Polymeric surfactants derived from cyclic monomers having pendant fluorinated carbon groups
View Patent ↗A fluorine containing polymer which acts as a wetting, flow or leveling agent, and has at least one polar group. The polymer has at least one pendant or ether side chain containing from about 1 to about 20 carbon atoms with at least 25% of the hydrogen atoms being replaced by fluorine atoms. The fluorinated polymers unexpectedly impart wetting, flow or leveling properties to a variety of coatings while producing little foam.
1. A grafted polysiloxane composition, comprising:
a polysiloxane having a repeat unit of the formula
wherein R 1 , R 2 , and R 3 , independently, is a hydrogen or an alkyl having from 1 to about 20 carbon atoms with the proviso that at least one of said R 1 , R 2 , and R 3 , groups is an alkyl,
said polysiloxane repeat unit having a pendant fluorooxetane oligomer, polymer, or copolymer containing a repeat group of the formula
wherein n is from 1 to about 6, wherein R is hydrogen or an alkyl having from 1 to about 6 carbon atoms, wherein DP is from 2 to about 100, and wherein each R f , independently, is a linear or branched alkyl having from 1 to about 20 carbons with at least 50% of the hydrogen atoms being replaced by a fluorine atom.
2. A grafted polysiloxane composition according to claim 1 , wherein said siloxane R 1 , R 2 , and R 3 , independently, is an alkyl having from 1 to 10 carbon atoms, and
wherein said Rf has at least 75% of said hydrogen atoms replaced by F.
3. A grafted polysiloxane composition according to claim 2 , wherein said fluorooxetane repeat unit n is from 1 to about 3, R is an alkyl having from 1 to 3 carbon atoms, wherein R f has at least 90% of said hydrogen atoms replaced by F, and wherein said R f contains from 1 to about 10 carbon atoms.
4. A grafted polysiloxane composition according to claim 3 , wherein said siloxane R 1 , R 2 , and R 3 , independently, is methyl or ethyl, and
wherein in said fluorooxetane repeat unit R f has from 1 to 7 carbon atoms.
5. A grafted polysiloxane composition according to claim 4 , wherein in said fluorooxetane repeat unit R f is perfluorinated and contains from 1 to 5 carbon atoms, and wherein DP is from 2 to about 4.
6. A flow, or wetting, or leveling agent, comprising the composition of claim 1 .
7. A flow, or wetting, or leveling agent, comprising the composition of claim 3 .
8. A flow, or wetting, or leveling agent, comprising the composition of claim 5 .
9. A solution comprising a flow, or leveling, or wetting agent, comprising the composition of claim 1 .
10. A polymeric solution containing a flow, or leveling, or wetting agent, comprising the composition of claim 1 , and wherein said polymer is an aqueous soluble dispersible, or emulsifiable polymer.
11. A polymeric solution containing flow, or leveling, or wetting agent comprising the composition of claim 3 , wherein seid polymer is an aqueous soluble, dispersible or emulsifiable polymer.
12. A polymeric solution containing a flow, or leveling, or wetting agent, comprising the composition of claim 3 , wherein said polymer is an aqueous soluble, dispersible, or emulsifiable polymer, and wherein said polymer is a polyacetate, a polyacrylate, a polyacrylic acid, a polyester, a polyether, or a polyurethane, or a fluorine containing polymer, or combinations thereof.
13. A polymeric solution containing a flow, or leveling, or wetting agent, comprising the composition of claim 3 , wherein said polymer is a solvent soluble polymer.
14. A polymeric composition containing a flow, or leveling, or wetting agent, comprising the composition of claim 4 , wherein said polymer is a solvent soluble polymer, and wherein said polymer is a polyacrylate, a polyester, a polyurethane, an epoxy, an alkyd, or a fluorine containing polymer, or combinations thereof.