Block polymers from isocyanurate-based polyesters and conventional polyester segments

Claim 2

A substantially linear segmented copolymer having the formula (MX) n wherein n is an integer greater than 0 and M is a bivalent organic radical segment of the formula ##STR9## wherein R is hydrogen, C 1 to C 4 alkyl, aryl or C 1 to C 4 alkyl substituted aryl; A is C 1 to C 4 alkylene; A' is C 1 to C 4 alkylene the same or different from A, phenylene or alkyl substituted phenylene; and y is an integer greater than 0, said segment M of molecular weight from 1,000 to 20,000; and X is a bivalent organic radical segment of the formula ##STR10## wherein G is a long chain radical segment of recurring linkages selected from the group consisting of ester and ether; and z is in integer greater than 0 the same or different than said segment X of molecular weight 1,000 to 20,000; wherein the difference between the glass transition temperature of said segment M and said segment X is from about 50° to about 200° C.

Claim 3

The copolymer of claim 1 wherein organic bivalent radical segments M and N are coupled with a coupling reagent selected from the group consisting of aliphatic diisocyanate, aliphatic diacid chloride, and aliphatic dicarboxylic acid.

Claim 4

The copolymer of claim 1 wherein M is ##STR11## wherein R is hydrogen, C 1 to C 4 alkyl, aryl, or C 1 to C 4 alkyl substituted aryl; and y is greater than 0 and X is selected from the group consisting of linear polyalkyllactone and polyalkylene phthalate.

Claim 5

The copolymer of claim 3 wherein R is phenyl and X is polycaprolacetone.

Claim 6

The copolymer of claim 1 wherein the ratio of M:X is from 2:8 to 8:2.

Claim 7

The copolymer of claim 3 wherein R is phenyl and X is polyethylene isophthalate.

Claim 8

A process for preparing a substantially linear segmented copolymer which comprises the steps of: a. reacting a linear isocyanurate-containing polymer segment of the formula ##STR12## wherein R is hydrogen, C 1 to C 4 alkyl, aryl or C 1 to C 4 alkyl-substituted aryl; A is C 1 to C 4 alkylene; A' is C 1 to C 4 alkylene, the same or different from A, phenylene, or alkyl-substituted phenylene, and y is an integer greater than 0, said linear isocyanurate-containing polymer having a molecular weight of 1,000 to 20,000 and terminally reactive groups selected from the group hydroxy, thiol and amine; b. an organic polymer of the formula --O--G] z wherein G is a long chain radical segment of recurring linkages selected from the group ester and ether and z is an integer greater than 0, the same or different than y, said organic radical segment having a molecular weight of 1,000 to 20,000 and at least two reactive hydrogens; and c. a coupling agent wherein the difference between the glass transition temperature of said linear isocyanurate-containing polymer segment and said organic polymer segment is from about 50° to about 200°.

Claim 9

A process for preparing a substantially linear segmented copolymer which comprises the steps of: a. reacting a linear isocyanurate-containing polymer segment of the formula ##STR12## wherein R is hydrogen, C 1 to C 4 alkyl, aryl or C 1 to C 4 alkyl-substituted aryl; A is C 1 to C 4 alkylene; A' is C 1 to C 4 alkylene, the same or different from A, phenylene, or alkyl-substituted phenylene, and y is an integer greater than 0, said linear isocyanurate-containing polymer having a molecular weight of 1,000 to 20,000 and terminally reactive groups selected from the group hydroxy, thiol and amine; b. an organic polymer of the formula --O--G] z wherein G is a long chain radical segment of recurring linkages selected from the group ester and ether and z is an integer greater than 0, the same or different than y, said organic radical segment having a molecular weight of 1,000 to 20,000 and at least two reactive hydrogens; and c. a coupling agent wherein the difference between the glass transition temperature of said linear isocyanurate-containing polymer segment and said organic polymer segment is from about 50° to about 200°.

Claim 10

The process of claim 7 wherein said substantially linear segmented copolymer comprises the ratio of said linear isocyanurate-containing polymer:said linear glycol of from 2:8 to 8:2.