Hydrophilic polycarbodiimide polymer, pulp-like material consisting of said hydrophilic polycarbodiimide polymer, and process for producing said polymer or said material

Claim 2

A hydrophilic polycarbodiimide polymer obtained by a method comprising reacting an organic diisocyanate and an alkyliminodiol to introduce a tertiary amino group into the organic diisocyanate, converting the introduced tertiary amino group to a quaternary ammonium salt with a quaternizing agent, and then effecting carbodiimidization in the presence of a carbodiimidization catalyst.

Claim 3

A hydrophilic polycarbodiimide polymer obtained by a method comprising at least partially carbodiimidizing an organic diisocyanate in the presence of a carbodiimidization catalyst, reacting the resulting polycarbodiimide with an alkyliminodiol to introduce a tertiary amino group into the polycarbodiimide, and then converting the introduced tertiary amino group to a quaternary ammonium salt with a quaternizing agent.

Claim 4

A hydrophilic polycarbodiimide polymer obtained by a method comprising at least partially carbodiimidizing an organic diisocyanate in the presence of a carbodiimidization catalyst, reacting the resulting polycarbodiimide with an alkyliminodiol to introduce a tertiary amino group into the polycarbodiimide, and then converting the introduced tertiary amino group to a quaternary ammonium salt with a quaternizing agent.

Claim 5

A hydrophilic polycarbodiimide polymer according to claim 1 or 2, wherein the organic diisocyanate is represented by the formula ##STR5## (R 1 represents a lower alkyl group of a lower alkoxy group) or by the formula ##STR6## (R 2 and R 3 each represent a hydrogen atom, a lower alkyl group or a lower alkoxy group, and X represents an oxygen atom or a methylene group).

Claim 6

A hydrophilic polycarbodiimide polymer according to claim 1 or 2, wherein the alkyliminodiol is represented by the formula R--N--(R'--OH).sub.2 (R represents a lower alkyl group and R' represents an alkylene group, a polyalkylene group or an oxyalkylene group of 1-10 carbon atoms.

Claim 7

A hydrophilic polycarbodiimide polymer according to claim 1 or 2, which has a main structure represented by the formula ##STR7## (R 1 represents a lower alkyl group or a lower alkoxy group, R represents a lower alkyl group, and R' represents an alkylene group, a polyalkylene group or an oxyalkylene group of 1-10 carbon atoms) or by the formula ##STR8## (R 2 and R 3 each represent a hydrogen atom, a lower alkyl group or a lower alkoxy group, and X represents an oxygen atom or a methylene group, R represents a lower alkyl group, and R' represents an alkylene group, a polyalkylene group or an oxyalkylene group of 1-10 carbon atoms).

Claim 8

A pulp-like material consisting of a hydrophilic polycarbodiimide polymer obtained by a method comprising reacting an organic diisocyanate and an alkyliminodiol to introduce a tertiary amino group into the organic diisocyanate, converting the introduced tertiary amino group to a quaternary ammonium salt with a quaternizing agent, effecting carbodiimidization in the presence of a carbodiimidization catalyst to obtain a hydrophilic polycarbodiimide polymer into a poor solvent for the polymer while applying a shearing force.

Claim 9

A pulp-like material consisting of a hydrophilic polycarbodiimide polymer obtained by a method comprising reacting an organic diisocyanate and an alkyliminodiol to introduce a tertiary amino group into the organic diisocyanate, converting the introduced tertiary amino group to a quaternary ammonium salt with a quaternizing agent, effecting carbodiimidization in the presence of a carbodiimidization catalyst to obtain a hydrophilic polycarbodiimide polymer into a poor solvent for the polymer while applying a shearing force.

Claim 10

A pulp-like material consisting of a hydrophilic polycarbodiimide polymer obtained by a method comprising at least partially carbodiimidizing an organic diisocyanate in the presence of a carbodiimidization catalyst, reacting the resulting polycarbodiimide with an alkyliminodiol to introduce a tertiary amino group into the polycarbodiimide, converting the introduced tertiary amino group to a quaternary ammonium salt with a quaternizing agent to obtain a hydrophilic polycarbodiimide polymer, and transferring the hydrophilic polycarbodiimide polymer into a poor solvent for the polymer while applying a shear force.

