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US 12,497,467 B2Granted
Recycle content cellulose ester
AssigneeExxon Mobil Product Solutions Company
InventorsDavid Eugene Slivensky, Daryl Bitting, Kenny Randolph Parker, Michael Gary Polasek, William Lewis Trapp, Xianchun Wu, Wenlai Feng, Thomas Joseph Pecorini, Michael Eugene Donelson, Haining An
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Abstract
A process for preparing a recycle content cellulose ester and a recycle content cellulose ester composition comprising at least one cellulose ester having at least one substituent on an anhydroglucose unit (AU) derived from a recycle ethylene composition are provided.
Claims18
A process for preparing a recycle cellulose ester (cellulose ester) comprising:
- (1) obtaining a recycled ethylene composition (r-ethylene) derived directly or indirectly from cracking a recycle content pyrolysis oil composition (r-pyoil), wherein the pyrolysis oil composition is not subjected to hydrogenation;
- (2) using the r-ethylene as a feedstock in a reaction scheme to produce at least one cellulose reactant for preparing a cellulose ester;
- and (3) reacting said at least one cellulose reactant to prepare at least one cellulose ester;
- wherein the r-pyoil is made from a waste plastic-containing stream that comprises at least 30 wt % waste plastic, and wherein the at least 30 wt % waste plastic comprises not more than 5 wt % of polyvinyl chloride.
1 more element
A method of obtaining a recycle content in cellulose ester comprising:
- a. obtaining a propionic acid composition and/or a propionic anhydride composition designated as having recycle content, and
- b. feeding said propionic acid and/or propionic anhydride to a reactor under conditions effective to make cellulose ester, and
- wherein, whether or not the designation so indicates, at least a portion of said propionic acid and/or propionic anhydride composition is derived directly or indirectly from cracking a recycle pyoil composition (r-pyoil), wherein the r-pyoil is made from a waste plastic-containing stream that comprises at least 30 wt % waste plastic wherein the method further comprises introducing or establishing a recycle content in cellulose ester by:
- c. obtaining a recycle ethylene composition (r-ethylene) allocation or credit,
- d. converting ethylene in a synthetic process to make propionic acid and/or to propionaldehyde and then convert the propionaldehyde to propionic acid,
- e. converting propionic acid in a synthetic process to make propionic anhydride,
- f. reacting propionic anhydride and/or propionic acid in a synthetic process to make cellulose ester,
- g. designating at least a portion of the cellulose ester as corresponding to at least a portion of the r-ethylene allocation or credit, and optionally
- h. offering to sell or selling the cellulose ester as containing or obtained with recycle content corresponding with such designation.
6 more elements
Dependencies are inferred from the claim text.