US4405733A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composite quasi-crystalline material
Assignee: Xerox Corp
•
Filing: 1981-08-03
•
Granted: 1983-09-20
•
Expires: 2001-08-03
Abstract
Abstract A composite quasi-crystalline material made of a polymeric support matrix having disposed therein polar quasi-crystals of photochromic spiropyran complexes, believed to be of the formula A n B, in which A represents the "colorless" photochromic spiropyran molecule and B represents the colored merocyanine form which is the photolysis product of A, and n is 2 or 3. The polar quasi-crystals are present in the composite material in a substantially polar aligned form. Methods for making the composite material are also disclosed.
Inventors
- 👤 David J. Williams
- 👤 Gerald R. Meredith
- 👤 George R. Olin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:00
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/34; C08K5/3412; C08K5/3415; C08K5/3417; G; G02; G02F; G02F1/00; G02F1/35; G02F1/355; G02F1/361; G02F1/3615; G03; G03C; G03C1/00; G03C1/685
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
76 words
A composite material which comprises: (a) polar quasi-crystals of photochromic spiropyran complexes of the formula A n B, wherein A represents the uncolored photochromic spiropyran molecule and B represents the colored merocyanine form which is the product from photo-induced ring opening of A at the spiro carbon atom, and n is 2 or 3; and (b) a polymeric support matrix; said polar quasi-crystals being present within said polymeric support matrix in a substantially polar aligned form.
Claim 2
Dependent Claim
76 words
A composite material which comprises: (a) polar quasi-crystals of photochromic spiropyran complexes of the formula A n B, wherein A represents the uncolored photochromic spiropyran molecule and B represents the colored merocyanine form which is the product from photo-induced ring opening of A at the spiro carbon atom, and n is 2 or 3; and (b) a polymeric support matrix; said polar quasi-crystals being present within said polymeric support matrix in a substantially polar aligned form.
Claim 3
Dependent Claim
14 words
A composite material according to claim 1 wherein said photochromic spiropyran is an indolinobenzospiropyran.
Claim 4
Dependent Claim
61 words
A composite material according to claim 2 wherein A is ##STR3## and B is ##STR4## n is 2, and in which R 1 and R 2 may be the same or different radicals and selected from H, CH 3 CH 2 , CH 3 , CH 2 CH 2 OH, and CH 2 CH 2 OCOCCH 3 -- CH 2 .
Claim 5
Dependent Claim
21 words
A composite material according to claim 3 wherein said polymeric support matrix material comprises a thermoplastic material or a thermoset material.
Claim 6
Dependent Claim
15 words
A composite material according to claim 3 wherein A is ##STR5## and B is ##STR6##
Claim 7
Dependent Claim
49 words
A composite material according to claim 3 wherein said polymeric support matrix is selected from polyisobutene, atactic polypropylene, polyethylene, polycyclopentylethylene, polycyclohexylethylene, poly(3-cyclohexyl-1-propene), poly(4-cyclohexyl-1-butene), poly(5-cyclohexyl-1-pentene), polybutadiene, polychloroprene 1,4-cis; polychloroprene, poly(1methoxybutadiene), poly(5,7-dimethyl-1,6-octadiene), poly(diphenyldiacetylene), poly(vinylcaprylate), poly(vinyllaurate), poly(vinylpolmitate), poly(vinyl n-butyl ether), poly(vinyl isobutyl ether), polystyrene, poly(n-butylacrylate), poly(n-butylmethacrylate), poly(isobutylmethocrylate), poly(tertbutylcrotonate), polycyclohexene oxide, and polydimethylsiloxane.
Claim 8
Dependent Claim
14 words
A composite material according to claim 4 wherein said polymeric support material is polyisobutylmethacrylate.
Claim 9
Dependent Claim
97 words
A method for making the composite material of claim 1 which comprises: providing said polar quasi-crystals of photochromic spiropyran complexes of the formula A n B; providing a polymeric support matrix material; incorporating said polar quasi-crystals into said polymeric support matrix material while maintaining said polymeric support matrix in a yieldable state; and permitting said polymeric support matrix to change from said yieldable state to its normal ambient state; said quasi-crystals being caused to be in polar aligned form prior to permitting said polymeric support matrix to change from said yielding state to its normal ambient state.
Claim 10
Dependent Claim
60 words
A method according to claim 8 wherein A is ##STR7## and B is ##STR8## n is 2 and in which R 1 and R 2 may be the same or different radicals and selected from H, CH 3 , CH 2 CH 3 , CH 2 CH 2 OH, and CH 2 CH 2 OCOC CH 3 --CH 2 .
