| 摘要 |
Fluoropolymer aqueous dispersions comprising an hydrogenated nonionic surfactant and a fluorinated nonionic surfactant selected from the following classes:wherein:n is an integer comprised between 4 and 60;L is selected from:-(CF(Y)-CO-O)pR'-; -(CF(Y)-CO-NH)pR'-;-(CF(Y)-SO2-NH)pR'-;wherein: p is 0 or 1; Y can be F or CF3; R' is an alkylic radical C1-C5;R1, R2 can preferably be both H or the former H and the latter CH3,Rf can be a radical of (per)fluoroalkane type from 4 to 20 C atoms or of (per)fluoropolyether type;A is selected from the following ones:-H; -CH, -CH2OH; -CH2OCH2CH2OH; -CH2(OCH2CH2)n'''OR' wherein n''' is an integer between 2 and 15 and R' is H, CH3, COCH3; -CONHCH2CH2OH.
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