Polybenzazole polymers containing indan moieties
First Claim
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1. A polybenzoxazole or polybenzothiazole polymer containing a plurality of repeating units which comprise:
- (1) a benzo-bis-azole moiety containing a first aromatic group fused with a first and a second azole ring, each azole ring being selected from the group consisting of oxazole and thiazole rings; and
(2) a divalent organic moiety bonded to the 2-carbon of the first azole ring, said divalent organic moiety containing an indan moietywherein each indan moiety contains a second aromatic ring fused to a five-membered ring which is saturated, except for the two carbon atoms which are part of the second aromatic group, and each indan moiety is linked to the rest of the polymer by a single bond to the second aromatic group and a single bond to the saturated ring.
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Abstract
Polybenzazole polymer containing indan moieties may be synthesized. Those polymers can be fabricated into membranes, which are useful for gas separations.
41 Citations
52 Claims
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1. A polybenzoxazole or polybenzothiazole polymer containing a plurality of repeating units which comprise:
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(1) a benzo-bis-azole moiety containing a first aromatic group fused with a first and a second azole ring, each azole ring being selected from the group consisting of oxazole and thiazole rings; and (2) a divalent organic moiety bonded to the 2-carbon of the first azole ring, said divalent organic moiety containing an indan moiety wherein each indan moiety contains a second aromatic ring fused to a five-membered ring which is saturated, except for the two carbon atoms which are part of the second aromatic group, and each indan moiety is linked to the rest of the polymer by a single bond to the second aromatic group and a single bond to the saturated ring. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A membrane comprising a polybenzoxazole or polybenzothiazole polymer that contains a plurality of repeating units which comprise a moiety represented by the Formula:
- ##STR21## wherein;
each Ar is an aromatic group, each Z is independently an oxygen atom or a sulfur atom,each R is a hydrogen atom or substituent that does not interfere with the synthesis, fabrication or use of the membrane, and each A is bond or a divalent linking moiety that does not interfere with the synthesis, fabrication or use of the membrane. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52)
- ##STR21## wherein;
Specification