This invention relates to a process of enhanced oil recovery by sweeping an underground formation comprising injecting into the underground formation an injection fluid comprising at least one water-soluble LCST macromonomeric polymer.

This invention relates to a process of enhanced oil recovery by sweeping an underground formation comprising injecting into the underground formation an injection fluid comprising at least one water-soluble LCST macromonomeric polymer.

Provided is a copolymer which has a mass average molecular weight (Mw) of 240,000 or greater and 3,500,000 or less, a structural unit derived from an acrylate (B1) and a structural unit derived from aromatic vinyl (B2), and a branched structure.

Provided is a copolymer which has a mass average molecular weight (Mw) of 240,000 or greater and 3,500,000 or less, a structural unit derived from an acrylate (B1) and a structural unit derived from aromatic vinyl (B2), and a branched structure.

An optical laminated member having an antiglare hard coat layer and a clear hard coat layer sequentially laminated on at least one side of a transparent polymer substrate, the antiglare hard coat layer being a cured layer of a coating composition for forming an antiglare layer and having continuous random irregularities on its surface, and a ten-point average roughness Rz.sub.JIS of a surface of the antiglare hard coat layer is 0.1 to 2 μm, the clear hard coat layer is a cured layer of a clear hard coating composition, the clear hard coat layer is laminated on a part of the antiglare hard coat layer.

An optical laminated member having an antiglare hard coat layer and a clear hard coat layer sequentially laminated on at least one side of a transparent polymer substrate, the antiglare hard coat layer being a cured layer of a coating composition for forming an antiglare layer and having continuous random irregularities on its surface, and a ten-point average roughness Rz.sub.JIS of a surface of the antiglare hard coat layer is 0.1 to 2 μm, the clear hard coat layer is a cured layer of a clear hard coating composition, the clear hard coat layer is laminated on a part of the antiglare hard coat layer.

A fluorine-containing resin particle contains 0 or more and 30 or less carboxyl groups per 10.sup.6 carbon atoms and 0 ppm or more and 3 ppm or less of a basic compound.

A fluorine-containing resin particle contains 0 or more and 30 or less carboxyl groups per 10.sup.6 carbon atoms and 0 ppm or more and 3 ppm or less of a basic compound.

Provided is an electrophotographic belt including at least: a base layer; and a surface layer containing the following A, B, and C:

A: a compound 1 having structures represented by formula (I) and formula (II):

##STR00001##

in the formula (I), R1 represents a linking group, and R2 represents a hydrogen atom or a methyl group;

##STR00002##

in the formula (II), R3 represents a hydrogen atom, a methyl group, or a methyl ester group, R4 represents a linking group, R5 represents a methyl group or a tert-butyl group, and “m” represents an integer of from 25 to 100;
B: perfluoropolyether;
C: a binder resin.

Provided is an electrophotographic belt including at least: a base layer; and a surface layer containing the following A, B, and C:

A: a compound 1 having structures represented by formula (I) and formula (II):

##STR00001##

in the formula (I), R1 represents a linking group, and R2 represents a hydrogen atom or a methyl group;

##STR00002##

in the formula (II), R3 represents a hydrogen atom, a methyl group, or a methyl ester group, R4 represents a linking group, R5 represents a methyl group or a tert-butyl group, and “m” represents an integer of from 25 to 100;
B: perfluoropolyether;
C: a binder resin.