Epichlorohydrin-based product and process for manufacturing this product
First Claim
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1. A purified epichlorohydrin product produced by reaction between allyl chloride and a peroxide in water and methanol, during which reaction methyl glycidyl ether is produced in a contaminating amount, wherein said product comprises at least 99.9% by weight of epichlorohydrin;
- a total amount of chloro impurities of less than or equal to 150 ppm by weight and an amount of methyl glycidyl ether which is less than said contaminating amount.
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Abstract
Epichlorohydrin-based product containing at least 99.9% by weight of epichlorohydrin and a total amount of chloro impurities of less than or equal to 150 ppm by weight, and process for manufacturing this product by reaction of allyl chloride with a peroxide compound in the presence of water, a catalyst and a diluent in at least one reactor, and separation of the epichlorohydrin formed.
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Citations
24 Claims
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1. A purified epichlorohydrin product produced by reaction between allyl chloride and a peroxide in water and methanol, during which reaction methyl glycidyl ether is produced in a contaminating amount, wherein said product comprises at least 99.9% by weight of epichlorohydrin;
- a total amount of chloro impurities of less than or equal to 150 ppm by weight and an amount of methyl glycidyl ether which is less than said contaminating amount.
- View Dependent Claims (2, 3, 11, 17, 18)
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4. Process for manufacturing an epichlorohydrin-based product containing at least 99.9% by weight of epichlorohydrin and a total amount of chloro impurities of less than or equal to 150 ppm by weight, which comprises
a) reacting allyl chloride with a peroxide compound in the presence of water, a catalyst which is a titanium silicalite, and a diluent in at least one reactor, to produce a reaction mixture comprising epichlorohydrin contaminated with an amount of methyl glycidyl ether and b) subjecting the reaction mixture of a) to a treatment to separate out the epichlorohydrin; - and
c) recovering a purified epichlorohydrin product with a reduced amount of methyl glycidyl ether, compared to that in said reaction mixture. - View Dependent Claims (5, 6, 7, 8, 9, 10, 12, 13, 14, 15, 16)
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19. Process for manufacturing an epichlorohydrin-based purified product containing at least 99.9% by weight of epichlorohydrin and a total amount of chloro impurities of less than or equal to 150 ppm by weight, selected from the group consisting of 1-chloro-2-methoxy-3-propanol, 1,3-dichloro-2-propano, 2,3-dichloropropanol 1-chloro-2,3-dihydroxypropane and admixtures thereof, which comprises
a) reacting allyl chloride with a peroxide compound in the presence of water, a catalyst which is a titanium silicalite, and methanol in at least one reactor, to produce a reaction mixture comprising epichlorohydrin contaminated with an amount of methyl glycidyl ether and an amount of chloro impurities; - and
b) subjecting the reaction mixture of a) to a treatment to separate out the epichlorohydrin; and
c) recovering a purified epichlorohydrin product with a reduced amount of methyl glycidyl ether, compared to that in said reaction mixture;
d) distilling the epichlorohydrin to reduce the amount of chloro impurities. - View Dependent Claims (20, 21, 22)
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23. A purified epichlorohydrin product produced by reaction between allyl chloride and a peroxide in water and methanol, during which reaction methyl glycidyl ether and chloro impurities are produced in a contaminating amount,
wherein said product comprises epichlorohydrin, chloro impurities and methylglycidyl ether, wherein the product comprises at least 99.9% by weight of epichlorohydrin; - a total amount of chloro impurities of less than or equal to 150 ppm by weight and an amount of methyl glycidyl ether which is less than said contaminating amount.
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24. A purified epichlorohydrin product produced by reaction between allyl chloride and a peroxide in water and methanol, during which reaction methyl glycidyl ether and chloro impurities are produced in a contaminating amount,
wherein said product comprises epichlorohydrin, methylglycidyl ether, and chloro impurities selected from the group consisting of 1-chloro-2-methoxy-3-propanol, 1,3-dichloro-2-propano, 2,3-dichloropropanol 1-chloro-2,3-dihydroxypropane and admixtures thereof, wherein the product comprises at least 99.9% by weight of epichlorohydrin; - a total amount of chloro impurities of less than or equal to 150 ppm by weight and an amount of methyl glycidyl ether which is less than said contaminating amount.
Specification