Provided is a polymer functioning as a leveling agent that imparts high smoothness to a coating film. Specifically, a polymer containing a polymer block (A1) of a polymerizable monomer (a1) having a functional group represented by —Si[OSi(R).sub.3].sub.n[R′].sub.3-n (n is an integer of 1 to 3, each R independently represents an alkyl group having 1 to 3 carbon atoms, and each R′ independently represents an alkyl group having 1 to 3 carbon atoms). Also provided are a coating composition, a resist composition, and an article containing the polymer.

Provided is a polymer functioning as a leveling agent that imparts high smoothness to a coating film. Specifically, a polymer containing a polymer block (A1) of a polymerizable monomer (a1) having a functional group represented by —Si[OSi(R).sub.3].sub.n[R′].sub.3-n (n is an integer of 1 to 3, each R independently represents an alkyl group having 1 to 3 carbon atoms, and each R′ independently represents an alkyl group having 1 to 3 carbon atoms). Also provided are a coating composition, a resist composition, and an article containing the polymer.

Provided is a fluorine-containing siloxane acrylate represented by formula (1).

X—Z-PFPE-Z—X   (1)

[PFPE is a divalent perfluoropolyether chain, X is a group represented by formula (2)

##STR00001##

{Y.sup.1 is a divalent organic group, R.sup.2 is a hydrogen atom, a fluorine atom, a methyl group, or a trifluoromethyl group, and G is a monovalent hydrocarbon group or a group represented by formula (3)

O—Si(CH.sub.3).sub.2—Y.sup.1—OR.sup.1   (3)

(R.sup.1 is a monovalent hydrocarbon group, and Y.sup.1 is same as mentioned above. The broken line represents a bond (hereinafter, the same shall apply.)) Q is a hydrogen atom or a group represented by formula (4)

SiR.sup.3.sub.3   (4)

(R.sup.3 is a monovalent hydrocarbon group.) e is an integer of 0-2, f is an integer of 0-2, and g is an integer of 1-3, and e+f+g is 3.} Z is a predetermined divalent organic group.]

Provided is a fluorine-containing siloxane acrylate represented by formula (1).

X—Z-PFPE-Z—X   (1)

[PFPE is a divalent perfluoropolyether chain, X is a group represented by formula (2)

##STR00001##

{Y.sup.1 is a divalent organic group, R.sup.2 is a hydrogen atom, a fluorine atom, a methyl group, or a trifluoromethyl group, and G is a monovalent hydrocarbon group or a group represented by formula (3)

O—Si(CH.sub.3).sub.2—Y.sup.1—OR.sup.1   (3)

(R.sup.1 is a monovalent hydrocarbon group, and Y.sup.1 is same as mentioned above. The broken line represents a bond (hereinafter, the same shall apply.)) Q is a hydrogen atom or a group represented by formula (4)

SiR.sup.3.sub.3   (4)

(R.sup.3 is a monovalent hydrocarbon group.) e is an integer of 0-2, f is an integer of 0-2, and g is an integer of 1-3, and e+f+g is 3.} Z is a predetermined divalent organic group.]

An inhaler comprising a valve having a valve volume of no more than 40 micro liters and a valve having a first layer comprising a silane and a second layer comprising a polyfluoropolyether silane—and albuterol.

An inhaler comprising a valve having a valve volume of no more than 40 micro liters and a valve having a first layer comprising a silane and a second layer comprising a polyfluoropolyether silane—and albuterol.

The invention relates to a bi-functionalized polysiloxane brush copolymer comprising at least one hydroxyl-terminated polyalkyleneglycol side chain and at least one onium-functionalized side chain as defined herein, and a method for preparing the bi-functionalized polysiloxane brush copolymer, a curable composition comprising the bi-functionalized polysiloxane brush copolymer and its use.

The invention relates to a bi-functionalized polysiloxane brush copolymer comprising at least one hydroxyl-terminated polyalkyleneglycol side chain and at least one onium-functionalized side chain as defined herein, and a method for preparing the bi-functionalized polysiloxane brush copolymer, a curable composition comprising the bi-functionalized polysiloxane brush copolymer and its use.

This alkoxysilyl group-containing perfluoropolyether compound represented by formula (1) is soluble in saturated hydrocarbon solvents and yields a coating film having excellent water repellency and oil repellency.

X—Z-PFPE-Z—X  (1)

(PFPE denotes a divalent perfluoropolyether chain having a number average molecular weight of 500-5000; X denotes a group represented by formula (2);

##STR00001## Q.sup.1 denotes a divalent organic group having 2-12 carbon atoms; Q.sup.2 denotes a divalent organic group having 2-12 carbon atoms; R.sup.1 denotes an alkyl group having 1-12 carbon atoms; G denotes an alkyl group having 1-12 carbon atoms; a is 0-2; b is 1-3; c is 0-2; a, b and c are integers that satisfy the relationship a+b+c=3; d is an integer from 0 to 2; and the dotted line denotes a bond.)
(Z denotes a divalent organic group represented by any of the formulae below.)

##STR00002##

(A dotted line denotes a bond, and ** denotes a bonding site to the PFPE.)

This alkoxysilyl group-containing perfluoropolyether compound represented by formula (1) is soluble in saturated hydrocarbon solvents and yields a coating film having excellent water repellency and oil repellency.

X—Z-PFPE-Z—X  (1)

(PFPE denotes a divalent perfluoropolyether chain having a number average molecular weight of 500-5000; X denotes a group represented by formula (2);

##STR00001## Q.sup.1 denotes a divalent organic group having 2-12 carbon atoms; Q.sup.2 denotes a divalent organic group having 2-12 carbon atoms; R.sup.1 denotes an alkyl group having 1-12 carbon atoms; G denotes an alkyl group having 1-12 carbon atoms; a is 0-2; b is 1-3; c is 0-2; a, b and c are integers that satisfy the relationship a+b+c=3; d is an integer from 0 to 2; and the dotted line denotes a bond.)
(Z denotes a divalent organic group represented by any of the formulae below.)

##STR00002##

(A dotted line denotes a bond, and ** denotes a bonding site to the PFPE.)