Patent ID: 8044006

Claim:
A composition comprising an aryl perfluoropolyether which is a monofunctional aryl perfluoropolyether having the formula of R f —(Y) a —(C t R (u+v) )—(O—C t R 1 (u+v) ) b —R wherein R f has a formula weight of about 400 to about 15,000; R f comprises repeat units selected from the group consisting of (a) J-O—(CF(CF 3 )CF 2 O) c (CFXO) d CFZ—, (b) J 1 -O—(CF 2 CF 2 O) e (CF 2 O) f CFZ 1 —, (c) J 2 -O—(CF(CF 3 )CF 2 O) j CF(CF 3 )—, (d) J 3 -O-(CQ 2 -CF 2 CF 2 —O) k -CQ 2 -, (e) J 3 -O—(CF(CF 3 )CF 2 O) g (CF 2 CF 2 O) h (CFX—O) i —CFZ—, (f) J 4 -O—(CF 2 CF 2 O) k —CF 2 —, and (g) combinations of two or more thereof; and where the units with formulae CF 3 CF 2 O and CF 2 O are randomly distributed along the chain; J is CF 3 , C 2 F 5 , C 3 F 7 , CF 2 Cl, C 2 F 4 Cl, C 3 F 6 Cl, or combinations of two or more thereof; c and d are numbers such that the c/d ratio ranges from about 0.01 to about 0.5; X is —F, —CF 3 , or combinations thereof; Z is —F, —Cl or —CF 3 ; Z 1 is —F or —Cl, J 1 is CF 3 , C 2 F 5 , C 3 F 7 , CF 2 Cl, C 2 F 4 Cl, or combinations of two or more thereof; e and f are numbers such that the elf ratio ranges from about 0.3 to about 5; J 2 is —C 2 F 5 , —C 3 F 7 , or combinations thereof; j is an average number such that the formula weight of R f ranges from about 400 to about 15,000; J 3 is CF 3 , C 2 F 5 , C 3 F 7 , or combinations of two or more thereof; k is an average number such that the formula weight of R f ranges from about 400 to about 15,000; each Q is independently —F, —Cl, or —H; g, h and i are numbers such that (g+h) ranges from about 1 to about 50, the i/(g+h) ratio ranges from about 0.1 to about 0.5; J 4 is CF 3 , C 2 F 5 , or combinations thereof; k′ is an average number such that the formula weight of R f ranges from about 400 to about 15,000; each R is independently —H, a halogen, —OH, —SO 3 M, NR 3 2 , —NO 2 , —R 4 OH, —R 4 SO 3 M, —R 4 NR 3 2 , —R 4 NO 2 , —R 4 CN, —C(O)OR 4 , —C(O)OM, —C(O)R 4 , —C(O)NR 3 2 , or combinations of two or more thereof; except that when b=0, R cannot be four hydrogen atoms and —OH, or —Br, or —NH 2 ; or R cannot be solely H or —NO 2 , or combinations thereof; each R 1 is independently H, —R 4 , —OR 4 , a halogen, —OH, —SO 3 M, —NR 3 2 , —NO 2 , —CN, —R 4 OH, —R 4 SO 3 M, —R 4 NR 3 2 , —R 4 NO 2 , —R 4 CN, —C(O)OR 4 , —C(O)OM, —C(O)R 4 , —C(O)NR 3 2 , or combinations of two or more thereof provided that if b=0, the combination of R and R 2 cannot be four or more hydrogen atoms and —OH, —Br, —NH 2 , or —NO 2 ; each R 3 is independently H, C 1 -C 10 alkyl, or combinations of two or more thereof; R 4 is a C 1 -C 10 alkyl; M is a hydrogen or metal ion; a is 0 or 1; b is 0-5; Y is a divalent radical —CH 2 OCH 2 —, —(CH 2 ) o —O—, —(CF 2 ) n —, —CF 2 O—, —CF 2 OCF 2 —, —C(O)—, —C(S)—, or combinations of two or more thereof; n is about 1 to about 5; o is about 2 to about 5; t is equal to 6+u; u is any combination of 0, 2, 4, 6, 8, 10, 12, 14, 16; and v is independently either 2 or 4.