Polyetheramide-acid-imide solution and process for preparation thereof

Claim 2

A polyether amide-acid-imide solution consisting essentially of (1) as the sole solvent a liquid hydroxy ether solvent selected from the group consisting of (i) hydroxyethers having the general formula R.sup.1 --(O--CH.sub.2 CH.sub.2)--OH where R 1 is a monovalent radical selected from the group consisting of methyl, ethyl, butyl, phenyl and benzyl; (ii) hydroxy ethers having the general formula R.sup.2 --(O--CH.sub.2 CH.sub.2 --O--CH.sub.2 CH.sub.2)--OH where R 2 is a monovalent radical selected from the group consisting of methyl, ethyl, butyl, and phenyl; and (iii) mixtures of said ether solvents and dissolved in said ether solvent (2) a polyetheramide-acid-imide having an imide content no greater than the maximum imide content at which the polyetheramide-acid-imide is soluble in the solvent at 20° C. and prepared by reacting (i) at least one aromatic bis(ether anhydride) having the formula ##STR19## with (ii) at least one organic diamine having the formula N.sub.2 N--R--NH.sub.2 at a temperature and for a time effective to form said polyetheramide-acid-imide, where Z is a member selected from the class consisting of (A) divalent organic radicals having the following formulas ##STR20## and (B) divalent organic radicals of the general formula ##STR21## where X is a member selected from the class consisting of divalent radicals of the formulas ##STR22## where y is an integer from 1 to 5; and R is a divalent organic radical selected from the class consisting of aromatic hydrocarbon radicals having from 6 to about 20 carbon atoms and halogenated derivatives thereof, alkylene radicals having from 2 to about 20 carbon atoms, cycloalkylene radicals having from 3 to about 20 carbon atoms, from C 2 to about C 8 alkylene terminated polydiorganosiloxane, and divalent radicals of the general formula ##STR23## where Q is a member selected from the class consisting of ##STR24## and x is an integer from 1 to 5.

Claim 3

The solution of claim 1, where the aromatic bis(ether anhydride) has the formula ##STR25## and Y is selected from the class consisting of --O--, --S-- ##STR26##

Claim 4

The solution of claim 1, where the aromatic bis(ether anhydride) has the formula ##STR27## and Y is selected from the class consisting of --O--, --S--, ##STR28##

Claim 5

The solution of claim 1, where the aromatic bis(ether anhydride) has the formula ##STR29## and Y is selected from the class consisting of --O--, --S--, ##STR30##

Claim 6

The solution of claim 2, where the aromatic bis(ether anhydride) is 2,2-bis[4-(3,4-dicarboxyphenoxy)phenyl]propane dianhydride.

Claim 7

The solution of claim 3, where the aromatic bis(ether anhydride) is 2,2-bis[4-(2,3-dicarboxyphenoxy)phenyl]propane dianhydride.

Claim 8

The solution of claim 1, where the organic diamine is 4,4'-oxydianiline.

Claim 9

The solution of claim 1, where the organic diamine is 4,4'-methylenedianiline.

Claim 10

The solution of claim 1, where the organic diamine is m-phenylene diamine.

Claim 11

The solution of claim 1, where the hydroxy ether solvent is 2-methoxyethanol.

Claim 12

The solution of claim 1, where the hydroxy ether solvent is 2-ethoxyethanol.

Claim 13

The solution of claim 1, where the aromatic bis(ether anhydride) is 2,2-bis[4-(3,4-dicarboxyphenoxy)phenyl]propane dianhydride, the organic diamine is 4,4'-methylenedianiline, and the hydroxy ether solvent is 2-methoxyethanol.

