Poly(meth)acrylate membranes for separation of hydrocarbon mixtures
AssigneeGeneral Electric Company
InventorsGary William Yeager, Sharon Oba, Christopher J. Ellison
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Abstract
The separation of hydrocarbon mixtures comprising a polymerizable vinyl containing polyester of the formula I: Each R and R2 is independently a C6-C20 aromatic residue or a C1-C20 aliphatic residue. Each R1 is independently hydrogen or C1-C5 alkyl; “j” is an integer in the range of 1-1000. Z is a heteroatom or two hydrogen atoms. The invention is also directed to the method of preparing the separation membrane.
Claims17
A separation membrane for the separation of hydrocarbon mixtures comprising the crosslinked reaction product of a polymerizable vinyl containing polyester having a structure of the formula:
- wherein each R and R2 is independently a C6-C20 aromatic residue or a C1-C20 aliphatic residue,
- each R1 is independently hydrogen or C1-C5 alkyl;
- “j” is an integer in the range of 2-1000;
- and
- Z is oxygen, sulfur or two hydrogen atoms;
- with an initiator.
A separation membrane for the separation of hydrocarbon mixtures comprising the crosslinked reaction product of a polymerizable vinyl containing polyester comprises a structure of the formula
- wherein each R and R2 is independently a C6-C20 aromatic residue or a C1-C20 aliphatic residue,
- each R1 is independently hydrogen or C1-C5 alkyl;
- “s” is an integer in the range of 2-1000;
- “t” is an integer between 1 and 10;
- and
- Z is oxygen, sulfur or two hydrogen atoms;
- with an initiator.
A method of preparing a separation membrane comprising the steps of:
- providing a polyester diol,
- reacting the polyester diol with methacryloyl chloride to form a vinyl containing polyester,
- treating the vinyl containing polyester with a radical initiator to form a membrane mixture in a solvent,
- casting the membrane mixture onto a membrane support,
- removing the solvent from the membrane mixture, and
- curing the membrane under nitrogen atmosphere.
Dependencies are inferred from the claim text.