Method to lower the dynamic surface tension of a composition

Patent metadata

Field	Value
Publication number	US-9944786-B2
Application number	US-201615210748-A
Country	US
Kind code	B2
Filing date	Jul 14, 2016
Priority date	Feb 23, 2012
Publication date	Apr 17, 2018
Grant date	Apr 17, 2018

Abstract

The present invention relates to a composition, comprising
a binder resin, a block copolymer which comprises at least a block A and a block B, wherein
the block A comprises monomer units derived from a compound selected from (meth)acrylic acid, a (meth)acrylic acid ester, a (meth)acrylamide, a vinyl aromatic compound, or any mixture thereof, the block B comprises monomer units derived from a compound selected from a fluorinated (meth)acrylic ester having the following formula (I):

H 2 C═C(R 1 )(C(O)OR F-1 )  (I)
wherein R1 is H or methyl; and R F-1 is an organic residue containing a perfluorinated C 4-6 alkyl group,
a fluorinated alpha-olefin having the following formula (II):

H 2 C═CH(R F-2 )  (II)
wherein R F-2 is an organic residue containing a perfluorinated C 4-6 alkyl group, i.e., —(CF 2 ) 3-5 —CF 3
or any mixture thereof.

First claim

The invention claimed is:

1. A method to lower the dynamic surface tension of a composition in a high speed coating process, wherein the composition is one selected from the group consisting of a coating composition, an ink composition and an adhesive composition,
the method comprising:
adding from 0.05 to 15 wt % relative to the weight of the composition of a block copolymer; and
applying the composition comprising the block copolymer to a substrate in a high speed-coating process;
wherein the block copolymer comprises:
a block A and a block B, wherein
the block A comprises monomer units derived from a compound selected from (meth)acrylic acid, a (meth)acrylic acid ester, a (meth)acrylamide, a vinyl aromatic compound, or a mixture thereof, and
the block B comprises monomer units derived from a compound selected from a fluorinated (meth)acrylic ester having the following formula (I):
H 2 C═CR 1 (C(O)OR F-1 )  (I)

wherein
R1 is H or methyl; and
R F-1 is an organic residue containing a perfluorinated C 4-6 alkyl group,
a fluorinated alpha-olefin having the following formula (II):
H 2 C═CH(R F-2 )  (II)

wherein R F-2 is an organic residue containing a perfluorinated C 4-6 alkyl group,
or a mixture thereof.

2. The method to lower the dynamic surface tension of a composition according to claim 1 , wherein the composition is one composition selected from the group consisting of a water-based coating composition, a powder coating composition, a solvent-borne ink, a water-borne ink, a UV ink and a UV coating.

3. The method to lower the dynamic surface tension of a composition according to claim 1 , wherein a number average molecular weight of the fluorinated block copolymer is from 6,000 to 50,000 g/mol.

Assignees

• Basf Se

Inventors

• Thomson Mary
• Knischka Ralf
• Auschra Clemens
• Engelbrecht Lothar

Classifications

• C08L53/00 Primary

  Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers · CPC title

• C08G18/6225

  Polymers of esters of acrylic or methacrylic acid · CPC title

• C09D153/00

  Coating compositions based on block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Coating compositions based on derivatives of such polymers · CPC title

• C09D11/107

  from unsaturated acids or derivatives thereof · CPC title

• C09D11/106

  containing macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds · CPC title