Perfluorinated esters of fumaric acid and certain other ethylenically unsaturated poly-basic acid and soil repellant polymers thereof
AssigneeGeigy Chemical Corporation
InventorsEduard K. Kleiner, Martin Knell
Life of this patent
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Abstract
Monomeric esters of fumaric, maleic, citraconic, mesaconic, itaconic, aconitic, or methylene malonic acid and alcohols of the formula C.sub.m F2.sub.m+1 C.sub.n H2.sub.n OH and mercaptans of the formula C.sub.m F2.sub.m+1 C.sub.n H2.sub.n SH form homopolymers and form copolymers with other ethylenically unsaturated comonomers. The polymers obtained have valuable soil repellent properties and are especially useful in textile finishes. Preferred compounds are bis (1,1,2,2-tetrahydroperfluorononyl) fumarate and bis (1,1-dihydroperfluorooctyl) fumarate.
Claims2
A compound of the formula:
- ##STR22## wherein m is 6 to 12,
- n is 1 or 2,
- R.sub.1 and R.sub.2 are (a) hydrogen, (b) methyl, or ##STR23## wherein m and n are as defined above;
- and R.sub.3 is (a) hydrogen;
- ##STR24## wherein m and n are as defined above;
- provided that when
- R.sub.1 is (a), R.sub.2 is (a), and R.sub.3 is (c) or (d);
- or
- R.sub.1 is (a), R.sub.2 is (c), and R.sub.3 is (a) or (d);
- or
- R.sub.1 is (b), R.sub.2 is (c), and R.sub.3 is (a);
- or
- R.sub.1 is (c), R.sub.2 is (a), and R.sub.3 is (a) or (d);
- or
- R.sub.1 is (c), R.sub.2 is (b), and R.sub.3 is (a).
Bis (1,1,2,2-tetrahydroperfluorononylthiolo) fumarate.
Dependencies are inferred from the claim text.