EP0313477A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
An optical article containing a linear polymer exhibiting a high level of second order polarization susceptibility
Assignee: Eastman Kodak Co
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Filing: 1988-09-23
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Granted: —
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Expires: 2008-09-23
Abstract
Abstract An optical article is disclosed containing, for the transmission of electromagnetic radiation, a medium exhibiting a second order polarization susceptibility greater than 10- 9 electrostatic units comprised of a linear polymer containing as pendant groups polar aligned noncentrosymmetric molecular dipoles having an electron donor moiety linked through a conjugated π bonding system to an electron acceptor moiety to permit oscillation of the molecular dipole between a ground state exhibiting a first dipole moment and an excited state exhibiting a differing dipole moment. The linear polymer contains repeating units derived from vinyl addition polymerization, at least 5 percent of the repeating units incorporate the molecular dipoles as pendant groups, and the molecular dipoles include a sulfonyl electron acceptor moiety.
Inventors
- 👤 Douglas Robert C/O Eastman Kodak Company Robello
- 👤 Abraham C/O Eastman Kodak Company Ulman
- 👤 Craig Stanley C/O Eastman Kodak Company Willand
- 👤 Jay Stuart C/O Eastman Kodak Company Schildkraut
- 👤 Michael C/O Eastman Kodak Company Scozzafava
- 👤 Thomas Lorne C/O Eastman Kodak Company Penner
- 👤 David James C/O Eastman Kodak Company Williams
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-30 13:29
CPC Classifications
B; B82; B82Y; B82Y20/00; C; C08; C08F; C08F8/00; G; G02; G02F; G02F1/00; G02F1/01; G02F1/061; G02F1/065; G02F1/35; G02F1/355; G02F1/361; G02F1/3613; G02F1/3615; G02F1/3617; G02F1/3618
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
119 words
An optical article containing, for the transmission of electromagnetic radiation, a medium exhibiting a second order polarization susceptibility greater than 10- 9 electrostatic units comprised of a linear polymer containing as pendant groups polar aligned noncentrosymmetric molecular dipoles having an electron donor moiety linked through a conjugated π bonding system to an electron acceptor moiety to permit oscillation of the molecular dipole between a ground state exhibiting a first dipole moment and an excited state exhibiting a differing dipole moment, characterized in that the linear polymer contains repeating units derived from vinyl addition polymerization, at least 5 percent of the repeating unit incorporate the molecular dipoles as pendant groups, and the molecular dipoles include a sulfonyl electron acceptor moiety.
Claim 2
Dependent Claim
119 words
An optical article containing, for the transmission of electromagnetic radiation, a medium exhibiting a second order polarization susceptibility greater than 10- 9 electrostatic units comprised of a linear polymer containing as pendant groups polar aligned noncentrosymmetric molecular dipoles having an electron donor moiety linked through a conjugated π bonding system to an electron acceptor moiety to permit oscillation of the molecular dipole between a ground state exhibiting a first dipole moment and an excited state exhibiting a differing dipole moment, characterized in that the linear polymer contains repeating units derived from vinyl addition polymerization, at least 5 percent of the repeating unit incorporate the molecular dipoles as pendant groups, and the molecular dipoles include a sulfonyl electron acceptor moiety.
Claim 3
Dependent Claim
22 words
An optical article according to claim 1 further characterized in that means are provided for directing electromagnetic radiation to said transmission medium.
Claim 4
Dependent Claim
26 words
An optical article according to claim 1 or 2 further characterized in that biasing means are provided for placing an electric field across said transmission medium.
Claim 5
Dependent Claim
26 words
An optical article according to claim 3 further characterized in that said biasing means includes at least one transparent electrode in contact with said transmission medium.
Claim 6
Dependent Claim
26 words
An optical article according to claim 1 or 2 further characterized in that said transmission medium lies in contact with a linear waveguide for electromagnetic radiation.
Claim 7
Dependent Claim
31 words
An optical article accoridng to any one of claims 1 to 5 inclusive further characterized in that the transmission medium exhibits a τ (2) of at least 10- 8 electrostatic units.
