| 摘要 |
Monomers of formula: (CmF2m + 1 -CnH2n-X-CO)s-R (where m is an integer from 3 to 18; n is zero to 10; X is O or S; R is an ethylenically unsaturated hydrocarbon group derived from fumaric, maleic, citraconic, mesaconic, itaconic, aconitic or methylene malonic acid; and s is 2 or 3. Bis-(1,1-dihydroperfluoroctyl)-, bis-(1,1,2,2-tetrahydroperfluoroctyl)-, and bis-(1,1,2,-2-tetrahydroperfluornonyl)- fumarate. The (co)polymers give water- and oil-repellent coatings on textiles, paper, leather, painted wood and metal surfaces, and are particularly useful for finishing textiles giving finishes resistant to repeated washing and dry-cleaning. |
