Symmetric hyperbranched type silicone-modified polymerizable compound, and its modularized preparation method

Patent metadata

Field	Value
Publication number	US-9428527-B2
Application number	US-201414773942-A
Country	US
Kind code	B2
Filing date	Jan 31, 2014
Priority date	Mar 15, 2013
Publication date	Aug 30, 2016
Grant date	Aug 30, 2016

Abstract

A symmetric hyperbranched type silicone-modified polymerizable compound contains a compound represented by the following general formula (1). A hyperbranched type silicone-modified polymerizable compound has flexibility at the branched skeleton itself than the conventional ones, and reactivity of a polymerizable functional group is good and it is positionally and sterically symmetric, while it has a highly branched structure having siloxane chains.

[(R A R B ) 2 CHOCH 2 ] 2 CHOR C c R D   (1)

R A represents a monovalent linear, branched or cyclic siloxane chain; R B represents a divalent hydrocarbonylene methylene ether group represented by —CH 2 CR b1 R b2 (CR b3 R b4 ) n1 OCH 2 —, each of R b1 , R b2 , R b3 and R b4 may be the same or different from each other and represents a hydrogen atom or a linear, branched or cyclic hydrocarbon group having 1 to 10 carbon atoms which may be bonded to each other, “n1” represents an integer selected from 0 to 10; R C , a divalent linking group; “c”, 0 or 1; and R D , an unsaturated polymerizable functional group.

First claim

The invention claimed is:

1. A symmetric hyperbranched type silicone-modified polymerizable compound which comprises a compound represented by the following general formula (1),
[(R A R B ) 2 CHOCH 2 ] 2 CHOR C c R D   (1)

wherein R A represents a monovalent linear, branched or cyclic siloxane chain;

R B represents a divalent hydrocarbonylene methylene ether group represented by —CH 2 CR b1 R b2 (CR b3 R b4 ) n1 OCH 2 —, each of R b1 , R b2 , R b3 and R b4 may be the same or different from each other and represents a hydrogen atom or a linear, branched or cyclic hydrocarbon group having 1 to 10 carbon atoms which may be bonded to each other, “n1” represents an integer selected from 0 to 10; R C represents a divalent linking group; “c” represents 0 or 1; and R D represents an unsaturated polymerizable functional group.

2. The symmetric hyperbranched type silicone-modified polymerizable compound according to claim 1 , wherein in the divalent hydrocarbonylene methylene ether group represented by R B in the general formula (1), “n1” represents an integer selected from 1 to 10, and when “n1” represents 1, R b1 represents a hydrocarbon group having 1 to 10 carbon atoms and R b2 represents a hydrogen atom.

3. The symmetric hyperbranched type silicone-modified polymerizable compound according to claim 1 , wherein the divalent linking group represented by R C in the general formula (1) is any of linking groups selected from divalent linking groups represented by —XR Y y R Z O—, —XR Y y CR Z′ R Z″ O—, and an oligoalkylene oxy group having a repeating unit whose number of repetition is an integer of 1 to 10, the repeating unit having 2 to 10 carbon atoms,
wherein X represents any one selected from —CH 2 —, —C(═O)— and —C(═S)—, R Y represents a divalent functional group containing 0 or 1 atom selected from a nitrogen atom, an oxygen atom, a sulfur atom or a carbon atom, R Z represents a linear, branched or cyclic alkylene group having 2 to 10 carbon atoms which may be substituted by an oxygen atom(s), “y” represents an integer selected from 0 or 1, R Z′ and R Z″ each represent an alkyl group having 1 to 10 carbon atoms.

4. The symmetric hyperbranched type silicone-modified polymerizable compound according to claim 2 , wherein the divalent linking group represented by R C in the general formula (1) is any of linking groups selected from divalent linking groups represented by —XR Y y R Z O—, —XR Y y CR Z′ R Z″ O—, and an oligoalkylene oxy group having a repeating unit whose number of repetition is an integer of 1 to 10, the repeating unit having 2 to 10 carbon atoms,
wherein X represents any one selected from —CH 2 —, —C(═O)— and —C(═S)—, R Y represents a divalent functional group containing 0 or 1 atom selected from a nitrogen atom, an oxygen atom, a sulfur atom or a carbon atom, R Z represents a linear, branched or cyclic alkylene group having 2 to 10 carbon atoms which may be substituted by an oxygen atom(s), “y” represents an integer selected from 0 or 1, R Z′ and R Z″ each represent an alkyl group having 1 to 10 carbon atoms.

