Elasticized addition product based on polyalkylene ether-polyols and polyisocyanates, preparation and use thereof

Claim 2

An elasticized addition product comprising (a) a polyalkylene ether-polyol and (b) a polyisocyanate wherein (a) has a molecular weight of 500 to 10,000 and 2 to 6 C atoms in the alkylene radical and the ratio of the NCO groups in the component (b) to the OH groups in the component (a) is 1,5:1 to 2,5:1, the addition product thereof is reacted further with a hydroxyl compound selected from the group consisting of (c) an imidazolidine of the formula I ##STR2## wherein R is hydrogen or alkyl having 1 to 4 C atoms, R 1 is (c1) hydrogen, (c2) hydroxyalkyl and alkyl having 1 to 12 C atoms in each case, (c3) --CH 2 --R 5 , (c4) --CH 2 --CH 2 --COOR 5 , ##STR3## (c6) --CH 2 --CH 2 --CN wherein R 5 represents in each hydroxyalkyl or alkyl having up to 8 C atoms, R 2 denotes (c7) alkyl or alkylene having in each case 1 to 12 C atoms or denotes one of the radicals (c3) to (c6), R 3 and R 4 each denote hydrogen or alkyl having 1 to 5 C atoms or R 3 and R 4 together denote alkylene having 4 to 6 C atoms, and (d) a hexahydropyrimidine derivative of the general formula ##STR4## wherein R 1 to R 5 have the meaning as mentioned under (c), at least one of each of the substituents R 1 to R 5 in the formulae (I) and (II) carrying a hydroxyl group; the ratio of NCO groups to the OH groups of component (c) and (d) or a mixture thereof is approximately 1:1.

Claim 3

Addition product as claimed in claim 1 which is partly or completely hydrolyzed.

Claim 4

A process for the preparation of an elasticized addition product comprising the steps: reacting (a) a polyalkylene ether-polyol having a molecular weight of 500 to 10,000 and 2 to 6 C atoms in the alkylene radical with (b) a polyisocyanate at a temperature of 50° to 100° C. in the presence of a catalyst, the ratio of the NCO groups in the component (b) to the OH groups in the component (a) being 1.5:1 to 2.5:1, followed by further reacting the product of (a) with (b) at ambient or at a temperature up to 150° C. with a hydroxyl compound selected from the group consisting of: (c) an imidazoline of the formula I ##STR5## wherein R is hydrogen or alkyl having 1 to 4 C atoms, R 1 is (c1) hydrogen, (c2) hydroxyalkyl and alkyl having 1 to 12 C atoms in each case, (c3) --CH 2 --R 5 , (c4) --CH 2 --CH 2 --COOR 5 , ##STR6## (c6) --CH 2 --CH 2 --CN wherein R 5 represents in each case hydroxyalkyl or alkyl having up to 8 C atoms, R 2 denotes (c7) alkyl or alkylene having in each case 1 to 12 C atoms or denotes one of the radicals (c3) to (c6), R 3 and R 4 each denote hydrogen or alkyl having 1 to 5 C atoms or R 3 and R 4 together denote alkylene having 4 to 6 C atoms, and (d) a hexahydropyrimidine derivative of the general formula ##STR7## wherein R 1 to R 5 have the meaning as mentioned under (c), at least one of each of the substituents R 1 to R 5 in the formulae (I) and (II) carrying a hydroxyl group and the ratio of NCO groups to the OH groups of component (c) and (d) or a mixture thereof is approximately 1:1, and isolating the product so produced.

Claim 5

A process for the preparation of an elasticized addition product comprising the steps: reacting (a) a polyalkylene ether-polyol having a molecular weight of 500 to 10,000 and 2 to 6 C atoms in the alkylene radical with (b) a polyisocyanate at a temperature of 50° to 100° C. in the presence of a catalyst, the ratio of the NCO groups in the component (b) to the OH groups in the component (a) being 1.5:1 to 2.5:1, followed by further reacting the product of (a) with (b) at ambient or at a temperature up to 150° C. with a hydroxyl compound selected from the group consisting of: (c) an imidazoline of the formula I ##STR5## wherein R is hydrogen or alkyl having 1 to 4 C atoms, R 1 is (c1) hydrogen, (c2) hydroxyalkyl and alkyl having 1 to 12 C atoms in each case, (c3) --CH 2 --R 5 , (c4) --CH 2 --CH 2 --COOR 5 , ##STR6## (c6) --CH 2 --CH 2 --CN wherein R 5 represents in each case hydroxyalkyl or alkyl having up to 8 C atoms, R 2 denotes (c7) alkyl or alkylene having in each case 1 to 12 C atoms or denotes one of the radicals (c3) to (c6), R 3 and R 4 each denote hydrogen or alkyl having 1 to 5 C atoms or R 3 and R 4 together denote alkylene having 4 to 6 C atoms, and (d) a hexahydropyrimidine derivative of the general formula ##STR7## wherein R 1 to R 5 have the meaning as mentioned under (c), at least one of each of the substituents R 1 to R 5 in the formulae (I) and (II) carrying a hydroxyl group and the ratio of NCO groups to the OH groups of component (c) and (d) or a mixture thereof is approximately 1:1, and isolating the product so produced.

Claim 6

A process as claimed in claim 3 wherein the elasticized addition product is subsequently at least partially hydrolyzed.

Claim 7

A composition comprising a mixture of (A) at least one elasticized addition product as claimed in claim 1 as a curing agent and (B) an epoxide compound having more than one epoxide group per molecule or combinations thereof with monoepoxide compounds, alone or together with (C) further customary additives.

Claim 8

Composition as claimed in claim 5 wherein component (C) is at least in part, a customary amine curing agent, a diluent or a mixture thereof.

Claim 9

Composition as claimed in claim 5, wherein the epoxide compound (B) has an epoxide equivalent of 150 to 1,000 and a molecular weight between 300 and 2,000.

Claim 10

Composition as claimed in claim 5 for the preparation of molded articles or sheet-like structures by curing.

Claim 11

Composition as claimed in claim 8, wherein the curing is effected in the presence of water.