Patent US4461886A successfully refreshed from Google Patents.
US4461886A
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Substituted birefringent polyamide
Assignee: Polaroid Corp
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Filing: 1983-04-20
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Granted: 1984-07-24
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Expires: 2003-04-20
Abstract
Abstract A class of polyamides comprising recurring units having certain substituted-biphenylene or substituted-stilbene radicals is disclosed. The substituted radicals include substituents so as to confer a non-coplanar molecular configuration and a substantially cylindrical distribution of electron density about the long axis of the recurring units and the chain-extended polymers including such radicals. Molecularly oriented polymers of the invention exhibit optically uniaxial properties. The highly birefringent polymers are suited to application in optical filter and other devices where a refractive and birefringent material is desired.
Inventors
- 👤 Howard G. Rogers
- 👤 Russell A. Gaudiana
- 👤 Jeannette S. Manello
- 👤 Ronald A. Sahatjian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:14
CPC Classifications
C; C08; C08G; C08G69/00; C08G69/02; C08G69/26; C08G69/32
Claims Analysis
Total Claims: 32
Claim 1
Independent Claim
185 words
A film- or fiber-forming polymer comprising recurring units of the formula ##STR62## wherein R 1 is hydrogen, alkyl, aryl, alkaryl or aralkyl and A is a divalent radical selected from the group consisting of: (1) a radical ##STR63## where each U is a substituent other than hydrogen, each W is hydrogen or a substituent other than hydrogen, and each p is an integer from 1 to 3, said U and W p substitution being sufficient to provide the aromatic nuclei of said radical with a non-coplanar molecular configuration with respect to each other; and (2) a radical ##STR64## where each of Y and Z is hydrogen or a substituent other than hydrogen and each t is an integer from 1 to 4, with the proviso that when each said Z is hydrogen, at least one said Y substituent is a substituent other than hydrogen positioned on the corresponding nucleus ortho with respect to the ##STR65## moiety of said radical, said Z and Y t substitution being sufficient to provide the aromatic nuclei of said radical with a non-coplanar molecular configuration with respect to each other.
Claim 2
Dependent Claim
185 words
A film- or fiber-forming polymer comprising recurring units of the formula ##STR62## wherein R 1 is hydrogen, alkyl, aryl, alkaryl or aralkyl and A is a divalent radical selected from the group consisting of: (1) a radical ##STR63## where each U is a substituent other than hydrogen, each W is hydrogen or a substituent other than hydrogen, and each p is an integer from 1 to 3, said U and W p substitution being sufficient to provide the aromatic nuclei of said radical with a non-coplanar molecular configuration with respect to each other; and (2) a radical ##STR64## where each of Y and Z is hydrogen or a substituent other than hydrogen and each t is an integer from 1 to 4, with the proviso that when each said Z is hydrogen, at least one said Y substituent is a substituent other than hydrogen positioned on the corresponding nucleus ortho with respect to the ##STR65## moiety of said radical, said Z and Y t substitution being sufficient to provide the aromatic nuclei of said radical with a non-coplanar molecular configuration with respect to each other.
Claim 3
Dependent Claim
75 words
The film- or fiber-forming polymer of claim 1 wherein said divalent radical A is said radical having the formula ##STR66## wherein each U is a substituent other than hydrogen, each W is hydrogen or a substituent other than hydrogen and each p is an integer from 1 to 3, said U and W p substitution being sufficient to provide the aromatic nuclei of said radical with a non-coplanar molecular configuration with respect to each other.
Claim 4
Dependent Claim
13 words
The film- or fiber-forming polymer of claim 2 wherein R 1 is hydrogen.
Claim 5
Dependent Claim
28 words
The film- or fiber-forming polymer of claim 2 wherein said divalent radical is a radical having the formula ##STR67## wherein each U is a substituent other than hydrogen.
Claim 6
Dependent Claim
24 words
The film- or fiber-forming polymer of claim 4 wherein each U substituent is selected from the group consisting of halogen, nitro, alkoxy and substituted-alkyl.
Claim 7
Dependent Claim
14 words
The film- or fiber-forming polymer of claim 5 wherein each U substituent is bromo.
Claim 8
Dependent Claim
14 words
The film- or fiber-forming polymer of claim 5 wherein each U substituent is nitro.
Claim 9
Dependent Claim
14 words
The film- or fiber-forming polymer of claim 5 wherein each U substituent is trifluoromethyl.
Claim 10
Dependent Claim
13 words
The film- or fiber-forming polymer of claim 8 wherein R 1 is hydrogen.
Claim 11
Dependent Claim
107 words
The film- or fiber-forming polymer of claim 1 wherein said divalent radical A is a radical having the formula ##STR68## where each of Y and Z is hydrogen or a substituent other than hydrogen and each t is an integer from 1 to 4, with the proviso that when each said Z is hydrogen, at least one said Y substituent is a substituent other than hydrogen positioned on the corresponding nucleus ortho with respect to the ##STR69## moiety of said radical, said Z and Y t substitution being sufficient to provide the aromatic nuclei of said radical with a non-coplanar molecular configuration with respect to each other.
Claim 12
Dependent Claim
13 words
The film- or fiber-forming polymer of claim 10 wherein R 1 is hydrogen.
Claim 13
Dependent Claim
40 words
The film- or fiber-forming polymer of claim 10 wherein each said Z is hydrogen, each said t is the integer one and each corresponding Y substituent is a substituent other than hydrogen positioned on the ##STR70## moiety of the radical.
