Catalytic coating composition for cooking devices
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IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B01J-029/00
B01J-029/10
B01J-029/20
출원번호
US-0553425
(1975-02-26)
발명자
/ 주소
Stiles Alvin Barber (Wilmington DE)
출원인 / 주소
E. I. Du Pont de Nemours and Company (Wilmington DE 02)
인용정보
피인용 횟수 :
32인용 특허 :
0
초록▼
A catalyst composition for coating surfaces of cooking devices exposed to cooking residues is disclosed. The composition contains (1) from about 10-94% by weight of a catalytic metal oxide selected from the group consisting of the oxides of cobalt, chromium, iron, nickel, manganese, copper, zinc, th
A catalyst composition for coating surfaces of cooking devices exposed to cooking residues is disclosed. The composition contains (1) from about 10-94% by weight of a catalytic metal oxide selected from the group consisting of the oxides of cobalt, chromium, iron, nickel, manganese, copper, zinc, the rare earths, and mixtures thereof in the form of particles having a size of less than 35 microns and said oxide having a surface area of about 5-150 square meters per gram, with the proviso that when the oxide is manganese oxide from 0-80% by weight of said oxide can have a surface area in excess of about 150 square meters per gram; (2) at least 1% by weight on a dry basis of an alkaline silicate, said alkaline silicate being in the form of an aqueous solution; and (3) from about 0-20% by weight of a carbonate or hydroxide of one or more metals of said catalytic metal oxides when the catalytic metal oxide of (1) is manganese oxide and from about 1-20% by weight of the carbonate or hydroxide when the catalytic metal oxide of (1) is other than manganese oxide. Surfaces coated with the disclosed composition effect rapid decomposition and oxidation of cooking residues at temperatures of about 204°C. (400°F.) and lower.
대표청구항▼
A catalyst composition for coating the surfaces of cooking devices exposed to cooking residues, said composition containing 1. from about 10-94% by weight of a catalytic metal oxide selected from the group consisting of the oxides of cobalt, chromium, iron, nickel, manganese, copper, zinc, the rare
A catalyst composition for coating the surfaces of cooking devices exposed to cooking residues, said composition containing 1. from about 10-94% by weight of a catalytic metal oxide selected from the group consisting of the oxides of cobalt, chromium, iron, nickel, manganese, copper, zinc, the rare earths and mixtures thereof in the form of particles having a size of less than 35 microns and a surface area of about 5-150 square meters per gram with the proviso that when the oxide is manganese oxide, from 0-80% by weight of said oxide can have a surface area in excess of about 150 square meters per gram; 2. at least 1% by weight on a dry basis of an alkaline silicate selected from the group consisting of sodium silicate, lithium silicate, potassium silicate, silicates of organic bases having a basic dissociation constant greater than 103 and mixtures thereof, said alkaline silicate being in the form of an aqueous solution; and 3. from about 0-20% by weight of a carbonate or hydroxide of one or more metals of said catalytic metal oxides when the catalytic metal oxide of (1) is manganese oxide and from about 1-20% by weight of said carbonate or hydroxide when the catalytic metal oxide of (1) is other than manganese oxide.
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