Chemistry of carbon compounds – Miscellaneous organic carbon compounds – C-metal
Patent
1976-06-29
1978-09-05
Love, Ethel G.
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
C-metal
96 35, 96 86P, 260 458A, 2603407, 568764, C07D31710
Patent
active
041119606
ABSTRACT:
Substituted dioxolanes are provided having the formula ##STR1## wherein R.sup.1 and R.sup.2 are H or a phenyl group substituted with up to 5 substituents of lower alkyl or nitro, with the proviso that at least one of F.sup.1 and R.sup.2 is a phenyl group having an orthonitro substituent; and R.sup.3 and R.sup.4 are each H or lower alkyl. These dioxolanes, as well as appropriate dioxanes, are used to intercalate a polyoxymethylene polymer to make such a polymer having thermally stable but photochemically sensitive and degradable random linkages ##STR2## in the chain where n is 0 or 1, R.sup.3 and R.sup.4 are H or lower alkyl and at least one of R.sup.1 and R.sup.2 is a phenyl group with an orthonitro substituent. By exposing a film of the polymer to light through a transparency followed by heating or a heated treatment with base, a relief image of the copy on the transparency is obtained.
REFERENCES:
hebert et al., Can. J. Chem., vol. 52, Jan. 1, 1974, pp. 187-189.
Baumgarten et al., Journ. Amer. Chem. Soc. 80, 1958, pp. 1977-1981.
Barton, D. Journ. Chem. Soc. Chem. Comm., Jun. 4, 1975, pp. 432-433.
Shirai, et al., J. Appl. Poly. Sci., 17, pp. 1617-1619 (1973).
E. I. Du Pont de Nemours and Company
Love Ethel G.
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