Claim 11

A pulp-like material consisting of a hydrophilic polycarbodiimide polymer obtained by a method comprising at least partially carbodiimidizing an organic diisocyanate in the presence of a carbodiimidization catalyst, reacting the resulting polycarbodiimide with an alkyliminodiol to introduce a tertiary amino group into the polycarbodiimide, converting the introduced tertiary amino group to a quaternary ammonium salt with a quaternizing agent to obtain a hydrophilic polycarbodiimide polymer, and transferring the hydrophilic polycarbodiimide polymer into a poor solvent for the polymer while applying a shear force.

Claim 12

A pulp-like material consisting of a hydrophilic polycarbodiimide polymer according to claim 6 or 7, wherein the organic diisocyanate is represented by the formula ##STR9## (R 1 represents a lower alkyl group or a lower alkoxy group) or by the formula ##STR10## (R 2 and R 3 each represent a hydrogen atom, a lower alkyl group or a lower alkoxy group, and X represents an oxygen atom or a methylene group).

Claim 13

A pulp-like material consisting of a hydrophilic polycarbodiimide polymer according to claim 6 or 7, wherein the alkyliminodiol is represented by the formula R--N--(R'--OH).sub.2 (R represents a lower alkyl group and R' represents an alkylene group, a polyalkylene group or an oxyalkylene group of 1-10 carbon atoms).

Claim 14

A pulp-like material consisting of a hydrophilic polycarbodiimide polymer according to claim 6 or 7, wherein the hydrophilic polycarbodiimide polymer has a main structure represented by the formula ##STR11## (R 1 represents a lower alkyl group or a lower alkoxy group, R represents a lower alkyl group, and R' represents an alkylene group, polyalkylene group or an oxyalkylene group of 1-10 carbon atoms) or by the formula ##STR12## (R 2 and R 3 each represent a hydrogen atom, a lower alkyl group or a lower alkoxy group, and X represents an oxygen atom or a methylene group, R represents a lower alkyl group, and R' represents an alkylene group, a polyalkylene group or an oxyalkylene group of 1-10 carbon atoms).

Claim 15

A pulp-like material consisting of a polycarbodiimide polymer according to claim 6 or 7, wherein the poor solvent is water.

Claim 16

A process for producing a hydrophilic polycarbodiimide polymer, consisting of reacting an organic diisocyanate and an alkyliminodiol to introduce a tertiary amino group into the organic diisocyanate, converting the introduced tertiary amino group to a quaternary ammonium salt with a quaternizing agent, and then effecting carbodiimidization in the presence of a carbodiimidization catalyst.

Claim 17

A process for producing a hydrophilic polycarbodiimide polymer, consisting of reacting an organic diisocyanate and an alkyliminodiol to introduce a tertiary amino group into the organic diisocyanate, converting the introduced tertiary amino group to a quaternary ammonium salt with a quaternizing agent, and then effecting carbodiimidization in the presence of a carbodiimidization catalyst.

Claim 18

A process for producing a hydrophilic polycarbodiimide polymer, comprising at least partially carbodiimidizing an organic diisocyanate in the presence of a carbodiimidization catalyst, reacting the resulting polycarbodiimide with an alkyliminodiol to introduce a tertiary amino group into the polycarbodiimide, and then converting the introduced tertiary amino group to a quaternary ammonium salt with a quaternizing agent.

Claim 19

A process for producing a hydrophilic polycarbodiimide polymer, comprising at least partially carbodiimidizing an organic diisocyanate in the presence of a carbodiimidization catalyst, reacting the resulting polycarbodiimide with an alkyliminodiol to introduce a tertiary amino group into the polycarbodiimide, and then converting the introduced tertiary amino group to a quaternary ammonium salt with a quaternizing agent.

Claim 20

A process for producing a hydrophilic polycarbodiimide polymer according to claim 12 or 13, wherein the organic diisocyanate is represented by the formula ##STR13## (R 1 represents a lower alkyl group or a lower alkoxy group) or by the formula ##STR14## (R 2 and R 3 each represent a hydrogen atom, a lower alkyl group or a lower alkoxy group, and X represents an oxygen atom or a methylene group).

Claim 21

A process for producing a hydrophilic polycarbodiimide polymer according to claim 12 or 13, wherein the concentration of the organic diisocyanate is 5-40% by weight.

Claim 22

A process for producing a hydrophilic polycarbodiimide polymer according to claim 12 or 13, wherein the alkyliminodiol is represented by the formula R--N--(R'--OH).sub.2 (R represents a lower alkyl group and R' represents an alkylene group, a polyalkylene group or an oxyalkylene group of 1-10 carbon atoms).

Claim 23

A process for producing a hydrophilic polycarbodiimide polymer according to claim 12 or 13, wherein the alkyliminodiol is used in an amount of 1/10 to 1/50 equivalent per the amount of the organic diisocyanate.

