Stock material or miscellaneous articles – Composite – Of polyester
Patent
1981-03-02
1982-10-19
Van Balen, William J.
Stock material or miscellaneous articles
Composite
Of polyester
428522, B32B 2708, B32B 2718, B32B 2736
Patent
active
043550800
ABSTRACT:
Disclosed are polyester substrates or sheets laminated with an acrylic film and having exceptionally improved resistance to surface deterioration on weathering. These laminates are especially suited for use in applications such as windows, signs, solar collectors, green house covers and the like which are subject to extended periods of outdoor exposure. Typical polyesters include modified poly(ethylene terephthalate), and modified poly(1,4-cyclohexylenedimethylene terephthalate) such as those of terephthalic acid with ethylene glycol and 1,4-cyclohexanedimethanol, e.g., poly(69/31 molar-ethylene/1,4-cyclohexylenedimethylene terephthalate) and poly(65/35 molar-1,4-cyclohexylenedimethylene/ethylene terephthalate). The acrylic polymer films suitable forlamination to the polyester sheeting are homopolymers and copolymers prepared from either or both of the monomers H.sub.2 C.dbd.CHCO.sub.2 R and H.sub.2 C.dbd.C(CH.sub.3)CO.sub.2 R.sup.1 wherein R and R.sup.1 are each selected from C.sub.1 -C.sub.12 linear or branched alkyl groups.
REFERENCES:
patent: 2901466 (1959-08-01), Kibler et al.
patent: 4064314 (1977-12-01), McKenzie
Eastman Kodak Company
Reece III Daniel B.
Spurrell Donald W.
Van Balen William J.
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