Silsesquioxane

Patent metadata

Field	Value
Publication number	US-12091527-B2
Application number	US-202017089837-A
Country	US
Kind code	B2
Filing date	Nov 5, 2020
Priority date	May 7, 2018
Publication date	Sep 17, 2024
Grant date	Sep 17, 2024

Abstract

A silsesquioxane compound represented by the following formula (I): (R a SiO 1.5 ) n , wherein R a is, each independently at each occurrence, R b or R c ; provided that at least one R a is R b ; R b is —R 1 —CF 2 —R 2 —R 3 ; R 1 is a divalent group; R 2 is a divalent polymer chain; R 3 is a halogen atom or a hydrogen atom; R c is a hydrogen atom, an alkyl group, a phenyl group, or —(OSiR 15 2 ) j —R 15 ; R 15 is, each independently at each occurrence, a hydrogen atom or an alkyl group having 1 to 6 carbon atoms; j is, each independently at each occurrence, an integer of 1 to 3; and n is an arbitrary integer.

First claim

The invention claimed is:

1. A silsesquioxane compound represented by the following formula (I):
(R a SiO 1.5 ) n
wherein
R a is, each independently at each occurrence, R b or R c ;
provided that at least one R a is R b ;
R b is —R 1 —CF 2 —R 2 —R 3 ;
R 1 is —(CF 2 ) s1 —or —(CF 2 ) t1 O(CF 2 ) t2— ;
s1 is an integer of 2 to 10;
t1 and t2 are each independently an integer of 2 to 6;

R 2 is a divalent polymer chain;
R 3 is a halogen atom or a hydrogen atom;
R c is a hydrogen atom, an alkyl group, a phenyl group, or —(OSiR 15 2 ) j— R 15 ;
R 15 is, each independently at each occurrence, a hydrogen atom or an alkyl group having 1 to 6 carbon atoms;
j is, each independently at each occurrence, an integer of 1 to 3; and
n is an integer of 4 or more.

2. The silsesquioxane compound according to claim 1 , wherein R 3 is bromine or iodine.

3. The silsesquioxane compound according to claim 1 , wherein the divalent polymer chain in R 2 is a divalent fluorine-containing polymer chain.

4. The silsesquioxane compound according to claim 1 , wherein the divalent polymer chain in R 2 is composed of a monomer unit derived from monofluoroethylene, 1,1-difluoroethylene, 1,3-difluoroethylene, trifluoroethylene, tetrafluoroethylene, 1,1,1,2-tetrafluoro-2-propylene, hexafluoropropylene, perfluoro(alkylvinyl ether), chlorotrifluoroethylene, vinylidene fluoride, (meth)acrylic acid, (meth)acrylic acid ester, styrene, vinyl acetate, vinyl chloride, vinylidene chloride, or 1,3-butadiene.

Assignees

• Univ Ochanomizu
• Daikin Ind Ltd

Inventors

• Yajima Tomoko
• Sano Moeka
• Kanbara Tadashi
• Noguchi Tsuyoshi

Classifications

• C08L33/10

  Homopolymers or copolymers of methacrylic acid esters · CPC title

• C08F20/28

  containing no aromatic rings in the alcohol moiety · CPC title

• C08F20/24

  containing perhaloalkyl radicals · CPC title

• Y02T10/86

  Optimisation of rolling resistance, e.g. weight reduction · CPC title

• C08G77/42

  Block-or graft-polymers containing polysiloxane sequences (polymerising aliphatic unsaturated monomers on to a polysiloxane C08F283/12) · CPC title