| 主权项 |
1. A composition comprising a compound containing a carbon-carbon double bond obtained by reacting
(A) a polyisocyanate which is a trimer of diisocyanate, with (B) a compound having an active hydrogen,wherein
component (B) comprises: (B1) a perfluoropolyether having an active hydrogen, and (B2) a monomer having an active hydrogen and at least two groups having a carbon-carbon double bond, the perfluoropolyether having an active hydrogen is at least one compound of any one of the following general formulae (B1-i) and (B1-ii):
Rf—PFPE1-Z—X (B1-i)X—Z—PFPE2-Z—X (B1-ii)wherein:
Rf is an alkyl group having 1-16 carbon atoms which may be substituted by one or more fluorine atoms; PFPE1 is a group of the formula:
—(OCF2CF2CF2)b—wherein b is an integer of 1-200;
—(OCF2CF2CF2CF2)a—(OCF2CF2CF2)b—(OCF2CF2)c—(OCF2)d—wherein a and b are each independently 0 or an integer of 1-30, and c and d are each independently an integer of 1-200, and the occurrence order of the respective repeating units in parentheses with the subscript a, b, c or d is not limited in the formula;or
—(OC2F4—R5)i— wherein R5 is a group selected from OC2F4, OC3F6 and OC4F8; and i is an integer of 2-100; PFPE2 is a group of the formula:
—(OCF2CF2CF2)b— wherein b is an integer of 1-200,or
—(OC2F4—R5)i— wherein R5 is a group selected from OC2F4, OC3F6 and OC4F8; and i is an integer of 2-100; Z is each independently a divalent organic group; and X is an active hydrogen containing group. |
