JP-2026075318-A - Organopolysiloxane composition

Abstract

[Problem] To provide an organopolysiloxane composition with improved fluidity and good handling properties. [Solution] An organopolysiloxane composition comprising a silicone resin represented by the following general formula (1) and an additive that improves the fluidity of the silicone resin. (In the formula, R1 independently represents a substituted or unsubstituted divalent hydrocarbon group having 1 to 20 carbon atoms, which may contain heteroatoms; R2 independently represents a hydrogen atom, a methyl group, or an ethyl group; and a is an integer from 2 to 70.) [Selection Diagram] None

Inventors

• 石井 大介
• 入學 武
• 清森 歩

Assignees

• 信越化学工業株式会社

Dates

Publication Date

20260508

Application Date

20241022

Claims (15)

1. An organopolysiloxane composition comprising a silicone resin represented by the following general formula (1) and an additive that improves the fluidity of the silicone resin. (In the formula, R1 independently represents a substituted or unsubstituted divalent hydrocarbon group having 1 to 20 carbon atoms, which may contain heteroatoms; R2 independently represents a hydrogen atom, a methyl group, or an ethyl group; and a is an integer from 2 to 70.)
2. The organopolysiloxane composition according to claim 1, wherein the non-volatile content is 90.00% by mass or more.
3. The organopolysiloxane composition according to claim 1, wherein the non-volatile content of the silicone resin is 90.00% by mass or more.
4. The organopolysiloxane composition according to claim 1, wherein the content of the additive is 1 to 100% by mass relative to the silicone resin.
5. The organopolysiloxane composition according to claim 1, wherein the silicone resin is in powder form.
6. The organopolysiloxane composition according to claim 1, wherein the additive is one or more selected from hydrocarbons, fatty acids, higher alcohols, fatty acid amides, metal soaps, esters, silica particles, polyhydric alcohols, and water-insoluble organopolysiloxanes represented by the following general formula (2). (In the formula, R3 independently represents an unsubstituted monovalent hydrocarbon group having 1 to 20 carbon atoms, and b is an integer from 2 to 70.)
7. The organopolysiloxane composition according to claim 6, wherein the hydrocarbon is one or more selected from liquid paraffin, paraffin wax, and synthetic polyethylene wax.
8. The organopolysiloxane composition according to claim 6, wherein the fatty acid is one or more selected from stearic acid, arachidic acid, and behenic acid.
9. The organopolysiloxane composition according to claim 6, wherein the higher alcohol is one or more selected from stearyl alcohol, myristyl alcohol, oleyl alcohol, lauryl alcohol, behenyl alcohol, and hexyldecanol.
10. The organopolysiloxane composition according to claim 6, wherein the fatty acid amide is one or more selected from stearic acid amide, oleic acid amide, erucic acid amide, methylenebisstearic acid amide, and ethylenebisstearic acid amide.
11. The organopolysiloxane composition according to claim 6, wherein the metal soap is one or more selected from lithium stearate, potassium stearate, calcium stearate, magnesium stearate, aluminum stearate, barium stearate, zinc stearate, calcium laurate, barium laurate, and zinc laurate.
12. The organopolysiloxane composition according to claim 6, wherein the ester is one or more selected from glycerin monostearate, glycerin monooleate, and butyl stearate.
13. The organopolysiloxane composition according to claim 6, wherein the silica particles are one or more selected from dry silica and wet silica.
14. The organopolysiloxane composition according to claim 6, wherein the polyhydric alcohol is one or more selected from polyethylene glycol, mannitol, and Pluronic®-type nonionic surfactants.
15. The organopolysiloxane composition according to claim 6, wherein the water-insoluble organopolysiloxane represented by formula (2) is one or more selected from hexadecylsilanetriol homopolymer, decylsilanetriol homopolymer, octylsilanetriol homopolymer, and hexylsilanetriol homopolymer.

