US4746568A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat-resistant coating composition and heat-resistant coat
Assignee: Honda Motor Co Ltd
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Filing: 1987-02-12
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Granted: 1988-05-24
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Expires: 2007-02-12
Abstract
Abstract A heat-resisting coating composition prepared by binding with a mixture of modified silicone resin and an aluminum chelate compound, pulverized inorganic material consisting essentially of a mixture of powder containing at least one member selected from the group consisting of aluminum phosphate, zinc molybdate and calcium carbonate, plate-shaped powder principally containing aluminum silicate or magnesium silicate, and metallic zinc powder. The composition exhibits excellent rust-preventing performance in a temperature range spreading from a low temperature to a high temperature, as a heat-resisting painting material for use on an exhaust pipe connected with a motor car engine. Upon applying said heat-resisting coating composition onto a metal surface, it is effective for enhancing adhesion to preliminarily form fine protrusions having "turn-rounds" on the metal surface.
Inventors
- 👤 Tooru Matsumoto
- 👤 Satoshi Ishikawa
- 👤 Eiji Nakamura
- 👤 Tomio Izuoka
- 👤 Tomoyuki Okada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 03:53
CPC Classifications
C; C09; C09D; C09D183/00; C09D183/04; Y; Y10; Y10T; Y10T428/00; Y10T428/25; Y10T428/256; Y10T428/31504; Y10T428/31511; Y10T428/31529; Y10T428/31652; Y10T428/31663
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
251 words
A heat-resistant coat applied onto a metal surface provided with fine protrusions having overhanging portions, said coat being composed of a lower layer and an upper layer, wherein said lower layer is formed from a coating composition comprising: (a) 50-80% by weight of a pulverized inorganic material consisting essentially of (i) a mixture of powder particles consisting essentially of at least one compound selected from the group consisting of aluminum phosphate, zinc molybdate and calcium carbonate, (ii) plate-shaped powder particles consisting essentially of aluminum silicate or magnesium silicate, and (iii) metallic zinc powder, wherein the amount of the mixture of powder particles (i) is 20-55% by weight of the pulverized inorganic material, and the amount of metallic zinc powder is 40-70% by weight of the pulverized inorganic material; and (b) 20-50% by weight of a mixture of a modified silicone resin and an aluminum chelate compound selected from the group consisting of ethyl acetate aluminum di-isopropylate and aluminum tri-ethylacetoacetate, wherein the amount of aluminum chelate is 0.5-4% by weight of the mixture (b), and the modified silicone resin consists of 20-40% by weight of at least one resin selected from the group consisting of phenol resin, epoxy resin, acrylic resin and polyester resin and 80-60% by weight of a silicone resin; said pulverized inorganic material (a) being bound by said mixture (b) of modified silicone resin and aluminum chelate compound; and wherein said upper layer is formed from a heat resistant coating composition consisting essentially of silicone resin and metal oxides.
Claim 2
Dependent Claim
251 words
A heat-resistant coat applied onto a metal surface provided with fine protrusions having overhanging portions, said coat being composed of a lower layer and an upper layer, wherein said lower layer is formed from a coating composition comprising: (a) 50-80% by weight of a pulverized inorganic material consisting essentially of (i) a mixture of powder particles consisting essentially of at least one compound selected from the group consisting of aluminum phosphate, zinc molybdate and calcium carbonate, (ii) plate-shaped powder particles consisting essentially of aluminum silicate or magnesium silicate, and (iii) metallic zinc powder, wherein the amount of the mixture of powder particles (i) is 20-55% by weight of the pulverized inorganic material, and the amount of metallic zinc powder is 40-70% by weight of the pulverized inorganic material; and (b) 20-50% by weight of a mixture of a modified silicone resin and an aluminum chelate compound selected from the group consisting of ethyl acetate aluminum di-isopropylate and aluminum tri-ethylacetoacetate, wherein the amount of aluminum chelate is 0.5-4% by weight of the mixture (b), and the modified silicone resin consists of 20-40% by weight of at least one resin selected from the group consisting of phenol resin, epoxy resin, acrylic resin and polyester resin and 80-60% by weight of a silicone resin; said pulverized inorganic material (a) being bound by said mixture (b) of modified silicone resin and aluminum chelate compound; and wherein said upper layer is formed from a heat resistant coating composition consisting essentially of silicone resin and metal oxides.
Claim 3
Dependent Claim
62 words
A heat-resistant coat as claimed in claim 1, characterized in that said fine protrusions having overhanging portions are formed through the steps of blasting particles having corners and a diameter of 0.3 mm or less onto the metal surface with a strong pressure, and thereafter blasting spherical or rectangular particles having a diameter of 0.3 mm or less with a low pressure.
Claim 4
Dependent Claim
55 words
A heat-resisting coat as claimed in claim 1, characterized in that said modified silicone resin is prepared by compounding 20-40 weight % of at least one resin selected from the group consisting of phenol resin, epoxy resin, acrylic resin and polyester resin with silicone resin so as to amount to 100 weight % in total.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-05-24 | 1991-11-23 | 1992-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-05-24 | 1995-11-23 | 1996-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-05-24 | 1999-11-23 | 2000-05-24 | $7700.00 | Window Closed / Lapsed |