Ortho-nitrophenylethylene glycols

Details Ortho-nitrophenylethylene glycols Ortho-nitrophenylethylene glycols

1978-06-08

1980-02-19

Evans, Joseph E.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

430281, 430270, 430302, 430307, 568705, C07C 3114, G03C 168

Patent

active

041896114

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 R.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:
patent: 3849137 (1974-11-01), Barzynski et al.
Hebert et al., "Can. J. Chem.", 52(1), pp. 187-189 (1974).
Yagupolskii et al., "J. Gen. Chem. USSR", 30, pp. 1314-1317 (1960).
Wubbels et al., "Tetrahedron Letters", 20, pp. 1689-1691 (1970).
Shirai et al., "J. Appl. Poly. Sci.", 17, pp. 1617-1619 (1973).
Leggetter et al., "Can. J. Chem.", 42, pp. 990-1004 (1964).
Baumgarten et al., "J. Am. Chem. Soc.", 80, pp. 1977-1981 (1958).
Barton et al., "J.C.S. Chem. Comm.", pp. 432-433 (1975).
Yagupolskii et al., "Zhur. Obsh. Khim., " 28 Nr. 6, pp. 1608-1610 (1958).

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