Patent EP0249963A2 successfully refreshed from Google Patents.
EP0249963A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Polycarbonates
Assignee: Idemitsu Kosan Co Ltd
•
Filing: 1987-06-16
•
Granted: —
•
Expires: 2007-06-16
Abstract
Abstract A polycarbonate polymer containing repeating units epresented by the following general formula wherein: X is selected from single bond,-O-,-S-,-SO 2 -, wherein: R 1 and R 2 are each independently selected from hydrogen atom; alkyl radical of 1 to 6 carbon atoms; cycloalkyl radical of 5 to 6 carbon atoms; wherein is an integer having a value of from 0 to 3; phenyl radicals substituted at para position by a substituent seleced from alkoxy radicals of 1 to 5 carbon atoms, phenoxy radicals, or halogen radicals; or p-biphenylyl radical, -(CH 2 )- q wherein q is an integer having a value of from 2 to 10; or wherein r is an integer having a value of from 4 to 8, and having a reduced viscosity [ηsp/c] of at least 0.2 dl/g as measured in methylene chloride at a concentration of 0.5 g/dl at 20 °C. Such polycarbonates exhibit excellent optical properties such as high birefringence, and are useful as materials for optical devices. Also, a process for preparing the polycarbonates and novel dihydric phenols which can be used as materials for the polycarbonates are disclosed.
Inventors
- 👤 Kazuyoshi Shigematsu
- 👤 Takashi Nakagawa
- 👤 Shuji Sakamoto
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-26 17:01
CPC Classifications
C; C07; C07C; C07C317/00; C07C39/00; C07C39/12; C07C39/15; C07C39/16; C07C43/00; C07C43/02; C07C43/20; C07C43/23; C07C43/257; C07C43/295; C08; C08G; C08G64/00; C08G64/04; C08G64/06
Claims Analysis
Total Claims: 31
Claim 1
Independent Claim
152 words
A polycarbonate polymer consisting essentially of repeating units represented by the following general formula wherein: x is selected from single bond, -0-, -S-, -S0 2 -, wherein: R 1 and R 2 are each independently selected from hydrogen atom; alkyl radicals of 1 to 6 carbon atoms; cycloalkyl radicals of 5 to 6 carbon atoms; wherein p is an integer having a value of from 0 to 3; phenyl radicals substituted at para position by a substituent selected from alkoxy radicals of 1 to 5 carbon atoms, phenoxy radical, or halogen radicals; or p-biphenylyl radical, (̵CH 2 )̵ q wherein q is an integer having a value of from 2 to 10, or wherein r is an integer having a value of from 4 to 8, and having a reduced viscosity [η sp/c] of at least 0.2 dl/g as measured in methylene chloride at a concentration of 0.5 g/dl at 20 °C.
Claim 2
Dependent Claim
152 words
A polycarbonate polymer consisting essentially of repeating units represented by the following general formula wherein: x is selected from single bond, -0-, -S-, -S0 2 -, wherein: R 1 and R 2 are each independently selected from hydrogen atom; alkyl radicals of 1 to 6 carbon atoms; cycloalkyl radicals of 5 to 6 carbon atoms; wherein p is an integer having a value of from 0 to 3; phenyl radicals substituted at para position by a substituent selected from alkoxy radicals of 1 to 5 carbon atoms, phenoxy radical, or halogen radicals; or p-biphenylyl radical, (̵CH 2 )̵ q wherein q is an integer having a value of from 2 to 10, or wherein r is an integer having a value of from 4 to 8, and having a reduced viscosity [η sp/c] of at least 0.2 dl/g as measured in methylene chloride at a concentration of 0.5 g/dl at 20 °C.
Claim 3
Dependent Claim
21 words
A polycarbonate polymer as defined in claim 1 wherein X represents wherein R 1 and R 2 are as defined above.
Claim 4
Dependent Claim
66 words
A polycarbonate polymer as defined in claim 2 wherein R 1 is selected from alkyl radicals of 1 to 6 carbon atoms, and R 2 is selected from wherein p is an integer having a value of from 0 to 3; or phenyl radical substituted at para position by a substituent selected from alkoxy radicals of 1 to 5 carbon atoms, phenoxy radical, or halogen radicals.
Claim 5
Dependent Claim
27 words
A polycarbonate polymer as defined in claim 3 wherein R 1 is methyl radical and R 2 is selected from phenyl radical, phenoxyphenyl radical, or methoxyphenyl radical.
