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US 4,309,363 AGranted
Novel process
AssigneeTexaco Inc.
InventorJohn A. Patterson
Life of this patent
Estimating the term…
Abstract
Metal isethionates are carboxylated to metal isethionate carboxylates which are pyrolyzed to metal vinyl sulfonates.
Claims13
The method which comprises
- adding a metal isethionate carboxylate to a pyrolysis zone;
- maintaining said pyrolysis zone containing said metal isethionate carboxylate at pyrolyzing conditions including temperature of 150.degree. C.-300.degree. C. during a decomposition period thereby forming product metal vinyl sulfonate and carboxylic acid;
- and
- recovering said product metal vinyl sulfonate from said pyrolysis zone.
1 more element
The method which comprises
- adding sodium isethionate acetate to a pyrolysis zone;
- maintaining said pyrolysis zone containing said sodium isethionate acetate at pyrolyzing conditions, including temperature of 150.degree. C.-300.degree. C., during a decomposition period thereby forming product sodium vinyl sulfonate and acetic acid;
- and
- recovering said product sodium vinyl sulfonate from said pyrolysis zone.
1 more element
The method which comprises
- adding sodium isethionate acetate to a pyrolysis zone together with an inert high-boiling liquid;
- maintaining said sodium isethionate acetate and said inert high-boiling liquid in said pyrolysis zone at pyrolizing conditions including temperature of 150.degree. C.-300.degree. C. during a decomposition period thereby forming product sodium vinyl sulfonate and acetic acid;
- and
- recovering said product sodium vinyl sulfonate from said pyrolysis zone.
1 more element
The method which comprises
- adding sodium isethionate acetate to a pyrolysis zone together with ethoxylated nonyl phenol liquid;
- maintaining said pyrolysis zone at pyrolyzing conditions including temperature of 150.degree. C.-300.degree. C. during decomposition period of 1-20 hours thereby forming product sodium vinyl sulfonate;
- and
- recovering said product sodium vinyl sulfonate from said pyrolysis zone.
1 more element
The method which comprises
- adding a metal isethionate and acylating agent to a reaction mixture;
- maintaining said reaction mixture in liquid phase during a reaction period thereby forming product metal isethionate carboxylate;
- pyrolyzing said metal isethionate carboxylate in a pyrolysis zone at pyrolyzing conditions including temperature of 150.degree. C.-300.degree. C. during a decomposition period thereby forming product metal vinyl sulfonate and carboxylic acid;
- and
- recovering said product metal vinyl sulfonate from said pyrolysis zone.
2 more elements
Dependencies are inferred from the claim text.