Mixtures containing prepolymers, which can be converted to heat-resistant foamed plastics

Claim 2

A mixture which can be converted to a heat-resistant foamed plastic, characterised in that it contains (1) a thermoplastic prepolymer prepared by heating, to 50° - 170°C, a mixture containing (a) a diimide or triimide of the formula I ##EQU7## in which A denotes a n-valent organic radical with at least 2 and at most 30 carbon atoms, R denotes hydrogen or methyl and n denotes 2 or 3 and (b) an azomethine of the formula II, III or IV ##EQU8## in which R 1 denotes a hydrogen atom, an aliphatic, cycloaliphatic, cycloaliphatic-aliphatic or aromatic radical with at most 12 carbon atoms, an araliphatic radical with at most 20 carbon atoms or a heterocyclic or heterocyclic-aliphatic radical, R 2 and R 3 have the same meaning as R 1 , with the exception of hydrogen, and R 1 together with R 2 and with the inclusion of the carbon atom carrying the two substituents can also denote a cycloaliphatic ring system, and E represents a divalent organic radical with 2 to 30 carbon atoms, together with (2) a solid blowing agent for foaming and optionally (3) a polyamine of the formula V d--(nh.sub.2).sub.y (V) in which D denotes a y-valent organic radical with 2 to 40 carbon atoms and y denotes a number from 2 to 4.

Claim 3

A mixture which can be converted to a heat-resistant foamed plastic, according to claim 1, characterized in that it contains (1) a thermoplastic prepolymer prepared by heating, to 50° - 170°C, a mixture containing (a) a diimide or triimide of the formula I ##EQU9## in which A denotes a n-valent organic radical with at least 2 and at most 30 carbon atoms, R denotes hydrogen or methyl and n denotes 2 or 3 and (b) an azomethine of the formula II, III or IV ##EQU10## in which R 1 denotes a hydrogen atom, an aliphatic, cycloaliphatic, cycloaliphatic-aliphatic or aromatic radical with at most 12 carbon atoms, an araliphatic radical with at most 20 carbon atoms or a heterocyclic or heterocyclic-aliphatic radical, R 2 and R 3 have the same meaning as R 1 , with the exception of hydrogen, and R 1 together with R 2 and with the inclusion of the carbon atom carrying the two substituents can also denote a cycloaliphatic ring system, and E represents a divalent organic radical with 2 to 30 carbon atoms, and (c) a polyamine of the formula V d--(nh.sub.2).sub.y (V) in which D denotes a y-valent organic radical with 2 to 40 carbon atoms and y denotes a number from 2 to 4, together with (2) a solid blowing agent for foaming.

Claim 4

A mixture which can be converted to a heat-resistant foamed plastic, characterised in that it contains (1) a thermoplastic prepolymer prepared by heating, to 50°-170°C, a mixture containing (a) a diimide or triimide of the formula I ##EQU11## in which A denotes an n-valent organic radical with at least 2 and at most 30 carbon atoms, R denotes hydrogen or methyl and n denotes 2 or 3 and (b) a polyamine of the formula V d--(nh.sub.2).sub.y (V) in which D denotes a y-valent organic radical with 2 to 40 carbon atoms and y denotes a number from 2 to 4, together with (2) an azomethine of the formula II, III or IV ##EQU12## in which R 1 denotes a hydrogen atom, an aliphatic, cycloaliphatic, cycloaliphatic-aliphatic or aromatic radical with at most 12 carbon atoms, an araliphatic radical with at most 20 carbon atoms or a heterocyclic or heterocyclic-aliphatic radical, R 2 and R 3 have the same meaning as R 1 , with the exception of hydrogen, and R 1 together with R 2 and with the inclusion of the carbon atom carrying the two substituents can also denote a cycloaliphatic ring system, and E represents a divalent organic radical with 2 to 30 carbon atoms, and (3) a solid blowing agent for foaming.