Claim 6
Dependent Claim
24 words
A polycarbonate polymer as defined in claim 4 wherein the monomeric building block in formula [I] is selected from 2,2-bis(3-phenyl-4-hydroxyphenyl)propane, 1-phenyl-l,l-bis(3-phenyl-4-hydroxyphenyl)ethane, 1-(4-methoxyphenyl)-1,1-bis(3-phenyl-4-hydroxyphenyl)ethane, or 1-(4-phenoxyphenyl)-1,1-bis(3-phenyl-4-hydroxyphenyl)ethane.
Claim 7
Dependent Claim
24 words
A polycarbonate polymer as defined in claim 1 wherein X represents wherein r is an integer having a value of from 4 to 8.
Claim 8
Dependent Claim
19 words
A polycarbonate polymer as defined in claim 6 wherein the monomeric building block in formula [I] is 1,1- bis(3-phenyl-4-hydroxyphenyl)cyclohexane.
Claim 9
Dependent Claim
14 words
A polycarbonate polymer as defined in claim 1 wherein X represents -S0 2 -.
Claim 10
Dependent Claim
18 words
A polycarbonate polymer as defined in claim 8 wherein the monomeric building block in formula [I] is bis(3-phenyl-4-hydroxyphenyl)sulfone.
Claim 11
Dependent Claim
12 words
A polycarbonate polymer as defined in claim wherein X represents single bond.
Claim 12
Dependent Claim
20 words
A polycarbonate polymer as defined in claim 10 wherein the monomeric building block in formula [I] is 3,3' -diphenyl-4,4' -dihydroxybiphenyl.
Claim 13
Dependent Claim
214 words
A polycarbonate copolymer consisting essentially of repeating units represented by the general formula and repeating units represented by the general formula wherein X and Y are each independently selected from single bond, -0-, -S-, -S0 2 -, wherein: R 1 and R 2 are each independently selected from hydrogen atom; alkyl radicals of 1 to 6 carbon atoms; cycloalkyl radicals of 5 to 6 carbon atoms; wherein p is an integer having a value of from 0 to 3; phenyl radicals substituted at para position by a substituent selected from alkoxy radicals of 1 to 5 carbon atoms, phenoxy radical, or halogen radicals; or p-biphenylyl radical, (̵CH 2 )̵ q wherein q is an integer having a value from 2 to 10, or wherein r is an integer having a value of from 4 to 8 X and Y may be the same or different from each other, R 3 and R 4 are each independently selected from hydrogen atom, halogen radicals, or alkyl radicals of 1 to 5 carbon atoms, and 1 and m independently are an integer having a value of from 1 to 4, and having a reduced viscosity [η sp/c] of at least 0.2 dl/g as measured in methylene chloride at a concentration of 0.5 g/dl at 2 0 °C.
Claim 14
Dependent Claim
214 words
A polycarbonate copolymer consisting essentially of repeating units represented by the general formula and repeating units represented by the general formula wherein X and Y are each independently selected from single bond, -0-, -S-, -S0 2 -, wherein: R 1 and R 2 are each independently selected from hydrogen atom; alkyl radicals of 1 to 6 carbon atoms; cycloalkyl radicals of 5 to 6 carbon atoms; wherein p is an integer having a value of from 0 to 3; phenyl radicals substituted at para position by a substituent selected from alkoxy radicals of 1 to 5 carbon atoms, phenoxy radical, or halogen radicals; or p-biphenylyl radical, (̵CH 2 )̵ q wherein q is an integer having a value from 2 to 10, or wherein r is an integer having a value of from 4 to 8 X and Y may be the same or different from each other, R 3 and R 4 are each independently selected from hydrogen atom, halogen radicals, or alkyl radicals of 1 to 5 carbon atoms, and 1 and m independently are an integer having a value of from 1 to 4, and having a reduced viscosity [η sp/c] of at least 0.2 dl/g as measured in methylene chloride at a concentration of 0.5 g/dl at 2 0 °C.
Claim 15
Dependent Claim
24 words
A polycarbonate copolymer as defined in claim 12 wherein x and Y independently are wherein R 1 and R 2 are as defined above.
Claim 16
Dependent Claim
66 words
A polycarbonate copolymer as defined in claim 13 wherein R 1 is selected from alkyl radicals of 1 to 6 carbon atoms, and R 2 is selected from wherein p is an integer having a value of from 0 to 3; or phenyl radicals substituted at para position by a substituent selected from alkoxy radicals of 1 to 5 carbon atoms, phenoxy radical, or halogen radicals.
