Claims
- 1. A polyamide resin having improved solubility in aqueous solutions formed from a mixture comprising X equivalent percent of an acid component substantially free from a polymeric fat acid and comprising an aromatic dicarboxylic acid alone or in admixture with up to about 50 equivalent percent of a copolymerizing aliphatic dicarboxylic acid containing from 2-25 carbon atoms and Z equivalent percent of a diamine component wherein the ratio of Z to X is less than 1, and further provided that when said diamine is an alkylene diamine or a polyether diamine having an average molecular weight above 250 there is also present a copolymerizing acid or amine in said acid or amine component and provided said polyether diamine comprises in excess of 25 equivalent percent of said copolymerizing amine in said amine component.
- 2. A polyamide is defined in claim 1 wherein said aromatic acid is isophthalic acid, said aliphatic dicarboxylic acid is 2-n-hexyl-5-(7-carboxyl-n-heptyl) cyclohex-3-ene carboxylic acid, and said aliphatic diamine is ethylene diamine.
- 3. A polyamide as defined in claim 1 wherein said aromatic acid is isophthalic acid, said aliphatic dicarboxylic acid is 2-n-hexyl-5-(7-carboxyl-n-heptyl) cyclohex-3-ene carboxylic acid, and said aliphatic diamine is hexamethylene diamine.
- 4. A polyamide as defined in claim 1 wherein said aromatic acid is isophthalic acid, said aliphatic dicarboxylic acid is 2-n-hexyl-5-(7-carboxyl-n-heptyl) cyclohex-3-ene carboxylic acid, and said aliphatic diamine is a polyether diamine having a molecular weight not more than about 400.
- 5. An ink varnish composition comprising a polyamide resin of claim 1 and an aqueous solvent containing ammonia and an organic amine.
- 6. A polyamide resin formed from a mixture comprising X equivalent percent of an acid component substantially free from a polymeric fat acid comprised of an aromatic dicarboxylic acid and Z equivalent percent of an amine component wherein the ratio of Z to X is less than 1 to provide an acid value greater than 35 and wherein said amine component is comprised of a diamine.
- 7. A polyamide as defined in claim 6 wherein said ratio of Z to X is from about 0.50 to about 0.85.
- 8. A polyamide as defined in claim 6 wherein said acid component is comprised of 50-100 equivalent percent of said aromatic dicarboxylic acid and 0-50 equivalent percent of an aliphatic dicarboxylic acid having from 2-25 carbon atoms.
- 9. A polyamide as defined in claim 8 wherein said aliphatic dicarboxylic acid has from 16-21 carbon atoms.
- 10. A polyamide as defined in claim 9 wherein said aliphatic dicarboxylic acid is heptadecanedicarboxylic acid.
- 11. A polyamide as defined in claim 9 wherein said aliphatic dicarboxylic acid is 2-n-hexyl-5-(7-carboxyl-n-heptyl) cyclohex-3-ene carboxylic acid.
- 12. A polyamide as defined in claim 8 wherein said aromatic dicarboxylic acid is isophthalic acid.
- 13. A polyamide as defined in claim 6 wherein said diamine is an aliphatic diamine having from 2-25 carbon atoms.
- 14. A polyamide as defined in claim 13 wherein said diamine is an alkylene diamine in which the alkylene group contains from 2-8 carbon atoms.
- 15. A polyamide as defined in claim 13 wherein said diamine is ethylene diamine.
- 16. A polyamide as defined in claim 13 wherein said diamine is hexamethylene diamine.
- 17. A polyamide as defined in claim 13 wherein said diamine is a polyether diamine having an average molecular weight not more than about 400.
- 18. A polyamide as defined in claim 17 wherein said polyether diamine has a molecular weight below 250.
Parent Case Info
This application is a division of application Ser. No. 811,209, filed Dec. 20, 1985, now U.S. Pat. No. 4,722,963.
US Referenced Citations (1)
Number |
Name |
Date |
Kind |
4722963 |
Whyzmuzis |
Feb 1988 |
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Divisions (1)
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Number |
Date |
Country |
Parent |
811209 |
Dec 1985 |
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