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US 4,791,169 AGranted
Carboxylated polyamide from isophthalic acid and polyalkylene polyamine
AssigneeSchering Corporation
InventorsManfred Drawert, Horst Krase
Life of this patent
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Abstract
Polyamides containing carboxyl groups which, after neutralization with a base, are dilutable with water and which are the products of condensing (1) an amine mixture comprising trifunctional and difunctional amines with (2) an excess of an acid mixture consisting of isophthalic acid and a dimerzied fatty acid and/or a C.sub.6 -C.sub.12 aliphatic dicarboxylic acid.
Claims23
A carboxylated polyamide condensation product formed between
- (A) an acid component comprising
- (2) isophthalic acid and
- (2) at least one dimerized fatty acid, wherein the ratio of acid equivalents of (A)(1) to (A)(2) is from 0.7:0.3 to 0.8:0.2, and
- (B) an amine component comprising
- (1) at least one member selected from the group consisting of diethyelentriamine and dipropylenetriamine, and
- (2) (a) ethylenediamine and
- (b) a cycloaliphatic diamine, wherein the ratio of amino equivalents (B)(I) to (B)(2) ranges from 0.4:0.6 to 0.7:0.3 and the amount of (B)(2)(b) is from zero to 25 equivalent percent of the total amine component (B) and the ratio if (A) to (B) is from 1:0.7 to 1:0.85, based on the number of acid and amine equivalents, respectively.
4 more elements
A carboxylated polyamide condensation product formed between
- (A) an acid component comprising
- (1) isophthalic acid and
- (2) at least one aliphatic dicarboxylic acid having from 6 to 12 carbon atoms, wherein the ratio of acid equivalents of (A)(1) to (A)(2) is from 0.7:0.3 to 0.8:0.2 and said aliphatic dicarboxylic acids are not more than about 20 equivalent percent of the total acid component (A), and
- (B) an amine component comprising
- (1) at least one member selected from the group consisting of diethylenetriamine and dipropylenetriamine, and
- (2)
- (a) ethylenediamine and
- (b) a cycloaliphatic diamine, wherein the ratio of amine equivalents (B)(1) to (B)(2) ranges from 0.4:0.6 to 0.7:0.3 and the amount of (B)(2)(b) is from zero to 25 equivalent percent of the total amine component (B), and the ratio of (A) to (B) is from 1:0.7 to 1:0.85, based on the number of acid and amine equivalents, respectively.
5 more elements
A carboxylated polyamide condensation product formed between
- (A) an acid component conprising
- (1) isophthalic acid and
- (2) a mixture of at least one dimerized fatty acid and at least one aliphatic dicarboxylic acid having from 6 to 12 carbon atoms, wherein the ratio of acid equivalents of (A)(1) to (A)(2) is from 0.7:0.3 to 0.8:0.2 and said aliphatic dicarboxylic acids are not more than about 20 equivalent percent of the total acid component (A), and
- (B) an amine component comprising
- (1) at least one member selected from the group consisting of diethylenetriamine and dipropylenetriamine, and
- (2)
- (a) ethylenediamine and
- (b) a cycloaliphatic diamine, wherein the ratio of amine equivalents (B)(1) to (B)(2) ranges from 0.4:0.6 to 0.7:0.3 and the amount of (B)(2)(b) is from zero to 25 equivalent percent of the total amine components (B) and the ratio of (a) to (b) is from 1:0.7 to 1:0.85, based on the number of acid and amine equivalents, respectively.
5 more elements
Dependencies are inferred from the claim text.