Crosslinked, linear, acylated polyalkylenepolyamines and process therefor

Claim 2

A water-insoluble, crosslinked, linear, acylated polyalkylenepolyamine consisting essentially of n randomly joined units of the formulae ##STR5## wherein R is hydrogen or C 1 -C 3 alkyl; R' is hydrogen, phenyl, C 1 -C 18 alkyl or an inertly-substituted phenyl or C 1 -C 18 alkyl; Y is arylene, C 1 -C 10 alkylene, C 5 -C 7 cycloalkylene or an inertly-substituted derivative thereof; x is 1 or 2; n is an integer of at least 4; i is an integer of at least 1; and j, h, k and m are independently integers of at least 0 with the provisos that (a) h+k+m is between about 2 percent and about 80 percent of n, (b) (i/2)+(j/2) is between about 20 percent and about 98 percent of n, and (c) h+(i/2)+(j/2)+k+m = n.

Claim 3

The polyalkylenepolyamine of claim 1 wherein n is an integer of at least 4 to about 10,000; i is an integer of at least 1 to about 16,000; j is an integer of at least 0 to about 16,000; and h, k and m are independently integers of at least 0 to about 8,000.

Claim 4

The polyalkylenepolyamine of claim 2 wherein n is at least about 100.

Claim 5

The polyalkylenepolyamine of claim 3 with the further proviso that i/2 is about 50 percent of (i/2)+(j/2).

Claim 6

The polyalkylenepolyamine of claim 3 wherein i/2 is about 90 percent of (i/2)+(j/2).

Claim 7

The polyalkylenepolyamine of claim 3 wherein i/2 is about 100 percent (i/2)+(j/2).

Claim 8

The polyalkylenepolyamine of claim 6 wherein x is 1.

Claim 9

The polyalkylenepolyamine of claim 7 wherein R is hydrogen.

Claim 10

The polyalkylenepolyamine of claim 8 wherein R' is C 2 -C 4 alkyl.

Claim 11

The polyalkylenepolyamine of claim 9 wherein h is between about 2 percent and about 40 percent of n.

Claim 12

The polyalkylenepolyamine of claim 10 wherein Y is arylene or inertly-substituted arylene.

Claim 13

The polyalkylenepolyamine of claim 11 wherein Y is tolylene.

Claim 14

A process for preparing the polyalkylenepolyamines of claim 1, the process comprising contacting (A) a linear, acylated polyalkylenepolyamine consisting essentially of n randomly joined units of the formulae ##STR6## wherein R is hydrogen or C 1 -C 3 alkyl; R' is hydrogen, phenyl, C 1 -C 18 alkyl or an inertly-substituted phenyl or C 1 -C 18 alkyl; x is 1 or 2; n is an integer of at least 4; and h is an integer of at least 1; with (B) a diisocyanate of the formula ##STR7## wherein Y is arylene, C 1 -C 10 alkylene, C 5 -C 7 cycloalkylene or an inertly-substituted derivative thereof at a diisocyanate:polyalkylenepolyamine equivalence ratio between about 0.02:1 and about 0.8:1, inclusive, and at a temperature between about 30° and about 200° C.

Claim 15

The process of claim 13 with the proviso that h is at least about 50 percent of n.

Claim 16

The process of claim 13 wherein h is at least about 90 percent of n.

Claim 17

The process of claim 13 wherein h is or is about 100 percent of n.

Claim 18

The process of claim 16 wherein x is 1.

Claim 19

The process of claim 17 wherein R is hydrogen.

Claim 20

The process of claim 18 wherein R' is C 2 -C 4 alkyl.

Claim 21

The process of claim 19 wherein Y is arylene or inertly-substituted arylene.

Claim 22

The process of claim 19 wherein Y is tolylene.

Claim 23

The process of claim 21 wherein the equivalence ratio is between about 0.2:1 and about 0.4:1, inclusive.

Claim 24

The process of claim 22 wherein the temperature is between about 110° C and about 170° C, inclusive.