Claims
- 1. A copolycarbonate resin with a melt flow rate of 1 to 24 gram/10 min. at 300.degree. C. (ASTM 1238) consisting essentially of:
- 2 up to 15 mole percent of the sulfur containing structural unit ##STR7## wherein R.sub.1 and R.sub.2 are hydrogen or lower alkyl groups having 1 to 4 carbon atoms and n equals 0 to 2, and from greater than 85 to 98 mole percent of the structural unit ##STR8## wherein X is hydrogen, a C.sub.1 to C.sub.4 alkyl radical or a halogen and n.sub.1 equals 1 or 2, and Z is a single bond, an alkylene or alkylidene radical with 1 to 7 carbon atoms, a cycloalkylene or cycloalkylidene radical with 5 to 12 carbon atoms, --O--, --CO--, --SO-- or --SO.sub.2 --.
- 2. The copolycarbonate resin of claim 1 wherein Z is selected from the group consisting of methylene and isopropylidene.
- 3. The copolycarbonate resin of claim 1 wherein X is selected from the group consisting of hydrogen, a C.sub.1 -C.sub.4 alkyl radical, Br and Cl.
- 4. The copolycarbonate resin of claim 3 wherein X is selected from the group consisting of hydrogen and a C.sub.1 -C.sub.4 alkyl radical.
- 5. The copolycarbonate resin of claim 1 wherein the sulfur containing structural unit is: ##STR9##
- 6. The copolycarbonate resin of claim 2 wherein X is hydrogen and Z is isopropylidene.
- 7. A copolycarbonate resin prepared by a process comprising reacting the ingredients consisting essentially of:
- a. thiodiphenol; and
- b. a compound of the structural formula ##STR10## wherein X is hydrogen, a C.sub.1 to C.sub.4 alkyl group, or a halogen and n.sub.1 equals 1 or 2 and Z is a single bond, an alkylene or alkylidene radical with 1 to 7 carbon atoms, a cycloalkylene or cycloalkylidene radical with 5 to 12 carbon atoms, --O--, --CO--, --SO-- or --SO.sub.2 -- with a carbonic acid derivative selected from the group consisting of phosgene, carbonyl bromide, the bischloroformic esters of (a), and (b) and diaryl carbonates, under conditions selected to produce a copolycarbonate with a melt flow rate of 1 to 24 gram/10 min. at 300.degree. C. (ASTM 1238) wherein (a) is present in the reaction mixture from 2 to 15 mole percent and (b) is present from 85 to 98 mole percent based on the total moles of both (a) and (b).
- 8. The copolycarbonate of claim 7 wherein the thiodiphenol (a) is 4,4'-thiodiphenol.
- 9. The copolycarbonate of claim 7 wherein Z is selected from the group consisting of methylene and isopropylidene.
- 10. The copolycarbonate of claim 7 wherein (b) is bisphenol A.
Parent Case Info
This application is a continuation of application Ser. No. 872,393, filed Jan. 25, 1978 which is a continuation-in-part of our copending application Ser. No. 767,607, filed Feb. 10, 1977, which is a continuation-in-part of application Ser. No. 687,490, filed May 18, 1976 all now abandoned.
US Referenced Citations (4)
Number |
Name |
Date |
Kind |
3023101 |
Ossenbrunner |
Feb 1962 |
|
3250744 |
Schnell et al. |
May 1966 |
|
3398212 |
Jackson et al. |
Aug 1968 |
|
3437631 |
Cleveland |
Apr 1969 |
|
Non-Patent Literature Citations (1)
Entry |
O. V. Shirnova et al., Polycarbonates & Mixed Polycarbonates Based on Di-(4-Hydroxyphenyl)Sulphide, 1968, (pp. 111-118), D. I. Mendeleyev Moscow Chemical and Technological Institute. |
Continuations (1)
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Number |
Date |
Country |
Parent |
872393 |
Jan 1978 |
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Continuation in Parts (2)
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Number |
Date |
Country |
Parent |
767607 |
Feb 1977 |
|
Parent |
687490 |
May 1976 |
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