# US 11,299,628 B2 · Organopolysiloxane composition

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- Number: US 11,299,628 B2
- Document ID: US11299628B2
- Status: Granted
- Kind: B2
- Application number: 16/764,198
- Filed: 2018-11-06
- Published: 2020-12-17
- Granted: 2022-04-12
- Earliest claimed: 2017-11-15
- Assignees: Shin-Etsu Chemical Co., Ltd.
- Applicants: Shin-Etsu Chemical Co., Ltd.
- Inventors: Daisuke Noda; Koji Sakuta
- Web page: https://patentgrep.com/patent/US11299628B2

## CPC

- C08G 77/388: containing nitrogen
- C08L 83/04: Polysiloxanes
- C08G 77/12: containing silicon bound to hydrogen
- C08G 77/20: containing silicon bound to unsaturated aliphatic groups
- C08K 5/5475: containing at least one C≡N bond
- C08L 2205/025: containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
- C08L 2205/03: containing three or more polymers in a blend
- C08G: MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06)
- C08K: Use of inorganic or non-macromolecular organic substances as compounding ingredients (paints, inks, varnishes, dyes, polishes, adhesives C09)

## Abstract

Provided is an organopolysiloxane composition, comprising: (A) an organopolysiloxane having at least two silicon atom-bonded alkenyl groups in each molecule, (B) an organohydrogenpolysiloxane having at least two silicon atom-bonded hydrogen atoms in each molecule, (C) a platinum catalyst, and (D) a specific isocyanide compound.

## Claims

### Claim 1

An organopolysiloxane composition comprising:
(A) an organopolysiloxane having at least two silicon-bonded alkenyl groups per molecule,
(B) an organohydrogenpolysiloxane having at least two silicon-bonded hydrogen atoms per molecule,
(C) a platinum hydrosilylation catalyst, and
(D) a compound having the formula (1-1) or (1-2):
R1—Si(R1)a{[X—Si(R1)2]b—R1}c (1-1)
R1—Si(R1)a{(Zi)}c (1-2)
wherein R1 is each independently a monovalent organic group selected from an optionally substituted C1-C30 monovalent organic group which may be separated by at least one atom selected from oxygen, nitrogen, sulfur and phosphorus, and an organic group having the formula (2):
—Y—NC (2)
wherein Y is an optionally substituted C1-C30 divalent organic group which may be separated by at least one atom selected from oxygen, nitrogen, sulfur and phosphorus, one to three of all groups R1 being an organic group of formula (2),
X is each independently an oxygen atom, or an optionally substituted C1-C30 divalent organic group which may be separated by at least one atom selected from oxygen, nitrogen, sulfur and phosphorus,
a is an integer of 0 to 3, c is an integer of 0 to 3, a+c is 3, b is an integer of 1 to 300,
Zi is a group of the formula:
—X—Si(R1)j(Zi+1)(3−j)
wherein i indicative of a hierarchy is an integer of 1 to 10, j is an integer of 0 to 3, j associated with at least one of all hierarchies is 0 or 1, the lowest hierarchy is j=3, or
a cyclic polysiloxane compound in which a cyclic structure is formed of repeating unit of —OSi(R1)2—, wherein R1 is as defined above.

### Claim 2 (depends on 1)

The organopolysiloxane composition of claim 1 wherein component (A) is an organopolysiloxane having the average compositional formula (3):
R2dR3eSiO(4−d−e)/2 (3)
wherein R2 is each independently an alkenyl group, R3 is each independently a silicon-bonded organic group other than the alkenyl group, d and e are numbers in the range: 0<d≤3, 0≤e<3, and 0<d+e≤3, and selected such that at least two alkenyl groups R2 are contained per molecule, and
component (B) is an organohydrogenpolysiloxane having the average compositional formula (4):
R4gHhSiO(4−g−h)/2 (4)
wherein R4 is each independently an organic group other than silicon-bonded hydrogen, g and h are numbers in the range: 0<g<3, 0<h<3, and 0<g+h≤3, and selected such that at least two silicon-bonded hydrogen atoms are contained per molecule.

### Claim 3 (depends on 1)

The organopolysiloxane composition of claim 1 wherein in formula (1-1), a is 0, 1 or 2.

### Claim 4 (depends on 1)

The organopolysiloxane composition of claim 1 wherein in formula (1-1) or (1-2), or the repeating unit of —OSi(R1)2— of the cyclic polysiloxane compound, one of all groups R1 is an organic group of formula (2).

### Claim 5 (depends on 1)

The organopolysiloxane composition of claim 1 wherein in formula (1-1) or (1-2), X is oxygen.

### Claim 6 (depends on 1)

The organopolysiloxane composition of claim 1 wherein in formula (2), Y is a C1-C30 divalent hydrocarbon group.

### Claim 7 (depends on 1)

The organopolysiloxane composition of claim 1 wherein component (D) is present in an amount to give 2 to 20 equivalents of the group of formula (2) per platinum atom in component (C).

### Claim 8 (depends on 1)

The organopolysiloxane composition of claim 1 wherein in formula (1-1) or (1-2), or the repeating unit of —OSi(R1)2— of the cyclic polysiloxane compound, R1 is each independently a monovalent organic group selected from C1-C30 alkyl groups, C2-C20 alkenyl groups, C2-C20 alkynyl groups, C6-C30 aryl groups, C7-C30 aralkyl groups, C1-C30 alkoxy groups and an organic group having the formula (2):
—Y—NC (2)
wherein Y is a C1-C30 alkylene group which may be straight, branched or cyclic, a C6-C30 arylene group, or a C7-C30 aralkylene group.

### Claim 9 (depends on 1)

The organopolysiloxane composition of claim 1 wherein in formula (1-1), X is each independently an oxygen atom, a C1-C30 alkylene group, a C6-C30 arylene group, or a C7-C30 aralkylene group.