Claim 14

A process for preparing a polyetheramide-acid-imide solution, comprising reacting at least one aromatic bis(ether anhydride) having the formula ##STR31## with at least one organic diamine having the formula H.sub.2 N--R--NH.sub.2 in as the sole solvent a liquid hydroxy ether solvent having at least one of said bis(ether anhydride) and said diamine dissolved therein, said hydroxy ether solvent being selected from the group consisting of (i) hydroxyethers having the general formula R.sup.1 --(O--CH.sub.2 CH.sub.2)--OH where R 1 is a monovalent radical selected from the group consisting of methyl, ethyl, butyl, phenyl and benzyl; (ii) hydroxy ethers having the general formula R.sup.2 --(O--CH.sub.2 CH.sub.2 --O--CH.sub.2 CH.sub.2)--OH where R 2 is a monovalent radical selected from the group consisting of methyl, ethyl, butyl, and phenyl; and (iii) mixtures of said hydroxy ether solvents at a temperature and for a time effective to form a solution in said ether solvent of a polyetheramide-acid-imide having an imide content no greater than the maximum imide content at which the polyetheramide-acid-imide is soluble in said solvent at 20° C., where Z is a member selected from the class consisting of (A) divalent organic radicals having the following formulas ##STR32## and (b) divalent organic radicals of the general formula ##STR33## where X is a member selected from the class consisting of divalent radicals of the formulas ##STR34## where y is an integer from 1 to 5; and R is a divalent organic radical selected from the class consisting of aromatic hydrocarbon radicals having from 6 to about 20 carbon atoms and halogenated derivatives thereof, alkylene radicals having from 2 to about 20 carbon atoms, cycloalkylene radicals having from 3 to about 20 carbon atoms, from C 2 to about C 8 alkylene terminated polydiorganosiloxane and divalent radicals of the general formula ##STR35## where Q is a member selected from the class consisting of ##STR36## and x is an integer from 1 to 5.

Claim 15

A process for preparing a polyetheramide-acid-imide solution, comprising reacting at least one aromatic bis(ether anhydride) having the formula ##STR31## with at least one organic diamine having the formula H.sub.2 N--R--NH.sub.2 in as the sole solvent a liquid hydroxy ether solvent having at least one of said bis(ether anhydride) and said diamine dissolved therein, said hydroxy ether solvent being selected from the group consisting of (i) hydroxyethers having the general formula R.sup.1 --(O--CH.sub.2 CH.sub.2)--OH where R 1 is a monovalent radical selected from the group consisting of methyl, ethyl, butyl, phenyl and benzyl; (ii) hydroxy ethers having the general formula R.sup.2 --(O--CH.sub.2 CH.sub.2 --O--CH.sub.2 CH.sub.2)--OH where R 2 is a monovalent radical selected from the group consisting of methyl, ethyl, butyl, and phenyl; and (iii) mixtures of said hydroxy ether solvents at a temperature and for a time effective to form a solution in said ether solvent of a polyetheramide-acid-imide having an imide content no greater than the maximum imide content at which the polyetheramide-acid-imide is soluble in said solvent at 20° C., where Z is a member selected from the class consisting of (A) divalent organic radicals having the following formulas ##STR32## and (b) divalent organic radicals of the general formula ##STR33## where X is a member selected from the class consisting of divalent radicals of the formulas ##STR34## where y is an integer from 1 to 5; and R is a divalent organic radical selected from the class consisting of aromatic hydrocarbon radicals having from 6 to about 20 carbon atoms and halogenated derivatives thereof, alkylene radicals having from 2 to about 20 carbon atoms, cycloalkylene radicals having from 3 to about 20 carbon atoms, from C 2 to about C 8 alkylene terminated polydiorganosiloxane and divalent radicals of the general formula ##STR35## where Q is a member selected from the class consisting of ##STR36## and x is an integer from 1 to 5.

Claim 16

The process of claim 13, where the aromatic bis(ether anhydride) has the formula ##STR37## and Y is selected from the class consisting of --O--, --S--, ##STR38##

Claim 17

The process of claim 13, where the aromatic bis(ether anhydride) has the formula ##STR39## and Y is selected from the class consisting of --O--, --S--, ##STR40##

Claim 18

The process of claim 13, where the aromatic bis(ether anhydride) has the formula ##STR41## and Y is selected from the class consisting of --O--, --S--, ##STR42##

Claim 19

The process of claim 14 where the aromatic bis(ether anhydride) is 2,2-bis[4-(3,4-dicarboxyphenoxy)phenyl]propane dianhydride.

Claim 20

The process of claim 15, where the aromatic bis(ether anhydride) is 2,2-bis[4-(2,3-dicarboxyphenoxy)phenyl]propane dianhydride.

Claim 21

The process of claim 13, where the organic diamine is 4,4'-oxydianiline.

Claim 22

The process of claim 13, where the organic diamine is 4,4'-methylenedianiline.

Claim 23

The process of claim 13, where the organic diamine is m-phenylene diamine.

Claim 24

The process of claim 13, where the hydroxy ether solvent is 2-methoxyethanol.

Claim 25

The process of claim 13, where the hydroxy ether solvent is 2-ethoxyethanol.

Claim 26

The process of claim 13, where the temperature is from about 20° C. to about 30° C.