Claim 17
Dependent Claim
42 words
A polycarbonate copolymer as defined in claim 14 wherein R 1 is methyl radical and R 2 is selected from phenyl radical, phenoxyphenyl radical, or methoxyphenyl radical in formula [I], and R 1 and R 2 in formula [III] represent methyl radical.
Claim 18
Dependent Claim
34 words
A polycarbonate copolymer as defined in claim 15, wherein the monomeric building block in formula [I] is selected from 2,2-bis(3-phenyl-4-hydroxyphenyl)propane, 1-phenyl-1,1-bis(3-phenyl-4-hydroxyphenyl)ethane, 1-(4-methoxyphenyl)-1,1-bisC3-phenyl-4-hydroxyphenyl)ethane, or 1-(4-phenoxyphenyl)-1,1-bis(3-phenyl-4-hydroxyphenyl)ethane, and the monomeric building block in formula [III] is 2,2-bis(4-hydroxyphenyl)propane.
Claim 19
Dependent Claim
27 words
A polycarbonate copolymer as defined in claim 16 wherein the mole fraction of the repeating units represented by formula [I] is not less than 20 mol %.
Claim 20
Dependent Claim
178 words
A process for preparing a polycarbonate polymer consisting essentially of repeating units represented by the following general formula wherein: X is selected from single bond, -0-, -S-, -S0 2 -, wherein: R 1 and R 2 are each independently selected from hydrogen atom; alkyl radicals of 1 to 6 carbon atoms; cycloalkyl radicals of 5 to 6 carbon atoms; wherein p is an integer having a value of from 0 to 3; phenyl radicals substituted at para position by a substituent selected from alkoxy radicals of 1 to 5 carbon atoms, phenoxy radical, or halogen radicals; or p-biphenylyl radical, (̵CH 2 )̵ q wherein q is an integer having a value of from 2 to 10; or \ wherein r is an integer having a value of from 4 to 8, and having a reduced viscosity [η sp/c] of at least 0.2 dl/g as measured in methylene chloride at a concentration of 0.5 g/dl at 20 °C, which process comprises reacting a dihydric phenol having the general formula wherein X is as defined above, and a carbonate precursor.
Claim 21
Dependent Claim
178 words
A process for preparing a polycarbonate polymer consisting essentially of repeating units represented by the following general formula wherein: X is selected from single bond, -0-, -S-, -S0 2 -, wherein: R 1 and R 2 are each independently selected from hydrogen atom; alkyl radicals of 1 to 6 carbon atoms; cycloalkyl radicals of 5 to 6 carbon atoms; wherein p is an integer having a value of from 0 to 3; phenyl radicals substituted at para position by a substituent selected from alkoxy radicals of 1 to 5 carbon atoms, phenoxy radical, or halogen radicals; or p-biphenylyl radical, (̵CH 2 )̵ q wherein q is an integer having a value of from 2 to 10; or \ wherein r is an integer having a value of from 4 to 8, and having a reduced viscosity [η sp/c] of at least 0.2 dl/g as measured in methylene chloride at a concentration of 0.5 g/dl at 20 °C, which process comprises reacting a dihydric phenol having the general formula wherein X is as defined above, and a carbonate precursor.
Claim 22
Dependent Claim
31 words
A process as defined in claim 18 wherein the dihydric phenol having the general formula [II] is selected form 2,2-bis(3-phenyl-4-hydroxyphenyl) propane, 1-phenyl-1,1-bis(3-phenyl-4-hydroxyphenyl)ethane, 1-(4-methoxyphenyl)-1,1-bis(3-phenyl-4-hydroxyphenyl)ethane, 1-(4-phenoxyphenyl)-1,1-bis(3-phenyl-4-hydroxyphenyl)ethane, 1,1-bis(3-phenyl-4-hydroxyphenyl)cyclohexane, bis(3-phenyl-4-hydroxyphenyl)sulfone, or 3,3' -diphenyl-4,4' - dihydroxybiphenyl.
Claim 23
Dependent Claim
13 words
A process as defined in claim 18 wherein the carbonate precursor is phosgene.
