Silicon-terminated organo-metal compounds and processes for preparing the same

Patent metadata

Field	Value
Publication number	US-2021002315-A1
Application number	US-201916982520-A
Country	US
Kind code	A1
Filing date	Mar 18, 2019
Priority date	Mar 19, 2018
Publication date	Jan 7, 2021
Grant date	—

Abstract

The present disclosure is directed to a silicon-terminated organo-metal composition comprising a compound of formula (I). Embodiments relate to a process for preparing the silicon-terminated organo-metal composition comprising the compound of formula (I), the process comprising combining starting materials comprising (A) a vinyl-terminated silicon-based compound and (B) a chain shuttling agent, thereby obtaining a product comprising the silicon-terminated organo-metal composition. In further embodiments, the starting materials of the process may further comprise (C) a solvent.

First claim

What is claimed is:

1 . A silicon-terminated organo-metal composition comprising a compound of formula (I):

wherein:
MB is a trivalent metal selected from the group consisting of Al, B, and Ga;
each Z is independently a substituted or unsubstituted divalent C 1 to C 20 hydrocarbyl group that is linear, branched, or cyclic;
each subscript m is a number from 1 to 100,000;
each J is independently a hydrogen atom or a monovalent C 1 to C 20 hydrocarbyl group;
each R A , R B , and R C is independently a hydrogen atom, a substituted or unsubstituted C 1 to C 10 monovalent hydrocarbyl group that is linear, branched, or cyclic, a vinyl group, an alkoxy group, or one or more siloxy units selected from M, D, and T units:

wherein each R is independently a hydrogen atom, a substituted or unsubstituted C 1 to C 10 monovalent hydrocarbyl group that is linear, branched, or cyclic, a vinyl group, or an alkoxy group;
two or all three of R A , R B , and R C of a silicon atom may optionally be bonded together to form a ring structure when two or all three of R A , R B , and R C of the silicon atom are each independently one or more siloxy units selected from D and T units.

2 . The composition of claim 1 , wherein MB is Al.

3 . The composition of claim 1 , wherein each J is a hydrogen atom.

4 . The composition of claim 1 , wherein each Z is an unsubstituted divalent C 1 to C 10 hydrocarbyl group that is linear.

5 . The composition of claim 1 , wherein each subscript m is a number from 1 to 1,000.

6 . The composition of claim 1 , wherein at least one of R A , R B , and R C of each silicon atom is a hydrogen atom or a vinyl group.

7 . The composition of claim 1 , wherein each of at least two of R A , R B , and R C of each silicon atom is a linear C 1 to C 10 monovalent hydrocarbyl group.

8 . The composition of claim 1 , wherein each of at least two of R A , R B , and R C of each silicon atom is a methyl group.

9 . A process for preparing a silicon-terminated organo-metal composition, the process comprising 1) combining starting materials comprising (A) a vinyl-terminated silicon-based compound and a (B) chain shuttling agent, thereby obtaining a product comprising the silicon-terminated organo-metal composition.

10 . The process of claim 9 , wherein the starting materials further comprise (C) a solvent.

11 . The process of claim 9 , wherein the (A) vinyl-terminated silicon-based compound has the formula (II):

wherein:
Z is a substituted or unsubstituted divalent C 1 to C 20 hydrocarbyl group that is linear, branched, or cyclic;
R A , R B , and R C are each independently a hydrogen atom, a substituted or unsubstituted C 1 to C 10 monovalent hydrocarbyl group that is linear, branched, or cyclic, a vinyl group, an alkoxy group, or one or more siloxy units selected from M, D, and T units:

wherein each R is independently a hydrogen atom, a substituted or unsubstituted C 1 to C 10 monovalent hydrocarbyl group that is linear, branched, or cyclic, a vinyl group, or an alkoxy group; and
two or all three of R A , R B , and R C may optionally be bonded together to form a ring structure when two or all three of R A , R B , and R C are each independently one or more siloxy units selected from D and T units.

12 . The process of claim 11 , wherein at least one of R A , R B , and R C is a hydrogen atom or a vinyl group.

13 . The process of claim 11 , wherein each of at least two of R A , R B , and R C is a linear C 1 to C 10 monovalent hydrocarbyl group.

14 . The process of claim 13 , wherein each of at least two of R A , R B , and R C is a methyl group.

15 . The process of claim 11 , wherein Z is an unsubstituted divalent C 1 to C 10 hydrocarbyl group that is linear.

16 . The process of claim 9 , wherein the vinyl-terminated silicon-based compound is selected from the group consisting of 7-octenyldimethylsilane, 7-octenyldimethylvinylsilane, and mixtures thereof.

17 . The process of claim 9 , wherein the (B) chain shuttling agent has the formula Y 3 MB, where MB is Al, and each Y is independently a hydrocarbyl group of 1 to 20 carbon atoms.

18 . The process of claim 9 , wherein step 1) is performed at a temperature from 100 to 150° C.

19 . The process of claim 18 , wherein step 1) is performed for a duration of 1 to 10 hours.

20 . The process of claim 9 , wherein the process, after step 1), further comprises forming a silicon-terminated polymeryl-metal by a process comprising combining starting materials comprising:
i) the silicon-terminated organo-metal composition of any of claims 1 to 8 , ii) a procatalyst, iii) an activator, iv) at least one olefin monomer, and
an optional solvent.

Assignees

• Dow Global Technologies Llc

Inventors

• Sun Lixin
• Hustad Phillip D

Classifications

• C08F110/02

  Ethene · CPC title

• C08F4/6421

  Titanium tetrahalides with organo-aluminium compounds · CPC title

• C07F19/00 Primary

  Metal compounds according to more than one of main groups C07F1/00 - C07F17/00 · CPC title

• C08F8/42 Primary

  Introducing metal atoms or metal-containing groups · CPC title

• C08F4/64144

  NN(R)C · CPC title