Patent ID: 6514567
Filing Date: 2003-02-04
Classification: C09J,D21H

Abstract:
A method of conferring release properties to cellulose substrata by the application of fluorinated compounds, said fluorinated compounds being selected from the following:B) (Oâˆ’Z+)2P(O)[Oâ€”Lâ€”YFCâ€”Oâ€”Rfâ€”CFYâ€”Lâ€”Oâ€”P(O)(Oâˆ’Z+)]mâ€²â€”â€ƒâ€”[Oâ€”Lâ€”YFCâ€”Oâ€”Rfâ€”CFYâ€”Lâ€”O]P(O)(Oâˆ’Z+)2 wherein:mâ€² is an integer from 0 to 20; L is an organic group selected from â€”CH2â€”(OCH2CH2)nâ€”, â€”COâ€”NRâ€²â€”(CH2)qâ€”, with Râ€²=H or C1-C4 alkyl group; n=0-8; q=1-8; z=H, alkane metal or a NR4 group with R=H or C1-C4 alkyl group; Y=F, CF3; Rf has a number average molecular weight in the range 350-8,000, and it comprises repeating units having at least one of the following structures, statistically placed along the chain: (CFXO), (CF2CF2O), (CF2CF2CF2O), (CF2CF2CF2CF2O), (CR4R5CF2CF2O), (CF(CF3)CF2O), (CF2CF(CF3)O), wherein X=F, CF3; R4 and R5, equal to or different from each other, are selected from H, Cl, or perfluoroalkyl from 1 to 4 carbon atoms.