US4755574A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acrylic polymers exhibiting chiral and nonlinear optical properties
Assignee: CNA Holdings LLC
•
Filing: 1986-10-03
•
Granted: 1988-07-05
•
Expires: 2006-10-03
Abstract
Abstract In one embodiment this invention provides a nonlinear optical medium which is a transparent film of a thermoplastic polymer composed of recurring monomeric units corresponding to the formula: ##STR1##
Inventors
- 👤 Eui W. Choe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:40
CPC Classifications
C; C08; C08F; C08F20/00; C08F20/02; C08F20/10; C08F20/34; G; G02; G02F; G02F1/00; G02F1/35; G02F1/355; G02F1/361; G02F1/3615; G02F1/3617
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
76 words
A thermoplastic polymer which is characterized by a recurring monomeric unit corresponding to the formula: ##STR9## where R is a substituent selected from hydrogen and C 1 -C 4 alkyl groups; m is an integer of at least 3; n is an integer of about 1-25; n 1 is 0 or 1; Z is --NO 2 , --CN or --CF 3 ; and wherein the pendant ester group exhibits chiral optical properties and nonlinear optical response.
Claim 2
Dependent Claim
76 words
A thermoplastic polymer which is characterized by a recurring monomeric unit corresponding to the formula: ##STR9## where R is a substituent selected from hydrogen and C 1 -C 4 alkyl groups; m is an integer of at least 3; n is an integer of about 1-25; n 1 is 0 or 1; Z is --NO 2 , --CN or --CF 3 ; and wherein the pendant ester group exhibits chiral optical properties and nonlinear optical response.
Claim 3
Dependent Claim
12 words
A thermoplastic polymer in accordance with claim 1 wherein R is hydrogen.
Claim 4
Dependent Claim
12 words
A thermoplastic polymer in accordance with claim 1 wherein R is methyl.
Claim 5
Dependent Claim
14 words
A thermoplastic polymer in accordance with claim 1 wherein Z is --NO 2 .
Claim 6
Dependent Claim
12 words
A thermoplastic polymer in accordance with claim 1 wherein Z is --CN.
Claim 7
Dependent Claim
14 words
A thermoplastic polymer in accordance with claim 1 wherein Z is --CF 3 .
Claim 8
Dependent Claim
18 words
A thermoplastic polymer in accordance with claim 1 wherein the cyclic imine structure contains an asymmetric carbon atom.
Claim 9
Dependent Claim
20 words
A thermoplastic polymer in accordance with claim 1 wherein the polymer has a weight average molecular weight between about 500-500,000.
Claim 10
Dependent Claim
25 words
A thermoplastic polymer in accordance with claim 1 wherein the recurring monomeric units comprise at least about 20 weight percent of the total polymer weight.
Claim 11
Dependent Claim
20 words
A thermoplastic polymer in accordance with claim 1 wherein the polymer additionally is characterized by recurring polymerized ethylene monomeric units.
Claim 12
Dependent Claim
21 words
A thermoplastic polymer in accordance with claim 1 wherein the polymer additionally is characterized by recurring polymerized vinyl halide monomeric units.
Claim 13
Dependent Claim
20 words
A thermoplastic polymer in accordance with claim 1 wherein the polymer additionally is characterized by recurring polymerized arylethylene monomeric units.
Claim 14
Dependent Claim
24 words
A thermoplastic polymer in accordance with claim 1 wherein the polymer additionally is characterized by recurring polymerized acrylamide, methacrylamide, N,N-dialkylacrylamide or N,N-dialkylmethacrylamide monomeric units.
Claim 15
Dependent Claim
22 words
A thermoplastic polymer in accordance with claim 1 wherein the polymer additionally is characterized by recurring polymerized acrylonitrile or methacrylonitrile monomeric units.
Claim 16
Dependent Claim
2 words
Poly(L-N-p-nitrophenyl-2-pyrrolidinemethyl acrylate).
Claim 17
Dependent Claim
2 words
Poly(L-N-p-nitrophenyl-2-pyrrolidinemethyl acrylate).
Claim 18
Dependent Claim
2 words
Poly(L-N-p-nitrophenyl-2-pyrrolidinemethyl methacrylate).
Claim 19
Dependent Claim
2 words
Poly(L-N-p-nitrophenyl-2-pyrrolidinemethyl methacrylate).
Claim 20
Dependent Claim
2 words
Poly(L-N-p-cyanophenyl-2-pyrrolidinemethyl acrylate).
Claim 21
Dependent Claim
2 words
Poly(L-N-p-cyanophenyl-2-pyrrolidinemethyl acrylate).
Claim 22
Dependent Claim
2 words
Poly(L-N-p-cyanophenyl-2-pyrrolidinemethyl methacrylate).
Claim 23
Dependent Claim
2 words
Poly(L-N-p-cyanophenyl-2-pyrrolidinemethyl methacrylate).
References Cited (Backward Citations)
US4631328A
Cited
US4452878A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-07-05 | 1992-01-04 | 1992-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-07-05 | 1996-01-04 | 1996-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-07-05 | 2000-01-04 | 2000-07-05 | $7700.00 | Window Closed / Lapsed |