Polymers, processes for producing the same, and curable compositions produced therefrom
AssigneeKaneka Corporation
InventorsKenichi Kitano, Yoshiki Nakagawa, Masato Kusakabe
Life of this patent
Estimating the term…
Abstract
An alkenyl- or crosslinkable silyl-terminated vinyl polymer is provided. Such a functional group is introduced into its terminus at a high ratio, not via sulfur atoms. Those polymers can be prepared by polymerizing a vinyl monomer for obtaining a halogen-terminated vinyl polymer, and then substituting an oxy anion or carbanion having such a functional group for the terminal halogen of said polymer.
Claims54
A vinyl polymer having an alkenyl group of the following general formula (1) at at least one terminus of its main chain:
- —CH2—C(R1)(R2)—O—R3—C(R4)═CH2 (1)
- (wherein R1and R2are the same or different, and each represents a univalent organic group;
- R3 represents a divalent organic group having 1 to 20 carbon atoms and optionally containing one or more ether or ester bonds;
- R4 represents hydrogen, an alkyl group having 1 to 10 carbon atoms, an aryl group having 6 to 10 carbon atoms, or an aralkyl group having 7 to 10 carbon atoms).
A vinyl polymer having an alkenyl group of the following general formula (5) at at least one terminus of its main chain:
- —CH2—C(R1)(R2)—C(R6)(R7)—R8—C(R9)═CH2 (5)
- (wherein R1 and R2 are the same or different, and each represents a univalent organic group;
- R6 and R7 are the same or different, and each represents an electron-withdrawing group or one of them represents an electron-withdrawing group with the other representing hydrogen, an alkyl group having 1 to 10 carbon atoms, or phenyl;
- R8 represents a direct bond or a divalent organic group having 1 to 10 carbon atoms and optionally containing one or more ether bonds;
- R9 represents hydrogen, an alkyl group having 1 to 10 carbon atoms, an aryl group having 6 to 10 carbon atoms, or an aralkyl group having 7 to 10 carbon atoms).
A vinyl polymer having an crosslinkable silyl group of the following general formula (6) at at least one terminus of its main chain:
- —CH2—C(R1)(R2)—C(R6)(R7)—R8—C(R9)—CH2—[Si(R10)2-b(Y)bO]m—Si(R11)3-a(Y)a (6)
- [wherein R1 and R2 are the same or different, each represents a univalent organic group;
- R6 and R7 are the same or different, each represents an electron-withdrawing group or one of them represents an electron-withdrawing group with the other representing hydrogen, an alkyl group having 1 to 10 carbon atoms, or phenyl;
- R8 represents a direct bond or a divalent organic group having 1 to 10 carbon atoms and optionally containing one or more ether bonds;
- R9 represents hydrogen, an alkyl group having 1 to 10 carbon atoms, an aryl group having 6 to 10 carbon atoms, or an aralkyl group having 7 to 10 carbon atoms;
- R10 and R11 are the same or different, each represents an alkyl group having 1 to 20 carbon atoms, an aryl group having 6 to 20 carbon atoms, an aralkyl group having 7 to 20 carbon atoms, or a triorganosiloxy group of the formula (R′)3SiO— (R′ represents a univalent hydrocarbon group of 1 to 20 carbon atoms and three Rs are the same or different) and when two or more R10 or R11 occur, they are the same or different;
- Y represents hydroxyl or a hydrolyzable group and when two or more Y occur, they are the same or different;
- a represents 0, 1, 2, or 3;
- b represents 0, 1, or 2;
- m represents an integer of 0 to 19, provided that a+mb≧1].
Dependencies are inferred from the claim text.