发明授权
US4477498A Process for the production of perfluoroalkyl residue containing condensation products, the condensation products prepared accordingly, and their use 失效
生产含有缩合产物的全氟烷基残基的方法,相应制备的缩合产物及其用途

Process for the production of perfluoroalkyl residue containing
condensation products, the condensation products prepared accordingly,
and their use
摘要:
The present invention relates to new condensation products of(A) 1 mole of a highly etherified hexamethylol melamine and(B) 3 to 6 moles of a thiol of the formulaR.sub.f --X--SH, (1) Rf standing for perfluorinated alkyl with 4 to 14 C-atoms and X for divalent ethylene or isopropylene radicals, wherein the components (A) and (B) are reacted under increasing temperature up to at least 145.degree. C. within a period of at least 40 minutes.In form of their aqueous dispersions, the condensation products are suitable for oil- and water-repellent finishing of fibrous, preferably textile materials.
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