the monomer of which has the general formula ##STR1## wherein T is --CN or --COCH.sub.3, X is O, NH or S, and R is a hydrogen atom or methyl group and optionally at least one copolymerizable acid.
The subbing layer improves the adhesion between the film support and the photographic emulsion layers and prevents the separation of the layers or frilling when the final photographic film is processed.
REFERENCES:
patent: 2808331 (1957-10-01), Unruh et al.
patent: 2835580 (1958-05-01), Godowsky et al.
patent: 3309330 (1967-03-01), Settlage
patent: 3480693 (1969-11-01), Hill et al.
patent: 3681127 (1972-08-01), Fowler et al.
patent: 4002802 (1977-01-01), Bayless
Dodwell Geoffrey Michael
Jennings David Francis
Wright Peter John
Ciba-Geigy AG
Ives P. C.
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