EP0184592A1
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EP
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Novel acid-extended copolyamideimides and method for their preparation
Assignee: General Electric Co
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Filing: 1984-12-13
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Granted: —
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Expires: 2004-12-13
Abstract
Abstract Polyamideimides are prepared by first reacting a diamine, preferably an aromatic diamine, with a carboxy anhydride such as trimellitic anhydride and a dianhydride such as bisphenol A dianhydride; and then reacting mixtures of the resulting prepolymers and dicarboxylic acids, or functional derivatives thereof, with a diisocyanate or diamine, preferably an aromatic diisocyanate.
Inventors
- 👤 Donald Allen Bolon
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 08:49
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/64; C08G18/6415; C08G18/6438; C08G73/00; C08G73/06; C08G73/10; C08G73/14; H; H01; H01B; H01B3/00; H01B3/18; H01B3/30
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
193 words
A method for preparing an acid-extended copolyamide polymer whichcomprises the steps of: (1) reacting, under conditions whereby all water of reaction is removed: (A) at least one diamine having the formula wherein R 1 is a divalent hydrocarbon-based radical, with (B) at least one carboxy anhydride of the formula wherein R 2 is a trivalent hydrocarbon-based radical, and (C) at least one dianhydride.of the formula wherein R 3 is a tetravalent hydrocarbon-based radical; the molar ratio of reagent C to reagent B being at least about 0.25:1 and the ratio of equivalents of reagent A to anhydride equivalents of reagents B and C combined being about 1:1; and subsequently (2) reacting a mixture of (D) the product of step 1, or a functional derivative thereof, and (F) at least one dicarboxylic acid having the formula wherein R is a divalent hydrocarbon-based radical containing about 3-12 carbon atoms or a functional derivative thereof, with (E) at least one of diisocyanates having the formula and diamines having the formula wherein R 4 is a divalent hydrocarbon-based or polymeric radical and each of R 5 and R 6 is independently hydrogen or a lower hydrocarbon-based radical.
Claim 2
Independent Claim
193 words
A method for preparing an acid-extended copolyamide polymer whichcomprises the steps of: (1) reacting, under conditions whereby all water of reaction is removed: (A) at least one diamine having the formula wherein R 1 is a divalent hydrocarbon-based radical, with (B) at least one carboxy anhydride of the formula wherein R 2 is a trivalent hydrocarbon-based radical, and (C) at least one dianhydride.of the formula wherein R 3 is a tetravalent hydrocarbon-based radical; the molar ratio of reagent C to reagent B being at least about 0.25:1 and the ratio of equivalents of reagent A to anhydride equivalents of reagents B and C combined being about 1:1; and subsequently (2) reacting a mixture of (D) the product of step 1, or a functional derivative thereof, and (F) at least one dicarboxylic acid having the formula wherein R is a divalent hydrocarbon-based radical containing about 3-12 carbon atoms or a functional derivative thereof, with (E) at least one of diisocyanates having the formula and diamines having the formula wherein R 4 is a divalent hydrocarbon-based or polymeric radical and each of R 5 and R 6 is independently hydrogen or a lower hydrocarbon-based radical.
Claim 3
Dependent Claim
59 words
A method according to claim 1 wherein reagent D is said prepolymer, reagent E is at least one diisocyanate, and each of R 1 and R 4 is independently an aromatic hydrocarbon radical containing about 6-20 carbon atoms or a halogenated derivative thereof, an alkylene or cycloalkylene radical containing about 2-20 carbon atoms or a bis-alkylene poly(dialkyl- siloxane) radical.
Claim 4
Dependent Claim
43 words
.A method according to claim 2 wherein each of R 2 and R 3 is an aromatic radical containingabout 6-20 carbon atoms and the ratio of equivalents of reagents D and F combined to reagent E is from about u.67:1 to about 1.5:1.
Claim 5
Dependent Claim
21 words
A method according to claim 3 wherein R is an alkylene radical containino 3-6 carbon atoms or an aromatic hydrocarbon radical.