Claim 5

A mixture which can be converted to a heat-resistant foamed plastic, characterised in that it contains (1) a thermoplastic prepolymer prepared by heating, to 50°-170°C, a mixture containing (a) a diimide or triimide of the formula I ##EQU11## in which A denotes an n-valent organic radical with at least 2 and at most 30 carbon atoms, R denotes hydrogen or methyl and n denotes 2 or 3 and (b) a polyamine of the formula V d--(nh.sub.2).sub.y (V) in which D denotes a y-valent organic radical with 2 to 40 carbon atoms and y denotes a number from 2 to 4, together with (2) an azomethine of the formula II, III or IV ##EQU12## in which R 1 denotes a hydrogen atom, an aliphatic, cycloaliphatic, cycloaliphatic-aliphatic or aromatic radical with at most 12 carbon atoms, an araliphatic radical with at most 20 carbon atoms or a heterocyclic or heterocyclic-aliphatic radical, R 2 and R 3 have the same meaning as R 1 , with the exception of hydrogen, and R 1 together with R 2 and with the inclusion of the carbon atom carrying the two substituents can also denote a cycloaliphatic ring system, and E represents a divalent organic radical with 2 to 30 carbon atoms, and (3) a solid blowing agent for foaming.

Claim 6

A mixture according to claim 1, characterised in that in addition to the indicated constituents it also contains a surface-active agent and/or a kicker or activator for the blowing agent.

Claim 7

A mixture according to claim 1, characterised in that it contains a prepolymer, prepared from a triimide or diimide of the formula I, in which A denotes an alkylene group with 2 to 20 carbon atoms, an aralkylene group with 8 to 12 carbon atoms, a cyclohexylene group or a phenylene group, and the phenylene and cyclohexylene groups can be substituted by methyl or chlorine and/or can be bonded to phenylene or cyclohexylene groups via a simple valency bond or via a bridge member.

Claim 8

A mixture according to claim 1, characterised in that it contains a prepolymer, prepared from a diimide or triimide of the formula I, in which A denotes an aromatic radical with 6 - 20 carbon atoms.

Claim 9

A mixture according to claim 6, characterised in that it contains a prepolymer, prepared from a diimide of the formula I, in which A denotes the p-phenylene group or two phenylene groups bonded to one another directly or via a methylene group or an oxygen atom.

Claim 10

A mixture according to claim 1, characterised in that it contains a prepolymer for the preparation of which 1,6-benzylidene-hexamethylenediamine or N,N'-benzylidene-diaminodiphenylmethane is used as the azomethine.

Claim 11

A mixture according to claim 3, characterised in that it contains 1,6-benzylidene-hexamethylenediamine or N,N'-benzylidene-diaminodiphenylmethane as the azomethine.

Claim 12

A mixture according to claim 2, characterised in that it contains a prepolymer for the preparation of which a polyamine of the formula VI ##SPC5## in which R 4 and R 5 each denotes hydrogen, alkyl, cycloalkyl, aryl or aralkyl or together denote an alkylene group, is used as the polyamine.

Claim 13

A mixture according to claim 2, characterised in that it contains a prepolymer for the preparation of which 4,4'-diaminodiphenylmethane, tri-(4-aminophenyl)-phosphate or tri-(4-aminophenyl)-thiophosphate is used.

Claim 14

Mixture according to claim 1, characterised in that it contains, as the polyamine of the formula V, a polyamine of the formula VI ##SPC6## in which R 4 and R 5 each denotes hydrogen, alkyl, cycloalkyl, aryl or aralkyl or together denote an alkylene group.

Claim 15

A mixture according to claim 1, characterised in that it contains 4,4'-diaminodiphenylmethane, tri-(4-aminophenyl)-phosphate or tri-(4-aminophenyl)-thiophosphate as the polyamine of the formula V.

Claim 16

A mixture according to claim 1, characterised in that it contains a prepolymer of (a) a triimide or diimide of the formula I, in which A denotes one of the following groups: ##SPC7## and R denotes hydrogen, and (b) an azomethine of the formula II or III, in which R 1 denotes hydrogen, R 2 and R 3 each denotes a phenyl group and E denotes one of the following groups ##SPC8## and optionally (c) a polyamine of the formula V, in which y represents the number 2 or 3.