Description

This invention relates to organopolysiloxane compositions. Organosilicon compounds having a hydrolyzable silyl group and an organic group allow for the bonding of organic and inorganic materials, which are normally difficult to bond, because the silanol group generated by the hydrolysis of the hydrolyzable silyl group forms a covalent bond with the hydroxyl group on the surface of the inorganic material, and the organic group further reacts with the organic material. This makes it possible to impart properties such as heat resistance, water resistance, weather resistance, improved mechanical strength, adhesion, dispersibility, hydrophobicity, and corrosion resistance to organic-inorganic composite materials. By utilizing these properties, the organosilicon compounds described above are used in a wide range of fields and applications, including silane coupling agents, resin additives, surface treatment agents, fiber treatment agents, adhesives, paint additives, and polymer modifiers. Among the organosilicon compounds mentioned above, aminosilane compounds, which are organosilicon compounds containing an amino group, can improve the adhesion of organic-inorganic composite materials because the amino group exhibits high reactivity with various organic and inorganic materials. Examples of such aminosilane compounds include 3-aminopropyltrimethoxysilane (Patent Document 1). Furthermore, an example of an organopolysiloxane obtained by hydrolysis of this aminosilane compound is 3-aminopropylsilanetriol homopolymer (Patent Document 2), which is a type of silicone resin. Japanese Patent Application Publication No. 10-17578U.S. Patent No. 2020/0068897 The present invention will be described in detail below. The organopolysiloxane composition of the present invention comprises a silicone resin represented by the following general formula (1) (hereinafter referred to as "silicone resin (1)") and an additive that improves the fluidity of silicone resin (1) (hereinafter simply referred to as "additive"). In general formula (1), R1 independently represents a substituted or unsubstituted divalent hydrocarbon group having 1 to 20 carbon atoms, preferably 1 to 10 carbon atoms, and more preferably 1 to 8 carbon atoms, which may contain heteroatoms. The divalent hydrocarbon group R1 above may be linear, branched, or cyclic. Specific examples include methylene, dimethylene, trimethylene, tetramethylene, pentamethylene, hexamethylene, heptamethylene, octamethylene, nonamethylene, decamethylene, undecamethylene, dodecamethylene, tridecamethylene, tetradecamethylene, pentadecamethylene, hexadecamethylene, heptadecamethylene, octadecamethylene, nonadecamethylene. Linear alkylene groups such as eicosamethylene groups; branched alkylene groups such as isopropylene, isobutylene, sec-butylene, tert-butylene, isopentylene, isohexylene, isoheptylene, isooctylene, isononylene, isodecylene, isounddecylene, isododecylene, isotridecylene, isotetradecylene, isopentadecylene, isohexadecylen, isoheptadecylen, isooctadecylen, isononadecylene, isoicosilene groups, etc. Rucliene groups; cyclic alkylene groups such as cyclopropylene, cyclobutylene, cyclopentylene, cyclohexylene, cycloheptylene, cyclooctylene, cyclononylene, cyclodecylene, cycloundecylene, cyclododecylene, cyclotridecylene, cyclotetradecylene, cyclopentadecylene, cyclohexadecylene, cycloheptadecylene, cyclooctadecylene, cyclononadecilen, cycloicosilene, etc.; etenylene, propenylene Examples include alkenylene groups such as butenylene, pentenylene, hexenylene, heptenylene, octenylene, nonylene, decenylene, undecenylene, dodecenylene, tridecenylene, tetradecenylene, pentadecenylene, hexadecenylene, heptadecenylene, octadecenylene, nonadecenylene, and eicocenylene groups; arylene groups such as phenylene and naphthylene groups; and aralkylene groups such as methylenephenylene and methylenephenylmethylene groups. Furthermore, divalent hydrocarbon groups containing the R1 heteroatom include alkyleneaminoalkylene groups, alkyleneoxyalkylene groups, alkylentioalkylene groups, and the like. These alkylene groups can be independently the same as those exemplified above for linear, branched, and cyclic alkylene groups. Furthermore, some or all of the hydrogen atoms in these divalent hydrocarbon groups may be substituted with other substituents. Specific examples of these substituents include alkoxy groups having 1 to 4 carbon atoms, such as methoxy, ethoxy, and (iso)propoxy groups; halogen atoms, such as fluorine, chlorine, and bromine; aryl groups, such as phenyl, tolyl, and xyl groups; aralkyl groups, such as benzyl and phenethyl groups; cyano, amino, ester, ether, carbonyl, acyl, and sulfide groups. One or more of these substituents may be used in combination. The substitution positions and number of substituents are not particularly limited. Among these, R1 is preferably an unsubstituted linear, branched, or cyclic alkylene group having 1 to 8 carbon atoms; an alkenylene group; an arylen