Claim 24

A process for producing a hydrophilic polycarbodiimide polymer according to claim 12 or 13, wherein in the carbodiimidization, an alicyclic ether is used as the solvent.

Claim 25

A process for producing a hydrophilic polycarbodiimide polymer according to claim 18, wherein the alicyclic ether is tetrahydrofuran, dioxane, tetrahydropyran or their mixture.

Claim 26

A process for producing a pulp-like material consisting of a hydrophilic polycarbodiimide polymer, comprising reacting an organic diisocyanate and an alkyliminodiol to introduce a tertiary amino group into the organic diisocyanate, converting the introduced tertiary amino group to a quaternary ammonium salt with a quaternizing agent, effecting carbodiimidization in the presence of a carbodiimidization catalyst to obtain a hydrophilic polycarbodiimide polymer, and transferring the hydrophilic polycarbodiimide polymer into a poor solvent for the polymer while applying a shearing force.

Claim 27

A process for producing a pulp-like material consisting of a hydrophilic polycarbodiimide polymer, comprising reacting an organic diisocyanate and an alkyliminodiol to introduce a tertiary amino group into the organic diisocyanate, converting the introduced tertiary amino group to a quaternary ammonium salt with a quaternizing agent, effecting carbodiimidization in the presence of a carbodiimidization catalyst to obtain a hydrophilic polycarbodiimide polymer, and transferring the hydrophilic polycarbodiimide polymer into a poor solvent for the polymer while applying a shearing force.

Claim 28

A process for producing a pulp-like material consisting of a hydrophilic polycarbodiimide polymer, comprising at least partially carbodiimidizing an organic diisocyanate in the presence of a carbodiimidization catalyst, reacting the resulting polycarbodiimide with an alkyliminodiol to introduce a tertiary amino group into the polycarbodiimide, converting the introduced tertiary amino group to a quaternary ammonium salt with a quaternizing agent to obtain a hydrophilic polycarbodiimide polymer, and transferring the hydrophilic polycarbodiimide polymer into a poor solvent for the polymer while applying a shearing force.

Claim 29

A process for producing a pulp-like material consisting of a hydrophilic polycarbodiimide polymer, comprising at least partially carbodiimidizing an organic diisocyanate in the presence of a carbodiimidization catalyst, reacting the resulting polycarbodiimide with an alkyliminodiol to introduce a tertiary amino group into the polycarbodiimide, converting the introduced tertiary amino group to a quaternary ammonium salt with a quaternizing agent to obtain a hydrophilic polycarbodiimide polymer, and transferring the hydrophilic polycarbodiimide polymer into a poor solvent for the polymer while applying a shearing force.

Claim 30

A process for producing a pulp-like material consisting of a hydrophilic polycarbodiimide polymer according to claim 20 or 21, wherein the organic diisocyanate is represented by the formula ##STR15## (R 1 represents a lower alkyl group or a lower alkoxy group) or by the formula ##STR16## (R 2 and R 3 each represent a hydrogen atom, a lower alkyl group or a lower alkoxy group, and X represents an oxygen atom or a methylene group).

Claim 31

A process for producing a pulp like material consisting of a hydrophilic polycarbodiimide polymer according to claim 20 or 21, wherein the concentration of the organic diisocyanate is 5-40% by weight.

Claim 32

A process for producing a pulp-like material consisting of a hydrophilic polycarbodiimide polymer according to claim 20 or 21, wherein the alkyliminodiol is represented by the formula R--N--(R'--OH).sub.2 (R represents a lower alkyl group and R' represents an alkylene group, a polyalkylene group or an oxyalkylene group of 1-10 carbon atoms).

Claim 33

A process for producing a pulp-like material consisting of a hydrophilic polycarbodiimide polymer according to claim 20 or 21, wherein the alkyliminodiol is used in an amount of 1/10 to 1/50 equivalent per the amount of the organic diisocyanate.

Claim 34

A process for producing a pulp-like material consisting of a hydrophilic polycarbodiimide polymer according to claim 20 or 21, wherein in the carbodiimidization, an alicyclic ether is used as the solvent.

Claim 35

A process for producing a pulp-like material consisting of a hydrophilic polycarbodiimide polymer according to claim 26, wherein the alicyclic ether is tetrahydrofuran, dioxane, tetrahydropyran or their mixture.

Claim 36

A process for producing a pulp-like material consisting of a hydrophilic polycarbodiimide polymer according to claim 20 or 21, wherein the poor solvent is water.