Patent EP0206717A2 successfully refreshed from Google Patents.
EP0206717A2
Expired / Lapsed
EP
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Coating compositions
Assignee: Nissan Chemical Corp
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Filing: 1986-06-16
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Granted: —
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Expires: 2006-06-16
Abstract
Abstract Coating or binding agent to be used for paints, adhesives etc. and for coating molds, ceramic and metallic articles, above all ceramic substrates for I.C., having practically sufficient storage stability and being able to form transparent and hard film on substratum surface readily by drying and provide calcinated film without causing any cracking. Such composition is obtained by reacting an organic silica of 5-200 m mu particle size dispersed in an organic solvent in 1-50 weight % as SiO2, in the amount of 100 parts by weight as SiO2; an alkyl silicate in the amount of 20-200 parts by weight as SiO2; and water in the amount of 0.5-7.0 mol relative to 1 gram atom of silicon in said alkyl silicate.
Inventors
- 👤 Kenichi C/O Nissan Chemical Ind. Limited Okubi
- 👤 Makoto C/O Nissan Chemical Ind. Limited Tsugeno
- 👤 Tatsuya C/O Nissan Chemical Ind. Limited Nogami
- 👤 Takashi C/O Nissan Chemical Ind. Limited Takei
- 👤 Kieko C/O Nissan Chemical Ind. Limited Tasaki
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 09:42
CPC Classifications
H; H10; H10W; H10W70/00; H10W70/60; H10W70/67; H10W70/69; H10W70/692; C; C04; C04B; C04B28/00; C04B28/24; C04B41/00; C04B41/009; C04B41/45; C04B41/50; C04B41/5025; C04B41/5035; C04B41/80; C04B41/81; C04B41/85; C04B41/87; C04B2111/00; C04B2111/00474; C04B2111/00482; C04B2111/00844
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
95 words
Coating composition to be obtained by reacting 100 parts by weight as SiO 2 of an organosilica-sol, which contains colloidal silica of 5 - 200 mµ, and more particularly of 50 - 100 mµ, particle size dispersed in an organic solvent in the amount of 1 - 50 weight % as SiO 2 , in an amount of 100 weight % as Si0 2 , 20 - 200 weight parts as Si0 2 of an alkyl silicate; and 0.5 - 7 mol of water relative to 1 gram atom of silicon in said alkyl silicate.
Claim 2
Dependent Claim
95 words
Coating composition to be obtained by reacting 100 parts by weight as SiO 2 of an organosilica-sol, which contains colloidal silica of 5 - 200 mµ, and more particularly of 50 - 100 mµ, particle size dispersed in an organic solvent in the amount of 1 - 50 weight % as SiO 2 , in an amount of 100 weight % as Si0 2 , 20 - 200 weight parts as Si0 2 of an alkyl silicate; and 0.5 - 7 mol of water relative to 1 gram atom of silicon in said alkyl silicate.
Claim 3
Dependent Claim
32 words
Coating composition as claimed in Claim 1, in which said organic solvent is any selected from a class consisting of alcohols, ketones, ethers, esters, aliphatic and aromatic hydrocarbons and homogeneous mixtures thereof.
Claim 4
Dependent Claim
51 words
Coating composition as claimed in Claim 2, in which said organic solvent is any selected from a class consisting of methanol, ethanol, isopropanol, butanol, acetone, methyl ethyl ketone, methyl isobutyl ketone, diisopropyl ether, methyl cellosolve, ethyl cellosolve, propyl cellosolve, methyl acetate, ethyl acetate, butyl acetate, hexane, heptane, benzene, toluene and xylene.
Claim 5
Dependent Claim
56 words
Coating composition as claimed in any of said Claims I - 3, in which said alkyl silicate is any selected from a class consisting of tetramethyl orthosilicate, tetraethyl orthosilicate, tetra-n-propyl orthosilicate, tetra-i-propyl orthosilicate, tetra-n-butyl-orthosilicate, tetra-sec-butyl orthosilicate, methyl polysilicate of 2 - 10 condensation degree, ethyl polysilicate of 2 - 10 condensation degree, and a mixture thereof.
Claim 6
Dependent Claim
35 words
Coating composition as claimed in any of said Claims 1 - 4, in which the reaction is carried out at a temperature between 40°C and a boiling point of said solvent under the atmospheric pressure.
Claim 7
Dependent Claim
26 words
Coating composition as claimed in any of said Claims 1 - 5, which comprises 0.1 - 15 weight % Si0 2 derived from said alkyl silicate.
Claim 8
Dependent Claim
58 words
Coating composition as claimed in any of said Claims 1 - 6, in which the reaction is carried out in the presence of a catalyst selected from a class consisting of hydrogen chloride, sulphuric acid, nitric acid, phosphoric acid, boric acid, formic acid, acetic acid, oxalic acid, benzoic acid, methanesulfonic acid, paratoluene sulfonic acid and an mixture thereof.
Claim 9
Dependent Claim
17 words
Ceramic substrate coated with coating agent according to any of Claims 1 - 7, dried and calcinated.
Claim 10
Dependent Claim
36 words
Ceramic substrate as claimed in Claim 8, in which said substrate is made of any selected from a class consisting of alumina, berylia, magnesia, mullite, steatite, forsterite, porcelain enameled, silicon nitride, aluminum nitride and silicon carbide.
References Cited (Backward Citations)
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