Aromatic polyester phosphonates
First Claim
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1. A polyester phosphonate of a number average molecular weight of at least 11,000, said phosphonate being a co-condensate containing(A) from 5 to 95 mol % of recurring structural units of the formula ##STR11## (B) from 95 to 5 mol % of recurring structural units of the formula ##STR12## (C) end groups linked to phosphorous selected from the group consisting of:
- ##STR13## and (D) end groups linked to oxygen selected from the group consisting of ##STR14## wherein X and Y are each at least one member selected from the group consisting of phenylene, biphenylene, C1 -C4 alkylenebisphenylene, C5 -C12 cycloalkylenebisphenylene, thiobisphenylene, oxybisphenylene, sulphonylbisphenylene, carbonylbisphenylene, naphthylene, each of said phenylene-containing moieties substituted by 1 to 4 moieties selected from the group consisting of C1 -C4 alkyl, fluorine, chlorine and bromine and naphthylene substituted by from 1 to 6 moieties selected from the group consisting of C1 -C4 alkyl, fluorine, chlorine and bromine;
R1 and R3 are each separately selected from the group consisting of C1 -C12 alkyl, C2 -C12 alkenyl, C6 -C30 cycloalkyl, C6 -C30 cycloalkenyl, C6 -C30 aryl, C6 -C30 aralkyl, C6 -C30 aralkenyl and said aryl-containing moiety substituted by from 1 to 5 moieties selected from the group consisting of C1 -C4 alkyl, fluorine, chlorine and bromine;
E is selected from the group consisting of --H, ##STR15## R2, R4, R5 and R6 are each separately selected from the group consisting of C1 -C4 alkyl, fluorine, chlorine and bromine and k, m, x, y and z are each separately 0 to 5.
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Abstract
Polyester phosphonates based on aromatic dicarboxylic acids and aromatic dihydroxy compounds exhibit a low flammability and surprisingly improved mechanical characteristics, particularly an excellent dimensional heat stability.
57 Citations
5 Claims
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1. A polyester phosphonate of a number average molecular weight of at least 11,000, said phosphonate being a co-condensate containing
(A) from 5 to 95 mol % of recurring structural units of the formula ##STR11## (B) from 95 to 5 mol % of recurring structural units of the formula ##STR12## (C) end groups linked to phosphorous selected from the group consisting of: - ##STR13## and (D) end groups linked to oxygen selected from the group consisting of ##STR14## wherein X and Y are each at least one member selected from the group consisting of phenylene, biphenylene, C1 -C4 alkylenebisphenylene, C5 -C12 cycloalkylenebisphenylene, thiobisphenylene, oxybisphenylene, sulphonylbisphenylene, carbonylbisphenylene, naphthylene, each of said phenylene-containing moieties substituted by 1 to 4 moieties selected from the group consisting of C1 -C4 alkyl, fluorine, chlorine and bromine and naphthylene substituted by from 1 to 6 moieties selected from the group consisting of C1 -C4 alkyl, fluorine, chlorine and bromine;
R1 and R3 are each separately selected from the group consisting of C1 -C12 alkyl, C2 -C12 alkenyl, C6 -C30 cycloalkyl, C6 -C30 cycloalkenyl, C6 -C30 aryl, C6 -C30 aralkyl, C6 -C30 aralkenyl and said aryl-containing moiety substituted by from 1 to 5 moieties selected from the group consisting of C1 -C4 alkyl, fluorine, chlorine and bromine;
E is selected from the group consisting of --H, ##STR15## R2, R4, R5 and R6 are each separately selected from the group consisting of C1 -C4 alkyl, fluorine, chlorine and bromine and k, m, x, y and z are each separately 0 to 5. - View Dependent Claims (2, 3, 4, 5)
- ##STR13## and (D) end groups linked to oxygen selected from the group consisting of ##STR14## wherein X and Y are each at least one member selected from the group consisting of phenylene, biphenylene, C1 -C4 alkylenebisphenylene, C5 -C12 cycloalkylenebisphenylene, thiobisphenylene, oxybisphenylene, sulphonylbisphenylene, carbonylbisphenylene, naphthylene, each of said phenylene-containing moieties substituted by 1 to 4 moieties selected from the group consisting of C1 -C4 alkyl, fluorine, chlorine and bromine and naphthylene substituted by from 1 to 6 moieties selected from the group consisting of C1 -C4 alkyl, fluorine, chlorine and bromine;
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Current AssigneeBayer AG
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Original AssigneeBayer AG
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InventorsFreitag, Dieter, Schmidt, Manfred, Reinking, Klaus, Bottenbruch, Ludwig, Rohr, Harry, Medem, Harald
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Primary Examiner(s)Sutto, Anton H.
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Application NumberUS06/160,957Time in Patent Office684 DaysField of Search260/930US Class Current528/167CPC Class CodesC08G 63/6926 Dicarboxylic acids and dihy...C08G 79/04 Phosphorus linked to oxygen...