Claim 17

A process for the preparation of heat-resistant foams, characterised in that a mixture containing (1) a thermoplastic prepolymer obtained from a mixture containing (a) a diimide or triimide of the formula I ##EQU13## in which A denotes a n-valent organic radical with at least 2 and at most 30 carbon atoms, R denotes hydrogen or methyl and n denotes 2 or 3 and (b) an azomethine of the formula II, III or IV ##EQU14## in which R 1 denotes a hydrogen atom, an aliphatic, cycloaliphatic, cycloaliphatic-aliphatic or aromatic radical with at most 12 carbon atoms, an araliphatic radical with at most 20 carbon atoms or a heterocyclic or heterocyclic-aliphatic radical, R 2 and R 3 have the same meaning as R 1 , with the exception of hydrogen, and R 1 together with R 2 and with the inclusion of the carbon atom carrying the two substituents can also denote a cycloaliphatic ring system, and E represents a divalent organic radical with 2 to 30 carbon atoms, which has been warmed to 50° - 170°C, and (2) a solid blowing agent for foaming and optionally (3) a polyamine of the formula V d--(nh.sub.2).sub.y (V) in which D denotes a y-valent organic radical with 2 to 40 carbon atoms and y denotes a number from 2 to 4, is warmed to a temperature of 80° - 120°C.

Claim 18

A process for the preparation of heat-resistant foams, characterised in that a mixture containing (1) a thermoplastic prepolymer obtained from a mixture containing (a) a diimide or triimide of the formula I ##EQU13## in which A denotes a n-valent organic radical with at least 2 and at most 30 carbon atoms, R denotes hydrogen or methyl and n denotes 2 or 3 and (b) an azomethine of the formula II, III or IV ##EQU14## in which R 1 denotes a hydrogen atom, an aliphatic, cycloaliphatic, cycloaliphatic-aliphatic or aromatic radical with at most 12 carbon atoms, an araliphatic radical with at most 20 carbon atoms or a heterocyclic or heterocyclic-aliphatic radical, R 2 and R 3 have the same meaning as R 1 , with the exception of hydrogen, and R 1 together with R 2 and with the inclusion of the carbon atom carrying the two substituents can also denote a cycloaliphatic ring system, and E represents a divalent organic radical with 2 to 30 carbon atoms, which has been warmed to 50° - 170°C, and (2) a solid blowing agent for foaming and optionally (3) a polyamine of the formula V d--(nh.sub.2).sub.y (V) in which D denotes a y-valent organic radical with 2 to 40 carbon atoms and y denotes a number from 2 to 4, is warmed to a temperature of 80° - 120°C.

Claim 19

A process according to claim 15 for the preparation of heat-resistant foamed plastics, characterised in that a mixture containing (1) a thermoplastic prepolymer prepared from (a) a diimide or triimide of the formula I ##EQU15## in which A denotes a n-valent organic radical with at least 2 and at most 30 carbon atoms, R denotes hydrogen or methyl and n denotes 2 or 3 and (b) an azomethine of the formula II, III or IV ##EQU16## in which R 1 denotes a hydrogen atom, an aliphatic, cycloaliphatic, cycloaliphatic-aliphatic or aromatic radical with at most 12 carbon atoms, an araliphatic radical with at most 20 carbon atoms or a heterocyclic or heterocyclic-aliphatic radical, R 2 and R.sub. 3 have the same meaning as R 1 , with the exception of hydrogen, and R 1 together with R 2 and with the inclusion of the carbon atom carrying the two sustituents can also denote a cycloaliphatic ring system, and E represents a divalent organic radical with 2 to 30 carbon atoms, and (c) a polyamine of the formula V d--(nh.sub.2).sub.y (V) in which D denotes a y-valent organic radical with 2 to 40 carbon atoms and y denotes a number from 2 to 4, by warming to 50° - 170°C, and (2) a solid blowing agent for foaming, is warmed to a temperature of 80° - 220°C.