5. A process for preparing the symmetric hyperbranched type silicone-modified polymerizable compound according to claim 1 ,
a modularized preparation method of which comprises subjecting a compound represented by the following general formula (2) and an intermediate represented by the following general formula (3) to a hydrosilylation reaction to prepare the compound represented by the general formula (1),
R A′   (2)

wherein R A′ represents a linear, branched or cyclic siloxane having one reactive hydrogen group in the molecule,
(R B′ 2 CHOCH 2 ) 2 CHOR C c R D   (3)

wherein R B′ represents a monovalent hydrocarbonylene methylene ether group having a double bond at the terminal thereof and represented by CH 2 ═CR b1 (CR b3 R b4 ) n1′ OCH 2 —, where R b1 , R b3 and R b4 have the same meanings as defined above, “n1′” represents an integer selected from 0 to 10; and R C , “c” and R D have the same meanings as defined above.

6. The modularized preparation method according to claim 5 , wherein “n1′” in the general formula (3) is an integer selected from 1 to 10.

7. The modularized preparation method according to claim 5 , wherein a catalyst is used in the hydrosilylation reaction, and the compound represented by the general formula (2) is used in an amount of 0.80 to 1.00 mole % based on the terminal alkenyl group of the intermediate represented by the general formula (3).

8. The modularized preparation method according to claim 6 , wherein a catalyst is used in the hydrosilylation reaction, and the compound represented by the general formula (2) is used in an amount of 0.80 to 1.00 mole % based on the terminal alkenyl group of the intermediate represented by the general formula (3).

9. The modularized preparation method according to claim 7 , wherein the catalyst to be used in the hydrosilylation reaction is a transition metal catalyst.

10. The modularized preparation method according to claim 8 , wherein the catalyst to be used in the hydrosilylation reaction is a transition metal catalyst.

11. The modularized preparation method according to claim 9 , wherein the transition metal catalyst is a platinum catalyst.

12. The modularized preparation method according to claim 10 , wherein the transition metal catalyst is a platinum catalyst.

13. The modularized preparation method according to claim 5 , wherein the intermediate represented by the general formula (3) is prepared by reacting the compound represented by the following general formula (4) and the compound represented by the following general formula (5) or the compound represented by the following general formula (6),
(R B′ 2 CHOCH 2 ) 2 CHOH  (4)

wherein R B′ has the same meaning as defined above,
R C′ R D   (5)

wherein R D has the same meaning as defined above, and R C′ represents a monovalent reactive group,
R D′   (6)

wherein R D′ represents an unsaturated polymerizable compound having a reactive functional group.

14. The modularized preparation method according to claim 13 , wherein the monovalent reactive group represented by R c in the general formula (5) is any of the reactive group selected from a monovalent reactive group represented by X═R Y′ R Z O—, T-X—R Y y R Z O—, X═R Y′ CR Z′ R Z″ O—, T-X—R Y y CR Z′ R Z″ O—, and an oligoalkyleneoxy group having a repeating unit whose number of repetition is an integer of 1 to 10, the repeating unit having 2 to 10 carbon atoms, which has a reactive group at the one terminal,
wherein X, R Y , R Z , “y”, R Z′ and R Z″ have the same meanings as defined above, R Y′ represents a trivalent functional group containing 0 or 1 of any atom selected from a nitrogen atom, an oxygen atom, a sulfur atom and a carbon atom, and T represents a hydroxyl group or any atom selected from a chlorine atom and a bromine atom.

15. The modularized preparation method according to claim 13 , wherein R D in the general formula (5) is a monovalent unsaturated polymerizable functional group selected from any of an acrylic group, a methacrylic group, an alkynyl group, a styryl group, an indenyl group, an alkenyl group, a cycloalkenyl group, a norbornyl group, a conjugated or non-conjugated alkadiene group and a vinyl ether group each of which may contain a linear, branched or cyclic substituent having 1 to 10 carbon atoms which contains a hetero atom(s).

16. The modularized preparation method according to claim 14 , wherein R D in the general formula (5) is a monovalent unsaturated polymerizable functional group selected fro

Assignees

• Shinetsu Chemical Co

Inventors

• Hattori Hatsuhiko

Classifications

• C08G77/38

  Polysiloxanes modified by chemical after-treatment · CPC title

• C07F7/0849 Primary

  Chemistry & Metallurgy · mapped topic

• C08G77/08

  characterised by the catalysts used · CPC title

• C08F290/068

  Polysiloxanes · CPC title

• C08G83/005

  Hyperbranched macromolecules · CPC title