Weatherable block copolyestercarbonates and blends containing them, and method
First Claim
1. A block copolyestercarbonate comprising organic carbonate blocks alternating with arylate blocks, said arylate blocks comprising arylate structural units derived from at least one 1,3-dihydroxybenzene moiety and at least one aromatic dicarboxylic acid and having a degree of polymerization of at least about 4.
5 Assignments
0 Petitions
Accused Products
Abstract
Block copolyestercarbonates may be prepared by first conducting a reaction between at least one of resorcinol or an alkyl- or haloresorcinol and at least one aromatic dicarboxylic acid dichloride, preferably isophthaloyl dichloride, terephthaloyl dichloride or a mixture thereof, to produce a hydroxy-terminated polyester intermediate, and then conducting a reaction of the intermediate with a carbonate precursor, preferably in the presence of a dihydroxy compound such as bisphenol A. The products have excellent physical properties, including a high degree of weatherability. They may be blended with other polymers such as polycarbonates, poly(alkylene carboxylates), polyarylates, polyetherimides, and addition polymers to improve the weatherability thereof.
166 Citations
94 Claims
- 1. A block copolyestercarbonate comprising organic carbonate blocks alternating with arylate blocks, said arylate blocks comprising arylate structural units derived from at least one 1,3-dihydroxybenzene moiety and at least one aromatic dicarboxylic acid and having a degree of polymerization of at least about 4.
-
9. A block copolyestercarbonate comprising organic carbonate blocks alternating with arylate blocks, said carbonate blocks having a degree of polymerization of at least about 3 and comprising structural units derived from bisphenol A, and said arylate blocks having a degree of polymerization of at least about 4 and comprising structural units derived from unsubstituted resorcinol and a mixture of isophthalate and terephthalate residues in a ratio of about 0.25-4.0:
- 1 isophthalate to terephthalate.
- View Dependent Claims (65, 66, 71, 72, 87)
-
10. A block copolyestercarbonate comprising moieties of the formula
wherein each R1 is independently halogen or C1-4 alkyl, each R2 is independently a divalent organic radical, p is 0-3, m is at least about 3 and n is at least about 4.
-
28. A composition comprising a resinous blend of a bisphenol A polycarbonate and a block copolyestercarbonate comprising organic carbonate blocks alternating with arylate blocks, said carbonate blocks having a degree of polymerization of at least about 3 and comprising structural units derived from bisphenol A, and said arylate blocks having a degree of polymerization of at least about 4 and comprising structural units derived from unsubstituted resorcinol and a mixture of isophthalate and terephthalate residues in a ratio of about 0.25-4.0:
- 1 isophthalate to terephthalate.
-
31. A method for preparing a block copolyestercarbonate which comprises the steps of:
-
(A) preparing a hydroxy-terminated polyester intermediate having a degree of polymerization of at least 4 by the reaction of at least one 1,3-dihydroxybenzene moiety with at least one aromatic dicarboxylic acid dichloride in the presence of an acid acceptor; and
(B) conducting a reaction of said polyester intermediate with a carbonate precursor. - View Dependent Claims (32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 51, 52, 53, 54, 88, 89, 90, 91, 92, 93, 94)
wherein Rf is an alkylene, alkylidene, cycloalkylene, cycloalkylidene or arylene linkage or a mixture thereof;
or a linkage selected from the group consisting of ether, carbonyl, amine, a sulfer or phosphorus containing linkage;
Ar and Ar′
are arene radicals;
Y is a substituent selected from the group consisting of organic, inorganic and organometallic radicals;
X is halogen or a monovalent hydrocarbon group selected from the group consisting of alkyl, aryl and cycloalkyl and combinations thereof;
d represents a whole number of at least 0 up to a maximum equivalent to the number of replaceable hydrogens substituted on the aromatic rings comprising Ar or Ar′
;
e represents a whole number of from 0 to a maximum controlled by the number of replaceable hydrogens on Rf;
a, b and c represent whole numbers including 0;
when b is not zero, neither a or c may be zero, otherwise either a or c but not both may be 0; and
when b is zero, the aromatic groups can be joined by direct carbon bonds.
-
-
93. The method according to claim 31 wherein the carbonate blocks comprise structural units derived from dihydroxy aromatic reactants of the formula:
-
where independently each R is hydrogen, chlorine, bromine or a C1-30 monovalent hydrocarbon or hydrocarbonxy group, each Z is hydrogen, chlorine or bromine, subject to the proviso that at least one Z is chlorine or bromine.
-
-
94. The method according to claim 31 wherein the carbonate block comprise structural units derived from dihydroxy aromatic reactants of the formula:
-
where independently each R is as defined hereinbefore, and independently Rg and Rh are hydrogen or a C1-30 monovalent hydrocarbon group.
-
-
50. A method for preparing a block copolyestercarbonate which comprises the steps of:
-
(A) preparing a hydroxy-terminated polyester intermediate having a degree of polymerization of at least 4 by the reaction of unsubstituted resorcinol with a mixture of isophthaloyl dichloride and terephthaloyl dichloride in a ratio of about 0.25-4.0;
1 isophthaloyl to terephthaloyl; and
(B) conducting a reaction of said, polyester intermediate with phosgene in the presence of bisphenol A in a two-phase system including an aqueous phase and dichloromethane.
-
-
73. A block copolyestercarbonate comprising structural units represented by Formulas (X), (XI) and (XII),
wherein each R1 is independently halogen or C1-4 alkyl, each R2 is independently a divalent organic radical, and p is 0-3, and wherein the molar ratio of structural units represented by Formula X to structural units represented by Formula XI ranges from about 99: - 1 to about 1;
1. - View Dependent Claims (74, 75, 76, 77, 78, 79, 80, 81, 82)
- 1 to about 1;
Specification