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US 2003/0229181 A1Published application
Data storage media containing transparent polycarbonate blends
AssigneeGeneral Electric Company
InventorsRamesh Hariharan, Gary Charles Davis, Marc Brian Wisnudel
Life of this patent
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Abstract
The invention relates to transparent blends of polymers suitable for use in optical articles; the polymers contain residues of BCC and its derivatives, and have properties particularly suited for use in high density optical data storage media. The polymers further contain residues of other polymers, such as α-methyl polystyrene and polystyrene derivatives; bisphenols, such as bisphenol A; cycloaliphatic polyester resins, such as PCCD and its derivatives or some combination of each.
Claims32
A miscible polymer blend selected from the group consisting of:
- (i) a first polymer A, a second polymer B, and an optional additive used in optical applications, wherein
- (A) is a polycarbonate comprising structural units corresponding to structure (I)
- 19
- where
- R1 and R2 independently comprise a C1-C6 alkyl;
- X comprises CH2;
- m is an integer from 4 to 7;
- n is an integer from 1 to 4;
- and
- p is an integer from 1 to 4
- with the proviso that at least one of R1 or R2 is in the 3 or 3′ position, and
- (B) is a polymer comprising structural units corresponding to structure (II)
- 20
- where R3 comprises a C1-C6 alkyl, hydrogen, cyano or methoxy;
- (ii) a first polymer A, a second polymer C, and an optional additive used in optical applications, wherein
- (A) is a polycarbonate comprising structural units corresponding to structure (I)
- 21
- where
- R1 and R2 independently comprise a C1-C6 alkyl;
- X comprises CH2;
- m is an integer from 4 to 7;
- n is an integer from 1 to 4;
- and
- p is an integer from 1 to 4
- with the proviso that at least one of R1 or R2 is in the 3 or 3′ position, and
- (C) is a polymer comprising structural units corresponding to structure (III)
- 22
- where R4, R5 and R6 independently comprise a C1-C6 alkyl;
- (iii) a first polymer A, a second polymer D, and an optional additive used in optical applications, wherein
- (A) is a polycarbonate comprising structural units corresponding to structure (I)
- 23
- where
- R1 and R2 independently comprise a C1-C6 alkyl;
- X comprises CH2;
- m is an integer from 4 to 7;
- n is an integer from 1 to 4;
- and
- p is an integer from 1 to 4
- with the proviso that at least one of R1 or R2 is in the 3 or 3′ position, and
- (D) is a cycloaliphatic polyester resin comprising structural units corresponding to structure (IV)
- 24
- wherein R7 comprises a residue of an aryl, alkane or cycloalkane containing diol having from 6 to 20 carbon atoms and R8 comprises a decarboxylated residue of an aryl, aliphatic or cycloalkane containing diacid having form 6 to 20 carbon atoms with the proviso that at least one of R7 or R8 is cycloaliphatic;
- and
- (iiii) a first polymer B, a second polymer C, and an optional additive used in optical applications, wherein
- (B) is a polymer comprising structural units corresponding to structure (II)
- 25
- where R3 comprises a C1-C6 alkyl, hydrogen, cyano or methoxy, and
- (C) is a polymer comprising structural units corresponding to structure (III)
- 26
- where R4, R5 and R6 independently comprise a C1-C6 alkyl,
- where the polymer blend has a glass transition temperature of from 100° C. to 185° C.
48 more elements
A miscible polymer blend selected from the group consisting of:
- (i) a first polymer A, a second polymer B, a third polymer C, and an optional additive used in optical applications, wherein
- (A) is a polycarbonate comprising structural units corresponding to structure (I)
- 27
- where
- R1 and R2 independently comprise a C1-C6 alkyl;
- X comprises CH2;
- m is an integer from 4 to 7;
- n is an integer from 1 to 4;
- and
- p is an integer from 1 to 4
- with the proviso that at least one of R1 or R2 is in the 3 or 3′ position,
- (B) is a polymer comprising structural units corresponding to structure (II)
- 28
- where R3 comprises a C1-C6 alkyl, hydrogen, cyano or methoxy, and
- (C) is a polymer comprising structural units corresponding to structure (III)
- 29
- where R4, R5 and R6 independently comprise a C1-C6 alkyl
- (ii) a first polymer A, a second polymer B, a third polymer E, and an optional additive used in optical applications, wherein
- (A) is a polycarbonate comprising structural units corresponding to structure (I)
- 30
- where
- R1 and R2 independently comprise a C1-C6 alkyl;
- X comprises CH2;
- m is an integer from 4 to 7;
- n is an integer from 1 to 4;
- and
- p is an integer from 1 to 4
- with the proviso that at least one of R1 or R2 is in the 3 or 3′ position,
- (B) is a polymer comprising structural units corresponding to structure (II)
- 31
- where R3 comprises a C1-C6 alkyl, hydrogen, cyano or methoxy, and
- (E) is a polymer comprising structural units corresponding to structure (V)
- 32
- where R9 comprises a C1-C6 alkyl, hydrogen, cyano or methoxy;
- and
- (iii) a first polymer B, a second polymer C, a third polymer E, and an optional additive used in optical applications, wherein
- (B) is a polymer comprising structural units corresponding to structure (II)
- 33
- where R3 comprises a C1-C6 alkyl, hydrogen, cyano or methoxy,
- (C) is a polymer comprising structural units corresponding to structure (III)
- 34
- where R4, R5 and R6 independently comprise a C1-C6 alkyl, and
- (E) is a polymer comprising structural units corresponding to structure (V)
- 35
- where R9 comprises a C1-C6 alkyl, hydrogen, cyano or methoxy,
- where the polymer blend has a glass transition temperature of from about 100° C. to about 185° C.
43 more elements
Dependencies are inferred from the claim text.