Patent US6546250B1 successfully refreshed from Google Patents.
Patent CA1255653A successfully refreshed from Google Patents.
CA1255653A
Expired / Lapsed
CA
⏱️ 0.0 years remaining
Liquid crystalline materials useful to prepare polymeric films
Assignee: Armstrong World Industries Inc
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Filing: 1983-07-06
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Granted: 1989-06-13
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Expires: 2003-07-06
Abstract
Abstract LIQUID CRYSTALLINE MATERIALS USEFUL TO PREPARE POLYMERIC FILMS Abstract The present invention concerns novel cholesteric liquid crystalline monomers which are useful to form polymeric materials having unique optical properties.
Inventors
- 👤 Paul J. Shannon
Bibliographic Details
Application Number
—
Jurisdiction
CA
Data Source
google_patents
Last Synchronized
2026-11-03 15:26
CPC Classifications
C; C09; C09K; C09K19/00; C09K19/04; C09K19/06; C09K19/32; C07; C07J; C07J9/00; C08; C08F; C08F20/00; C08F20/02; C08F20/10; C08F20/26; C08F20/28; C08F20/30; C09K19/36; C09K19/38; C09K19/3833; C09K19/3842; C09K19/3852; C09K19/3866; C09K2019/0444; C09K2019/0448
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
24 words
Compounds having the structure where R1 = H or CH3. R2 = an alkylene chain having from 3-14 methylene or lower alkyl-substituted methylene groups.
Claim 2
Dependent Claim
24 words
Compounds having the structure where R1 = H or CH3. R2 = an alkylene chain having from 3-14 methylene or lower alkyl-substituted methylene groups.
Claim 3
Dependent Claim
28 words
Compounds having the structure where R1 = H or CH3, A = -R3O-, and R3 = an alkylene chain having from 2-14 methylene or lower alkyl-substituted methylene groups.
Claim 4
Dependent Claim
28 words
Compounds having the structure where R1 = H or CH3, A = -R3O-, and R3 = an alkylene chain having from 2-14 methylene or lower alkyl-substituted methylene groups.
Claim 5
Dependent Claim
50 words
Compounds having the structure where R1=H or CH3, A= -R4O-, R4= an alkylene ether, diether or triether having a total of from 3-14 carbon atoms in the alkylene moieties, provided that the terminal alkylene moiety adjacent the carbonate moiety comprises not less than two carbon atoms, and y=0 or 1.
Claim 6
Dependent Claim
50 words
Compounds having the structure where R1=H or CH3, A= -R4O-, R4= an alkylene ether, diether or triether having a total of from 3-14 carbon atoms in the alkylene moieties, provided that the terminal alkylene moiety adjacent the carbonate moiety comprises not less than two carbon atoms, and y=0 or 1.
Claim 7
Dependent Claim
22 words
The compounds as set forth in claim 3 hereof wherein the alkylene moieties of R4 are at least partially lower alkyl substituted.
References Cited (Backward Citations)
No citation records indexed.
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