Siloxane-amide block copolymer and process for producing the same

Claim 2

A siloxane-amide block copolymer represented by formula (I): ##STR19## wherein Y represents an organosilyl group containing a hydrolyzable group represented by formula --SiR 5 a X 3-a ; R 1 represents a divalent group selected form the group consisting of ##STR20## R 2 represents a substituted or unsubstituted divalent hydrocarbon group; R 3 represents a substituted or unsubstituted monovalent hydrocarbon group; R 4 represents a substituted or unsubstituted divalent aromatic hydrocarbon group; R 5 represents a substituted or unsubstituted monovalent hydrocarbon group; R 6 represents a hydrogen atom, the same substituted or unsubstituted monovalent hydrocarbon group as represented by R 3 or an organosilyl group represented by formula --SiR 8 b X 3-b ; R 7 represents a substituted or unsubstituted divalent hydrocarbon group containing up to 8 carbon atoms which may contain therein an ether linkage containing an oxygen or sulfur atom; R 8 represents the same monovalent group as represented by R 3 ; X represents a hydrolyzable group or hydroxyl group bonded to the silicon atom; a represents 0 or an integer of 1 or 2; b represents 0 or an integer of from 1 to 3; and m and n each represents a number of 1 or more.

Claim 3

A siloxane-amide block copolymer as claimed in claim 1, wherein ##STR21##

Claim 4

A siloxane-amide block copolymer as claimed in claim 1, wherein Y--R 1 -- is ##STR22##

Claim 5

A process for producing a siloxane-amide block copolymer represented by formula (I): ##STR23## wherein Y represents an organosilyl group containing a hydrolyzable group represented by formula --SiR 5 a X 3-a ; R 1 represents a divalent group selected from the group consisting of ##STR24## R 2 represents a substituted or unsubstituted divalent hydrocarbon group; R 3 represents a substituted or unsubstituted monovalent hydrocarbon group; R 4 represents a substituted or unsubstituted divalent aromatic hydrocarbon group; R 5 represents a substituted or unsubstituted monovalent hydrocarbon group; R 6 represents a hydrogen atom, the same substituted or unsubstituted monovalent hydrocarbon group as represented by R 3 or an organosilyl group represented by formula --SiR 8 b X 3-b ; R 7 represents a substituted or unsubstituted divalent hydrocarbon group containing up to 8 carbon atoms which may contain therein an ether linkage containing an oxygen or sulfur atom; R 8 represents the same monovalent group as represented by R 3 ; X represents a hydrolyzable group or hydroxyl group bonded to the silicon atom; a represents 0 or an integer of 1 or 2; b represents 0 or an integer of from 1 to 3; and m and n each represents a number of 1 or more, which comprises mixing a diaminosiloxane represented by formula (II): ##STR25## wherein R 2 , R 3 and m are as defined above, and a dicarboxylic acid dihalide represented by formula (III) in an amount of from 1.005 to 2.0 mols of the diaminosiloxane per mol of the dicarboxylic acid dihalide: ##STR26## wherein R 4 is as defined above; and Z represents a halogen atom, to form a polycondensate; and adding an epoxy silane represented by formula (IV) to said polycondensate: R.sup.9 --SiiR.sup.5.sub.a X.sub.3-a (IV) wherein R 5 , X, and a are as defined above; and R 9 represents an epoxy group-containing organic group represented by formula ##STR27## wherein R 7 is as defined above, to effect ring-opening addition to the both terminal groups of the polymer.

Claim 6

A process for producing a siloxane-amide block copolymer represented by formula (I): ##STR23## wherein Y represents an organosilyl group containing a hydrolyzable group represented by formula --SiR 5 a X 3-a ; R 1 represents a divalent group selected from the group consisting of ##STR24## R 2 represents a substituted or unsubstituted divalent hydrocarbon group; R 3 represents a substituted or unsubstituted monovalent hydrocarbon group; R 4 represents a substituted or unsubstituted divalent aromatic hydrocarbon group; R 5 represents a substituted or unsubstituted monovalent hydrocarbon group; R 6 represents a hydrogen atom, the same substituted or unsubstituted monovalent hydrocarbon group as represented by R 3 or an organosilyl group represented by formula --SiR 8 b X 3-b ; R 7 represents a substituted or unsubstituted divalent hydrocarbon group containing up to 8 carbon atoms which may contain therein an ether linkage containing an oxygen or sulfur atom; R 8 represents the same monovalent group as represented by R 3 ; X represents a hydrolyzable group or hydroxyl group bonded to the silicon atom; a represents 0 or an integer of 1 or 2; b represents 0 or an integer of from 1 to 3; and m and n each represents a number of 1 or more, which comprises mixing a diaminosiloxane represented by formula (II): ##STR25## wherein R 2 , R 3 and m are as defined above, and a dicarboxylic acid dihalide represented by formula (III) in an amount of from 1.005 to 2.0 mols of the diaminosiloxane per mol of the dicarboxylic acid dihalide: ##STR26## wherein R 4 is as defined above; and Z represents a halogen atom, to form a polycondensate; and adding an epoxy silane represented by formula (IV) to said polycondensate: R.sup.9 --SiiR.sup.5.sub.a X.sub.3-a (IV) wherein R 5 , X, and a are as defined above; and R 9 represents an epoxy group-containing organic group represented by formula ##STR27## wherein R 7 is as defined above, to effect ring-opening addition to the both terminal groups of the polymer.

Claim 7

A process as claimed in claim 4, wherein said dicarboxylic acid dihalide is phthalic dichloride.

Claim 8

A process as claimed in claim 4, wherein said dicarboxylic acid dihalide is isophthalic dichloride.