Claim 24
Dependent Claim
251 words
A process for preparing a polycarbonate copolymer consisting essentially of repeating units represented by the following formula and repeating units represented by the general formula wherein X and Y are each independently selected from single bond, -O-, -S-, -SO 2 -, wherein: R 1 and R 2 are each independently selected from hydrogen atom; alkyl radicals of 1 to 6 carbon atoms; cycloalkyl radicals of 5 to 6 carbon atoms; wherein p represents an integer of from 0 to 3; phenyl radicals substituted at para position by'a substi-tuent selected from alkoxy radicals of 1 to 5 carbon atoms, phenoxy radical, or halogen radicals; or p-biphenylyl radical, (̵CH 2 )̵ q wherein q is an integer having a value of from 2 to 10; or wherein r is an integer having a value of from 4 to 8, X and Y may be the same or different from each other, R 3 and R 4 are each independently selected from hydrogen atom, halogen radicals, or alkyl radicals of 1 to 5 carbon atoms, and I and m independently are integers having a value of from 1 to 4 and having an reduced viscosity [η sp/c] of at least 0.2 dl/g as measured in methylene chloride at a concentration of 0.5 g/dl at 20 °C, which process comprises reacting a dihydric phenol having the general formula a dihydric phenol having the general formula wherein X, Y, R 3 , R 4 , 1, and m are as defined above, and a carbonate precursor.
Claim 25
Dependent Claim
251 words
A process for preparing a polycarbonate copolymer consisting essentially of repeating units represented by the following formula and repeating units represented by the general formula wherein X and Y are each independently selected from single bond, -O-, -S-, -SO 2 -, wherein: R 1 and R 2 are each independently selected from hydrogen atom; alkyl radicals of 1 to 6 carbon atoms; cycloalkyl radicals of 5 to 6 carbon atoms; wherein p represents an integer of from 0 to 3; phenyl radicals substituted at para position by'a substi-tuent selected from alkoxy radicals of 1 to 5 carbon atoms, phenoxy radical, or halogen radicals; or p-biphenylyl radical, (̵CH 2 )̵ q wherein q is an integer having a value of from 2 to 10; or wherein r is an integer having a value of from 4 to 8, X and Y may be the same or different from each other, R 3 and R 4 are each independently selected from hydrogen atom, halogen radicals, or alkyl radicals of 1 to 5 carbon atoms, and I and m independently are integers having a value of from 1 to 4 and having an reduced viscosity [η sp/c] of at least 0.2 dl/g as measured in methylene chloride at a concentration of 0.5 g/dl at 20 °C, which process comprises reacting a dihydric phenol having the general formula a dihydric phenol having the general formula wherein X, Y, R 3 , R 4 , 1, and m are as defined above, and a carbonate precursor.
Claim 26
Dependent Claim
41 words
A process as defined in claim 21 wherein the dihydric phenol having the general formula [III] is selected from 2,2-bis(3-phenyl-4-hydroxyphenyl)propane, 1-phenyl-1,1-bis(3-phenyl-4-hydroxypenyl)ethane, 1-(4-methoxyphenyl)-1,1-bis(3-phenyl-4-hydroxyhenyl)ethane,l-(4-phenoxyphenyl)-1,1-bis(3-phenyl-4-hydroxyphenyl)ethane, 1,1-bis(3-phenyl-4-hydroxyphenyl)cyclohexane, bis(3-phenyl-4-hydroxyphenyl) sulfone, or 3,3' -diphenyl-4,4' - dihydroxybiphenyl, and the dihydric phenol having the general formula [IV] is 2,2-bisC4-hydroxyphenyl)propane.
Claim 27
Dependent Claim
13 words
A process as defined in claim 22 wherein the carbonate precursor is phosgene.
Claim 28
Dependent Claim
48 words
A dihydric phenol having the following general formula wherein: R 5 is selected from hydrogen atom, alkyl radicals of 1 to 5 carbon atoms, or phenyl radical, and R 6 is selected from phenyl radical, phenoxyphenyl radical, alkoxyphenyl radicals of 7 to 11 carbon atoms, or p-biphenylyl radical.
Claim 29
Dependent Claim
48 words
A dihydric phenol having the following general formula wherein: R 5 is selected from hydrogen atom, alkyl radicals of 1 to 5 carbon atoms, or phenyl radical, and R 6 is selected from phenyl radical, phenoxyphenyl radical, alkoxyphenyl radicals of 7 to 11 carbon atoms, or p-biphenylyl radical.
Claim 30
Dependent Claim
39 words
A dihydric phenol as defined in claim 24 wherein R 5 is alkyl radicals of 1 to 5 carbon atoms and R 6 is selected from phenyl radical, phenoxyphenyl radical, or alkoxyphenyl radicals of 7 to 11 carbon atoms.
Claim 31
Dependent Claim
27 words
A dihydric phenol as defined in claim 25 wherein R 5 is methyl radical and R 6 is selected from phenyl radical, phenoxyphenyl radical, or methoxyphenyl radical.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.