# US 5,703,197 A · Indane polycarbonates

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- Number: US 5,703,197 A
- Document ID: US5703197A
- Status: Granted
- Kind: A
- Application number: 08/798,756
- Filed: 1997-02-13
- Granted: 1997-12-30
- Earliest claimed: 1997-02-13
- Assignees: Molecular OptoElectronics Corporation
- Inventors: Janet L. Gordon; David G. Gascoyne
- Web page: https://patentgrep.com/patent/US5703197A

## CPC

- C08G 64/06: not containing aliphatic unsaturation
- C08G: MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS

## Abstract

Linear indane polycarbonate polymers, both homopolymers and copolymers derived from biphenols and bisphenols are disclosed. The indane polycarbonates have high glass transition temperatures and exhibit good mechanical properties, good thermal stability, and good ductility even at temperatures greater than 150.degree. C. making them useful for high temperature processing applications. In addition, the clear indane polycarbonate compositions exhibit good optical properties.

## Claims

### Claim 1

A linear indane polycarbonate polymer having a glass transition temperature of at least 151.degree. C., said polymer comprising structural units having the formulas ##STR11## and ##STR12## wherein n is the mole fraction of structure II and has a value from about 0 to about 0.99;
R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, R.sub.6, R.sub.7, R.sub.8, R.sub.9, R.sub.10, R.sub.11, R.sub.12, R.sub.13, R.sub.14 and R.sub.15 are each independently hydrogen, deuterium, alkyl, cycloalkyl, alkenyl, cycloalkenyl, aryl, alkoxyaryl, alkylaryl, arylalkyl, alkoxy, alkoxyalkyl, aryloxyalkyl, haloalkyl, haloaryl, nitro, halogen, cyano, hydroxy or deuterated equivalents thereof; and
x is 0 or 1.

### Claim 2 (depends on 1)

The polymer of claim 1, wherein n is about 0.

### Claim 3 (depends on 1)

The polymer of claim 1, wherein said structural units (I) and (II) are randomly distributed in said polymer.

### Claim 4 (depends on 1)

The polymer of claim 1, wherein n is about 0.50.

### Claim 5 (depends on 4)

The polymer of claim 4, wherein said structural units (I) and (II) alternate.

### Claim 6 (depends on 1)

The polymer of claim 1, wherein R.sub.1, R.sub.2, R.sub.5, R.sub.6, R.sub.8, and R.sub.9 are hydrogen, and R.sub.3, R.sub.4, and R.sub.7 are methyl groups.

### Claim 7 (depends on 1)

The polymer of claim 1, wherein x is 0.

### Claim 8 (depends on 1)

The polymer of claim 1, wherein x is 1.

### Claim 9 (depends on 8)

The polymer of claim 8, wherein R.sub.10, R.sub.11, R.sub.12, and R.sub.13 are hydrogen, and R.sub.14 and R.sub.15 are methyl groups.

### Claim 10

A linear indane polycarbonate polymer having a glass transition temperature value of at least 151.degree. C.