Claim 11
Dependent Claim
14 words
A method according to claim 9 wherein A is ##STR9## and B is ##STR10##
Claim 12
Dependent Claim
19 words
A method according to claim 9 wherein said polymeric support matrix comprises a thermoplastic material or a thermoset material.
Claim 13
Dependent Claim
15 words
A method according to claim 9 wherein said polymeric support matrix is a photoresist material.
Claim 14
Dependent Claim
49 words
A method according to claim 9 wherein said polymeric support matrix material is selected from polyisobutene, atactic polypropylene, polyethylene, polycyclopentylethylene, polycyclohexylethylene, poly(3-cyclohexyl-1-propene), poly(4-cyclohexyl-1-butene), poly(5-cyclohexyl-1-pentene), polybutadiene, polychloroprene 1,4-cis: polychloroprene, poly(1-methoxyutadiene), poly(5,7-dimethyl-1,6-octadiene), poly(diphenyldiacetylene), poly(vinylcaprylate), poly(vinyllaurate), poly(vinylpolmitate), poly(vinyl n-butyl ether), poly(vinyl isobutyl ether), polystyrene, poly(-n-butylacrylate), poly(n-butylmethacrylate), poly(isobutylmethocrylate), poly(tert-butylcrotonate), polycyclohexene oxide, and polydimethylsiloxane.
Claim 15
Dependent Claim
14 words
A method according to claim 10 wherein said polymeric support matrix material is polyisobutylmethacrylate.
Claim 16
Dependent Claim
49 words
A method according to claim 9 further comprising dispersing a dye in said polymeric support matrix material prior to the application of said electric field, said dye being selected to adjust the refractive index of the polymeric support matrix to substantially equal the refractive index of said polar quasi-crystals.
Claim 17
Dependent Claim
61 words
A method according to claim 9 wherein said polymeric support matrix material is a thermoplastic material and it is maintained in a yieldable state by heating to a point above its glass transition temperature, and wherein said polymeric support matrix is permitted to change from the yieldable state to its normal ambient state by cooling to below its glass transition temperature.
Claim 18
Dependent Claim
38 words
A method according to claim 9 wherein said polymeric support matrix material is a thermosetting material and it is yieldable while uncrosslinked, and it is changed from its yieldable state to its normal ambient state by crosslinking reaction.
Claim 19
Dependent Claim
146 words
A composite material which comprises: (a) polar quasi-crystals of photochromic spiropyran complexes of the formula A n B, wherein A represents the uncolored photochromic spiropyran molecule ##STR11## B represents the colored merocyanine form ##STR12## which is the product from photo-induced ring opening of A at the spiro carbon atom, n is 2 or 3, and R 1 and R 2 may be the same or different radicals and selected from H, CH 3 CH 2 , CH 3 CH 2 OH, and CH 2 CH 2 OCOCCH 3 --CH 2 ; (b) a polymeric support matrix, said polar quasi-crystals being present within said polymeric support matrix in a substantially polar aligned form; and (c) a dye dispersed in said polymeric support matrix, said dye being selected to adjust the refractive index of the polymeric support material to substantially equal the refractive index of said polar quasi-crystals.
Claim 20
Dependent Claim
146 words
A composite material which comprises: (a) polar quasi-crystals of photochromic spiropyran complexes of the formula A n B, wherein A represents the uncolored photochromic spiropyran molecule ##STR11## B represents the colored merocyanine form ##STR12## which is the product from photo-induced ring opening of A at the spiro carbon atom, n is 2 or 3, and R 1 and R 2 may be the same or different radicals and selected from H, CH 3 CH 2 , CH 3 CH 2 OH, and CH 2 CH 2 OCOCCH 3 --CH 2 ; (b) a polymeric support matrix, said polar quasi-crystals being present within said polymeric support matrix in a substantially polar aligned form; and (c) a dye dispersed in said polymeric support matrix, said dye being selected to adjust the refractive index of the polymeric support material to substantially equal the refractive index of said polar quasi-crystals.
Claim 21
Dependent Claim
38 words
A composite material according to claim 18 wherein said polymeric support matrix further contains Naphthol Green B dispersed therein, said Naphthol Green B being present in an amount about 1 percent by weight of said polymeric support matrix.
References Cited (Backward Citations)
US3867571A
Cited
US3922485A
Cited
US4040096A
Cited
US4034408A
Cited
US3938881A
Cited
US4171980A
Cited
US4237207A
Cited
US4205348A
Cited
US4213157A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-09-19 | 1987-03-21 | 1987-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-09-19 | 1991-03-21 | 1991-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-09-19 | 1995-03-21 | 1995-09-20 | $7700.00 | Window Closed / Lapsed |