Claim 6
Dependent Claim
36 words
A method according to claim 4 wherein the molar ratio of reagent C to reagent B is at least about 0.5:1 and the molar ratio of reagent F to reagent E is up to about 1.5:1.
Claim 7
Dependent Claim
26 words
A method according to claim 5 wherein each of R 1 and R 4 is an aromatic hydrocarbon radical, R 2 is and R 3 is
Claim 8
Dependent Claim
19 words
A method according to claim 6 wherein R 7 is at least one of the m- and p-phenylene radicals.
Claim 9
Dependent Claim
30 words
A method according to claim 7 wherein reagent A is m-phenylenediamine, m-toluenediamine or 4,4-diaminodiphenylmethane and reagent E is at least one of 2,4-toluene diisocyanate, 2,6-toluene diisocyanate and 4,4'-methylene bis(phenyl isocyanate).
Claim 10
Dependent Claim
10 words
An acid-extended copolyamideimide prepared by the method of claim 1.
Claim 11
Dependent Claim
10 words
An acid-extended copolyamideimide prepared by the method of claim 3.
Claim 12
Dependent Claim
10 words
An acid-extended copolyamideimide preoared by the method of claim 4.
Claim 13
Dependent Claim
11 words
An acid-extended conolyami eimide nreoared by the method of claim 7.
Claim 14
Dependent Claim
90 words
An acid-extended copolyamideimide consisting essentially of units having the formulas and wherein each of R and R 4 is independently a divalent hydrocarbon-based radical, R 2 is a trivalent hydrocarbon-based radical, R 3 is a tetravalent hydrocarbon-based radical, each of R 5 and R 6 is independently hydrogen or a hydrocarbon-based radical, R is a divalent hydrocarbon-based radical containing about 3-12 carbon atoms and the average value of n is at least 0.5; the ratio of units of formula XI to those of formula X being up to about 2:1.
Claim 15
Dependent Claim
90 words
An acid-extended copolyamideimide consisting essentially of units having the formulas and wherein each of R and R 4 is independently a divalent hydrocarbon-based radical, R 2 is a trivalent hydrocarbon-based radical, R 3 is a tetravalent hydrocarbon-based radical, each of R 5 and R 6 is independently hydrogen or a hydrocarbon-based radical, R is a divalent hydrocarbon-based radical containing about 3-12 carbon atoms and the average value of n is at least 0.5; the ratio of units of formula XI to those of formula X being up to about 2:1.
Claim 16
Dependent Claim
43 words
A copolyamideimide according to claim 13 wherein each of R and R 4 is indenendently an aromatic hydrocarbon radical containing about 6-20 carbon atoms or a halogenated derivative thereof, an alkylene or cycloalkylene radical containin; about 2-20 carbon atoms or a bis-alkylenepoly(dialkylsiloxane) radical.
Claim 17
Dependent Claim
32 words
A copolyamideimide according to claim 14 wherein each of R 2 and R 3 is an aromatic radical containing about 6-20 carbon atoms and each of R 5 and R is hydrogen.
Claim 18
Dependent Claim
22 words
A copolyamideimide according to claim 15 wherein R 7 is an alkylene radical containing 3-6 carbon atoms or an aromatic hydrocarbon radical.
Claim 19
Dependent Claim
36 words
A copolyamideimide according to claim 16 wherein the average value of n is at least 1 and the ratio of units of formula XI to those of formula X is from about 0.67:1 to about 0.5:1.
Claim 20
Dependent Claim
34 words
A copolyamideimide according to claim 17 wherein each of R 1 and R is an aromatic hydrocarbon radical , R 2 is R3 is and the average value of n is at least 1.
Claim 21
Dependent Claim
19 words
A copolyamide according to claim 18 wherein R 7 is at least one of the m- and p-phenylene radicals.
Claim 22
Dependent Claim
24 words
A copolyamideimide according to claim 19 wherein R 1 is and R 4 is at least one of the 2,4-tolylene, 2,6-tolylene and 4,4'-methylenebis-phenyl radicals.
References Cited (Backward Citations)
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