Claim 20

A process for the preparation of heat-resistant foamed plastics, characterised in that a mixture containing (1) a thermoplastic prepolymer prepared from (a) a diimide or triimide of the formula I ##EQU17## in which A denotes a n-valent organic radical with at least 2 and at most 30 carbon atoms, R denotes hydrogen or methyl and n denotes 2 or 3 and b) a polyamine of the formula V d--(nh.sub.2).sub.y (V) in which D denotes a y-valent organic radical with 2 to 40 carbon atoms and y denotes a number from 2 to 4, by warming the components to 50° - 170°C, and (2) an azomethine of the formula II, III or IV ##EQU18## in which R 1 denotes a hydrogen atom, an aliphatic, cycloaliphatic, cycloaliphatic-aliphatic or aromatic radical with at most 12 carbon atoms, an araliphatic radical with at most 20 carbon atoms or a heterocyclic or heterocyclic-aliphatic radical, R 2 and R 3 have the same meaning as R 1 , with the exception of hydrogen, and R 1 together with R 2 and with the inclusion of the carbon atom carrying the two substituents can also denote a cycloaliphatic ring system, and E represents a divalent organic radical with 2 to 30 carbon atoms, and (3) a solid blowing agent for foaming, is warmed to a temperature of 80° - 220°C.

Claim 21

A process for the preparation of heat-resistant foamed plastics, characterised in that a mixture containing (1) a thermoplastic prepolymer prepared from (a) a diimide or triimide of the formula I ##EQU17## in which A denotes a n-valent organic radical with at least 2 and at most 30 carbon atoms, R denotes hydrogen or methyl and n denotes 2 or 3 and b) a polyamine of the formula V d--(nh.sub.2).sub.y (V) in which D denotes a y-valent organic radical with 2 to 40 carbon atoms and y denotes a number from 2 to 4, by warming the components to 50° - 170°C, and (2) an azomethine of the formula II, III or IV ##EQU18## in which R 1 denotes a hydrogen atom, an aliphatic, cycloaliphatic, cycloaliphatic-aliphatic or aromatic radical with at most 12 carbon atoms, an araliphatic radical with at most 20 carbon atoms or a heterocyclic or heterocyclic-aliphatic radical, R 2 and R 3 have the same meaning as R 1 , with the exception of hydrogen, and R 1 together with R 2 and with the inclusion of the carbon atom carrying the two substituents can also denote a cycloaliphatic ring system, and E represents a divalent organic radical with 2 to 30 carbon atoms, and (3) a solid blowing agent for foaming, is warmed to a temperature of 80° - 220°C.

Claim 22

A process according to claim 15, characterised in that the mixture is warmed to 160° - 200°C.

Claim 23

Process according to claim 15, characterised in that a mixture which in addition to the indicated constituents also contains a surface-active agent and/or a kicker or activator for the blowing agent is warmed.

Claim 24

A process according to claim 15, characterised in that a mixture of which the prepolymer is prepared from a mixture containing, as the diimide or triimide, a compound of the formula I, in which A denotes an alkylene group with 2 to 20 carbon atoms, an aralkylene group with 8 to 12 carbon atoms, a cyclohexylene group or a phenylene group, and the phenylene and cyclohexylene groups can be substituted by methyl or chlorine and/or can be bonded to phenylene or cyclohexylene groups via a siple valency bond or via a bridge member, is warmed.

Claim 25

A process according to claim 15, characterised in that a mixture of which the prepolymer is prepared from a mixture containing, as the diimide or triimide, a compound of the formula I, in which A denotes an aromatic radical with 6 - 20 carbon atoms, is warmed.

Claim 26

A process according to claim 21, characterised in that a mixture of which the prepolymer is prepared from a mixture containing, as the diimide, a compound of the formula I, in which A denotes the p-phenylene group or two phenylene groups bonded to one another directly or via a methylene group or an oxygen atom, is warmed.

Claim 27

A process according to claim 15, characterised in that a mixture containing a prepolymer for the preparation of which 1,6-benzylidene-hexamethylenediamine or N,N'-benzylidene-diaminodiphenylmethane is used as the azomethine, is warmed.

Claim 28

A process according to claim 17, characterised in that a mixture which contains 1,6-benzylidene-hexamethylenediamine or N,N'-benzylidene-diaminodiphenylmethane as the azomethine is warmed.

Claim 29

A process according to claim 16, characterised in that a mixture which contains a prepolymer, for the preparation of which the polyamine used is a polyamine of the formula VI ##SPC9## in which R 4 and R 5 each denotes hydrogen, alkyl, cycloalkyl, aryl or aralkyl or together denote an alkylene group, is warmed.

