Claims
- 1. A composition comprising a copolyestercarbonate derived from a dihydric phenol, a carbonate precursor, and from about 2 to 30 mole percent based on the dihydric phenol of an aliphatic alpha omega dicarboxylic acid or ester precursor wherein the dicarboxylic acid or ester precursor has from 8 to about 20 carbon atoms, inclusive, wherein the copolyestercarbonate is endcapped with a monophenolic compound which provides the copolyestercarbonate with better notched izod impact resistance and ductility after aging than phenol endcapped copolyestercarbonate.
- 2. The composition in accordance with claim 1 wherein the dicarboxylic acid or ester precursor has from 8 to about 14 carbon atoms, inclusive.
- 3. The composition in accordance with claim 1 wherein the mole percent is from about 8 to 15 mole percent.
- 4. The composition in accordance with claim 1 wherein the copolyestercarbonate is endcapped with a compound selected from the group consisting of isooctylphenol, isononylphenol, cumylphenol or a chromanyl compound.
- 5. The composition in accordance with claim 4 wherein the compound is paracumnylphenol.
- 6. The composition in accordance with claim 1 wherein the diacid is azelaic.
- 7. A method for processing a resin having similar molecular weight to a standard polycarbonate resin which comprises processing a copolyestercarbonate having repeat units of the structure ##STR6## wherein: R is independently selected from halogen, monovalent hydrocarbon, and monovalent hydrocarbonoxy radicals;
- R.sup.1 is independently selected from halogen, monovalent hydrocarbon, and monovalent hydrocarbonoxy radicals;
- W is selected from divalent hydrocarbon radicals, ##STR7## n and n.sup.1 are independently selected from integers having a value of from 0 to 4 inclusive;
- b is either zero or one;
- X is an aliphatic group of about 6 to 18 carbon atoms, inclusive;
- c is from about 2 to 30 mole percent of the total units c+d; and
- with less work than required for the said standard polycarbonate.
- 8. A composition comprising a copolyestercarbonate derived from a dihydric phenol, a carbonate precursor, and from about 2 to 30 mole percent based on the dihydric phenol of an aliphatic alpha omega dicarboxylic acid or ester precursor wherein the dicarboxylic acid or ester precursor has from 8 to about 20 carbon atoms, inclusive, wherein the copolyestercarbonate is endcapped with a monophenolic compound which is bulkier than pure phenol and which provides the copolyestercarbonate with better notched izod impact resistance and ductility after aging than a phenol endcapped copolyestercarbonate.
Parent Case Info
This is a divisional of co-pending application Ser. No. 07/627,517, filed on Dec. 14, 1990, abandoned, which is a continuation-in-part of application Ser. No. 07/476,068, filed on Jan. 30, 1990, now abandoned, which is a continuation-in-part of Ser. No. 07/455,118, filed on Dec. 22, 1989, also abandoned.
US Referenced Citations (6)
Divisions (1)
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Number |
Date |
Country |
Parent |
627517 |
Dec 1990 |
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Continuation in Parts (2)
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Number |
Date |
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476068 |
Jan 1990 |
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Parent |
455118 |
Dec 1989 |
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