Claim 14
Dependent Claim
24 words
The film- or fiber-forming polymer of claim 12 wherein each said Y substituent is selected from the group consisting of halogen, nitro and alkoxy.
Claim 15
Dependent Claim
32 words
The film- or fiber-forming polymer of claim 10 wherein each Y is hydrogen, each t is the integer four, one said Z is hydrogen, and the remaining said Z substituent is halogen.
Claim 16
Dependent Claim
13 words
The film- or fiber-forming polymer of claim 14 wherein said halogen is bromo.
Claim 17
Dependent Claim
193 words
A molecularly oriented birefringent polymer in the form of a film or fiber comprising recurring units of the formula ##STR71## wherein R 1 is hydrogen, alkyl, aryl, alkaryl or aralkyl and A is a divalent radical selected from the group consisting of: (1) a radical ##STR72## where each U is a substituent other than hydrogen, each W is hydrogen or a substituent other than hydrogen and each p is an integer from 1 to 3, said U and W p substitution being sufficient to provide the aromatic nuclei of said radical with a non-coplanar molecular configuration with respect to each other; and (2) a radical ##STR73## where each of Y and Z is hydrogen or a substituent other than hydrogen and each t is an integer from 1 to 4, with the proviso that when each said Z is hydrogen, at least one said Y substituent is a substituent other than hydrogen positioned on the corresponding nucleus ortho with respect to the ##STR74## moiety of said radical, said Z and Y t substitution being sufficient to provide the aromatic nuclei of said radical with a non-coplanar molecular configuration with respect to each other.
Claim 18
Dependent Claim
193 words
A molecularly oriented birefringent polymer in the form of a film or fiber comprising recurring units of the formula ##STR71## wherein R 1 is hydrogen, alkyl, aryl, alkaryl or aralkyl and A is a divalent radical selected from the group consisting of: (1) a radical ##STR72## where each U is a substituent other than hydrogen, each W is hydrogen or a substituent other than hydrogen and each p is an integer from 1 to 3, said U and W p substitution being sufficient to provide the aromatic nuclei of said radical with a non-coplanar molecular configuration with respect to each other; and (2) a radical ##STR73## where each of Y and Z is hydrogen or a substituent other than hydrogen and each t is an integer from 1 to 4, with the proviso that when each said Z is hydrogen, at least one said Y substituent is a substituent other than hydrogen positioned on the corresponding nucleus ortho with respect to the ##STR74## moiety of said radical, said Z and Y t substitution being sufficient to provide the aromatic nuclei of said radical with a non-coplanar molecular configuration with respect to each other.
Claim 19
Dependent Claim
75 words
The polymeric film or fiber of claim 16 wherein said divalent radical A is said radical having the formula ##STR75## wherein each U is a substituent other than hydrogen, each W is hydrogen or a substituent other than hydrogen and each p is an integer from 1 to 3, said U and W p substitution being sufficient to provide the aromatic nuclei of said radical with a non-coplanar molecular configuration with respect to each other.
Claim 20
Dependent Claim
13 words
The polymeric film or fiber of claim 17 wherein R 1 is hydrogen.
Claim 21
Dependent Claim
28 words
The polymeric film or fiber of claim 17 wherein said divalent radical is a radical having the formula ##STR76## wherein each U is a substituent other than hydrogen.
Claim 22
Dependent Claim
24 words
The polymeric film or fiber of claim 19 wherein each U substituent is selected from the group consisting of halogen, nitro, alkoxy and substituted-alkyl.
Claim 23
Dependent Claim
14 words
The polymeric film or fiber of claim 20 wherein each U substituent is bromo.
Claim 24
Dependent Claim
14 words
The polymeric film or fiber of claim 20 wherein each U substituent is nitro.
Claim 25
Dependent Claim
14 words
The polymeric film or fiber of claim 20 wherein each U substituent is trifluoromethyl.
Claim 26
Dependent Claim
13 words
The polymeric film or fiber of claim 23 wherein R 1 is hydrogen.
Claim 27
Dependent Claim
107 words
The polymeric film or fiber of claim 16 wherein said divalent radical A is a radical having the formula ##STR77## where each of Y and Z is hydrogen or a substituent other than hydrogen and each t is an integer from 1 to 4, with the proviso that when each said Z is hydrogen, at least one said Y substituent is a substituent other than hydrogen positioned on the corresponding nucleus ortho with respect to the ##STR78## moiety of said radical, said Z and Y t substitution being sufficient to provide the aromatic nuclei of said radical with a non-coplanar molecular configuration with respect to each other.
Claim 28
Dependent Claim
13 words
The polymeric film or fiber of claim 25 wherein R 1 is hydrogen.
Claim 29
Dependent Claim
40 words
The polymeric film or fiber of claim 25 wherein each said Z is hydrogen, each said t is the integer one and each corresponding Y substituent is a substituent other than hydrogen positioned on the ##STR79## moiety of the radical.
Claim 30
Dependent Claim
24 words
The polymeric film or fiber of claim 27 wherein each said Y substituent is selected from the group consisting of halogen, nitro and alkoxy.
Claim 31
Dependent Claim
32 words
The polymeric film or fiber of claim 25 wherein each Y is hydrogen, each t is the integer four, one said Z is hydrogen, and the remaining said Z substituent is halogen.
Claim 32
Dependent Claim
13 words
The polymeric film or fiber of claim 29 wherein said halogen is bromo.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-07-24 | 1988-01-23 | 1988-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-07-24 | 1992-01-23 | 1992-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-07-24 | 1996-01-23 | 1996-07-24 | $7700.00 | Window Closed / Lapsed |