US2015210821A1PendingUtilityA1

Nanoporous linear polyolefin membranes and block copolymer precursors for same

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Assignee: UNIV MINNESOTAPriority: Mar 11, 2010Filed: Mar 12, 2015Published: Jul 30, 2015
Est. expiryMar 11, 2030(~3.6 yrs left)· nominal 20-yr term from priority
Inventors:Marc A. HillmyerLouis PitetMark Amendt
H01M 50/417H01M 50/414B01D 71/80C08J 9/34B01D 71/48B01D 2325/02833B01D 71/262B01D 71/261B01D 67/0031C08G 63/06B01D 2325/30B01D 71/76Y02E60/50H01M 8/102H01M 8/106C08G 2261/126Y02E60/10
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Claims

Abstract

A composition comprising a block copolymer that includes at least one polyester block and at least one linear polyolefin block, wherein the composition is in the form of a nano-structured, bicontinuous composite that includes a continuous matrix phase and a second continuous phase. The continuous matrix phase comprises the linear polyolefin block of the block copolymer, and the second continuous phase comprises the polyester block of the block copolymer. The composite may be treated to remove the polyester block, thereby forming a plurality of nano-pores.

Claims

exact text as granted — not AI-modified
1 - 10 . (canceled) 
     
     
         11 . A composition comprising a block copolymer that includes at least one polyester block and at least one linear polyolefin block, wherein the composition is in the form of a nano-structured, bicontinuous composite that includes a continuous matrix phase and a second continuous phase, wherein the continuous matrix phase comprises the linear polyolefin block of the block copolymer, and the second continuous phase comprises the polyester block of the block copolymer. 
     
     
         12 . A composition according to  claim 11 , wherein the polyolefin is polyethylene and the polyester is polylactide. 
     
     
         13 . A composition comprising a nano-structured, bicontinuous composite that includes a continuous matrix phase comprising a linear polyolefin and a second continuous phase comprising a plurality of nano-pores. 
     
     
         14 . A composition according to  claim 13 , wherein the pores have an average pore diameter of about 1 to about 500 nanometers. 
     
     
         15 . A composition according to  claim 13 , wherein the pores have an average pore diameter of about 10 to about 50 nanometers. 
     
     
         16 . A composition according to  claim 13 , wherein the composition is in the form of a nano-porous membrane. 
     
     
         17 . A composition according to  claim 16 , wherein the membrane is a battery separator. 
     
     
         18 . A composition according to  claim 16 , wherein the membrane is a water purification membrane. 
     
     
         19 . A composition according to  claim 13 , wherein the polyolefin is polyethylene.

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