Onium salt-containing polymer
It is to provide a polymer having a high antistatic function, a high solubility to solvent and high compatibility to a formulation, and an antistatic agent, curable composition or a water repellent and oil repellent comprising the polymer. It is a linear block polymer, block star polymer or block graft polymer in which at least one block is a block wherein an anion and a counter cation form an onium salt on the polymer chain side, and a composition comprising the same. It is preferred that a linear block polymer has a number average molecular weight of 20000 or less, and a block star polymer and block graft polymer has a number average molecular weight of 10000 or more.
1. A linear triblock polymer, consisting of:
a) a block comprising an onium salt consisting of an anion on a polymer side chain and a counter cation, and
b) a block comprising a living anionic polymerization-inactive vinyl group, hydroxyl group or carboxyl group, and
c) a block comprising a fluorocarbon group or trialkylsilyl group on a polymer side chain;
wherein:
the block alignment is in the order of b)-a)-c), and
the main chain polymer in each block is a (meth)acrylate polymer.
2. The linear triblock polymer according to claim 1 , wherein the living anionic polymerization-inactive vinyl group is an allyl group.
3. The linear triblock polymer according to claim 1 , wherein a number average molecular weight is 20000 or less.
4. The linear triblock polymer according to claim 3 , wherein the molecular weight distribution is 1.8 or less.
5. The linear triblock polymer according to claim 1 , wherein the cation component of onium salt is any one of quaternary ammonium, quaternary phosphonium, tertiary sulfonium, quaternary imidazolium, quaternary pyridinium, quaternary thiazolium, or quaternary oxazolium.
6. A composition comprising the linear triblock polymer according to claim 1 , and at least one onium salt monomer represented by the following formulae (I) to (III):
where:
R 1 represents a hydrogen atom or a hydrocarbon group with 1 to 4 carbons;
R 2 represents a hydrogen atom, a hydrocarbon group with 1 to 4 carbons, CH 2 COO 31 , or CH 2 COOR 10 ;
R 10 represents a hydrogen atom, a hydrocarbon group with 1 to 4 carbons, and when it is CH 2 COO − , its counter cation is an ammonium, quaternary ammonium, phosphonium, quaternary phosphonium, or sulfonium;
R 3 to R 8 represent a hydrocarbon group with 1 to 4 carbons;
A represents a nitrogen atom or phosphorus atom;
R 9 represents a hydrogen atom, a hydrocarbon group with 1 to 4 carbons, or CH 2 COOR 12a ;
Ru 12a represents a hydrocarbon group with 1 to 4 carbons;
R 11 and R 12 represent an alkylene group;
R 14 represents a group having the following formula structure:
R 15 to R 21 represent a hydrocarbon group with 1 to 4 carbons;
X represents a halogen atom or R 22 —SO 3 − ; and
R 22 represents an alkyl group, an alkoxy group that may be substituted with a halogen atom, or a phenyl group that may be substituted with an alkyl group, nitro group, or a halogen atom.
7. An antistatic agent comprising the linear triblock polymer according to claim 1 .
8. A curable composition comprising the linear triblock polymer according to claim 1 .
9. A water repellent and oil repellent comprising the linear triblock polymer according to claim 1 .