Recycling of polyacetal for the production of polyoxymethylene dialkyl ethers
AssigneeArkema France
InventorJean-Luc DUBOIS
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Abstract
The present invention relates to a process for recycling polyacetal containing from 8 to 100,000 carbon atoms for the production of a produced polyoxymethylene dialkyl ether of formula R—(OCH2)n-OR′, in which R and R′ independently represent a methyl group or an ethyl group and n is an integer greater than or equal to 1, the process comprising a step of reacting an acid catalyst with a mixture comprising a polyacetal containing from 8 to 100 000 carbon atoms, a reactive polyoxymethylene dialkyl ether of formula R—(OCH2)k-OR′ in which k is an integer greater than or equal to 1, and optionally a solvent.
Claims20
A process for recycling polyacetal containing from 8 to 100,000 carbon atoms for the production of a produced polyoxymethylene dialkyl ether of formula R—(OCH2)n—OR′, in which R and R′ independently represent a methyl group or an ethyl group and n is an integer greater than or equal to 1, the process comprising a step of reacting an acid catalyst with a mixture comprising a polyacetal containing from 8 to 100,000 carbon atoms, a reactive polyoxymethylene dialkyl ether of formula R—(OCH2)k—OR′ in which R and R′ are as defined above and k is an integer greater than or equal to 1, and optionally a solvent.
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Dependencies are inferred from the claim text.