Claim 30

Process according to claim 16, characterised in that a mixture which contains a prepolymer, for the preparation of which 4,4'-diaminodiphenylmethane, tri-(4-aminophenyl)-phosphate or tri-(4-aminophenyl)-thiophosphate is used as the polyamine of the formula V, is warmed.

Claim 31

Process according to claim 5, characterised in that a mixture which contains, as the polyamine, a polyamine of the formula VI ##SPC10## in which R 4 and R 5 each denotes hydrogen, alkyl, cycloalkyl, aryl or aralkyl or together denote an alkylene group, is warmed.

Claim 32

Process according to claim 15, characterised in that a mixture which contains 4,4'-diaminodiphenylmethane, tri-(4-aminophenyl)-phosphate or tri-(4-aminophenyl)-thiophosphate as the polyamine of the formula V is warmed.

Claim 33

Process according to claim 15, characterised in that a mixture which contains a prepolymer prepared from (a) a triimide or diimide of the formula I, in which A denotes one of the following groups ##SPC11## and R denotes hydrogen and (b) an azomethine of the formula II or III, in which R 1 denotes hydrogen, R 2 and R 3 each denotes a phenyl group and E denotes one of the following groups ##SPC12## and optionally a polyamine of the formula V, in which y denotes the number 2 or 3, is warmed.

Claim 34

A mixture according to claim 3 characterised in that in addition to the indicated constituents it also contains a surface-active agent and/or a kicker or activator for the blowing agent.

Claim 35

A mixture according to claim 3, characterised in that it contains a prepolymer, prepared from a triimide or diimide of the formula I, in which A denotes an alkylene group with 2 to 20 carbon atoms, an aralkylene group with 8 to 12 carbon atoms, a cyclohexylene group or a phenylene group, and the phenylene and cyclohexylene groups can be substituted by methyl or chlorine and/or can be bonded to phenylene or cyclohexylene groups via a simple valency bond or via a bridge member.

Claim 36

A mixture according to claim 3, characterised in that it contains a prepolymer, prepared from a diimide or triimide of the formula I, in which A denotes an aromatic radical with 6 - 20 carbon atoms.

Claim 37

A mixture according to claim 3, characterised in that it contains a prepolymer for the preparation of which a polyamine of the formula VI ##SPC13## in which R 4 and R 5 each denotes hydrogen, alkyl, cycloalkyl, aryl or aralkyl or together denote an alkylene group, is used as the polyamine.

Claim 38

A mixture according to claim 3, characterised in that it contains a prepolymer for the preparation of which 4,4'-diaminodiphenylmethane, tri-(4-aminophenyl)-phosphate or tri-(4-aminophenyl)-thiophosphate is used.

Claim 39

A process according to claim 17, characterised in that the mixture is warmed to 160°-200°C.

Claim 40

A process according to claim 17, characterised in that a mixture which in addition to the indicated constituents also contains a surface-active agent and/or a kicker or activator for the blowing agent is warmed.

Claim 41

A process according to claim 17, characterised in that a mixture of which the prepolymer is prepared from a mixture containing, as the diimide or triimide, a compound of the formula I, in which A denotes an alkylene group with 2 to 20 carbon atoms, an aralkylene group with 8 to 12 carbon atoms, a cyclohexylene group or a phenylene group, and the phenylene and cyclohexylene groups can be substituted by methyl or chlorine and/or can be bonded to phenylene or cyclohexylene groups via a simple valency bond or via a bridge member, is warmed.

Claim 42

A process according to claim 17, characterised in that a mixture of which the prepolymer is prepared from a mixture containing, as the diimide or triimide, a compound of the formula I, in which A denotes an aromatic radical with 6-20 carbon atoms, is warmed.

Claim 43

A process according to claim 17, characterised in that a mixture which contains a prepolymer, for the preparation of which the polyamine used is a polyamine of the formula VI ##SPC14## in which R 4 and R 5 each denotes hydrogen, alkyl cycloalkyl, aryl or aralkyl or together denote an alkylene group, is warmed.

Claim 44

A process according to claim 17, characterised in that a mixture which contains a prepolymer, for the preparation of which 4,4'-diaminodiphenylmethane, tri-(4-aminophenyl)-phosphate or tri-(4-aminophenyl)-thiophosphate is used as the polyamine of the formula V, is warmed.