Claim 8
Dependent Claim
23 words
An optical article according to any one of claims 1 to 6 inclusive further characterized in that the linear polymer is a homopolymer.
Claim 9
Dependent Claim
38 words
An optical article according to any one of claims 1 to 6 inclusive further characterized in that the repeating units incorporating the molecular dipoles form from 5 to 35 percent of the repeating units of the linear polymer.
Claim 10
Dependent Claim
37 words
An optical article according to any one of claims 1 to 8 inclusive further characterized in that the linear polymer exhibits a molecular weight in the range of from 10,000 to 200,000 on a weight average basis.
Claim 11
Dependent Claim
31 words
An optical article according to claim 9 further characterized in that the linear polymer exhibits a molecular weight in the range of from 15,000 to 120,000 on a weight average basis.
Claim 12
Dependent Claim
56 words
An optical article according to any one of claims 1 to 10 inclusive further characterized in that the molecular dipoles include an electron donor moiety linked to the sulfonyl electron acceptor moiety through a conjugated π bonding system consisting of two terminal carbocyclic aromatic rings linked through 1 to 3 vinyl groups or two aza groups.
Claim 13
Dependent Claim
48 words
An optical article accoridng to claim 11 further characterized int hat the molecular dipoles are represented by the formula: where A is a sulfonyl electron acceptor moiety; D is an electron donor moiety; E is a stilbenoid conjugated π bonding system; and L is a flexible spacer moiety.
Claim 14
Dependent Claim
19 words
An optical article accoridng to claim 12 further characterized in that D is a secondary or tertiary amino moiety.
Claim 15
Dependent Claim
26 words
An optical article accoridng to claim 12 or 13 further characterized in that A is : where R is L or an optionally substituted hydrocarbon moiety.
Claim 16
Dependent Claim
155 words
An optical article according to any one of claims 11 to 13 inclusive further characterized in that the molecular dipole is represented by the formula: where A is a sulfonyl electron acceptor moiety; D is an electron donor amino moiety; L is a flexible spacer moiety; R a represent hydrogen, subsituents which, together with the electron acceptor moiety, collectively enhance the electron acceptance of the phenyl ring to which they are attached, or, optionally in one occurrence, represent a bonding site for L; R d represent hydrogen, subsituents which, together with the electron donor amino moiety, collectively enhance the electron acceptance of the phenyl ring to which they are attached, or, optionally in one occurrence, represent a bonding site for L; G is independently in each occurrence a methine or aza moiety, with the proviso that no more than two aza moieties are next adjacent; and n is an integer of from 1 to 3.
Claim 17
Dependent Claim
33 words
An optical article according to any one of claims 1 to 15 inclusive further characterized in that the linear polymer contains repeating units derived from the vinyl addition polymerization of a styrenic monomer.
Claim 18
Dependent Claim
32 words
An optical article according to any one of claims 1 to 16 inclusive further characterized in that the linear polymer contains repeating units derived from the vinyl addition polymerization of 2-alkenoate esters.
Claim 19
Dependent Claim
66 words
An optical article accoridng to claim 17 further characterized in that the repeating units containing the molecular dipoles are represented by the formula: where A is a sulfonyl electron acceptor; E is a 4,4'-stilbene linking moiety; r is an integer of from 1 to 12; R 1 is hydrogen or methyl; and R 2 is hydrogen or a hydrocarbon containing from 1 to 6 carbon atoms.
Claim 20
Dependent Claim
49 words
An optical article according to claim 18 further characterized int hat remaining repeating units of the linear polymer are represented by the formula: where R 1 is hydrogen or methyl; R 5 is-CN or -C(O)OR 6 ; and R 6 is alkyl of from 1 to 6 carbon atoms.
Claim 21
Dependent Claim
23 words
An optical article according to claim 18 further characterized in that remaining repeating units of the linear polymer are derived from styrenic monomers.
References Cited (Backward Citations)
No citation records indexed.
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