US4694048A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermoplastic polymers containing repeating hydrazide groups
Assignee: CNA Holdings LLC
•
Filing: 1986-04-21
•
Granted: 1987-09-15
•
Expires: 2006-04-21
Abstract
Abstract In one embodiment this invention provides a nonlinear optical substrate which is a transparent film of a thermoplastic polymer containing recurring units corresponding to the formula: ##STR1##
Inventors
- 👤 Eui W. Choe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:21
CPC Classifications
C; C08; C08F; C08F8/00; C08F8/30; C08F2800/00; C08F2800/10; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31721
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
57 words
A thermoplastic polymer which consists of recurring structural units corresponding to the formula: ##STR11## where R is a substituent selected from hydrogen or alkyl groups, n is the integer zero or one, X is a substituent selected from nitro, cyano, trifluoromethyl or tricyanoethylene groups, and Y is a substituent selected from hydrogen, alkyl, nitro or cyano groups.
Claim 2
Dependent Claim
57 words
A thermoplastic polymer which consists of recurring structural units corresponding to the formula: ##STR11## where R is a substituent selected from hydrogen or alkyl groups, n is the integer zero or one, X is a substituent selected from nitro, cyano, trifluoromethyl or tricyanoethylene groups, and Y is a substituent selected from hydrogen, alkyl, nitro or cyano groups.
Claim 3
Dependent Claim
21 words
A thermoplastic polymer in accordance with claim 1 wherein the weight average molecular weight of the polymer is between about 500-500,000.
Claim 4
Dependent Claim
24 words
A thermoplastic polymer in accordance with claim 1 wherein the repeating structural units comprise at least 10 weight percent of the total polymer weight.
Claim 5
Dependent Claim
16 words
A thermoplastic polymer in accordance with claim 1 wherein X is nitro and Y is hydrogen.
Claim 6
Dependent Claim
16 words
A thermoplastic polymer in accordance with claim 1 wherein X is nitro and Y is nitro.
Claim 7
Dependent Claim
16 words
A thermoplastic polymer in accordance with claim 1 wherein X is cyano and Y is hydrogen.
Claim 8
Dependent Claim
16 words
A thermoplastic polymer in accordance with claim 1 wherein X is trifluoromethyl and Y is hydrogen.
Claim 9
Dependent Claim
16 words
A thermoplastic polymer in accordance with claim 1 wherein X is tricyanoethylene and Y is hydrogen.
Claim 10
Dependent Claim
12 words
A thermoplastic polymer in accordance with claim 1 wherein R is hydrogen.
Claim 11
Dependent Claim
12 words
A thermoplastic polymer in accordance with claim 1 wherein R is methyl.
Claim 12
Dependent Claim
65 words
A nonlinear optical medium comprising a substrate of a thermoplastic polymer which consists of recurring structral units corresponding to the formula: ##STR12## where R is a substituent selected from hydrogen and alkyl groups, n is the integer zero or one, X is a substituent selected from nitro, cyano, trifluoromethyl or tricyanoethylene groups, and Y is a substituent selected from hydrogen, alkyl, nitro or cyano groups.
Claim 13
Dependent Claim
65 words
A nonlinear optical medium comprising a substrate of a thermoplastic polymer which consists of recurring structral units corresponding to the formula: ##STR12## where R is a substituent selected from hydrogen and alkyl groups, n is the integer zero or one, X is a substituent selected from nitro, cyano, trifluoromethyl or tricyanoethylene groups, and Y is a substituent selected from hydrogen, alkyl, nitro or cyano groups.
Claim 14
Dependent Claim
21 words
A nonlinear optical medium in accordance with claim 11 wherein the substrate is in the form of an optically transparent film.
Claim 15
Dependent Claim
21 words
A nonlinear optical medium in accordance with claim 11 wherein the substrate is noncentrosymmetric and exhibits second order nonlinear optical response.
Claim 16
Dependent Claim
21 words
A nonlinear optical medium in accordance with claim 11 wherein the substrate is centrosymmetric and exhibits third order nonlinear optical response.
Claim 17
Dependent Claim
20 words
An optical medium in accordance with claim 11 which is contained as a nonlinear optical component in an optical device.
References Cited (Backward Citations)
US4083835A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-09-14 | 1991-03-16 | 1991-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-09-14 | 1995-03-16 | 1995-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-09-14 | 1999-03-16 | 1999-09-15 | $7700.00 | Window Closed / Lapsed |