Claims
- 1. A polyamide which is the reaction product of:
- (a) at least one diamine; and
- (b) at least one dicarboxylic acid, said diamine and said dicarboxylic acid being in a mole ratio of from 48:52 to 52:48, said diamine comprising:
- (i) toluenediamine at a level of from 10 to 50 mole percent based on the total moles of diamine and dicarboxylic acid; and
- (ii) an aliphatic diamine at a level of from 0 to 40 mole percent based on the total moles of diamine and dicarboxylic acid, said dicarboxylic acid comprising:
- (i) isophthalic acid at a level of from 5 to 50 mole percent based on the total moles of diamine and dicarboxylic acid,
- (ii) terephthalic acid present at a level of from 0 to 27.5 mole percent based on the total moles of diamine and dicarboxylic acid,
- (iii) an aliphatic dicarboxylic acid at a level of from 0 to 45 mole percent based on the total moles of diamine and dicarboxylic acid, said aliphatic diamine and aliphatic dicarboxylic acid being at a combined level of from 5 to 45 mole percent based on the total moles of diamine and dicarboxylic acid.
- 2. The polyamide of claim 1 wherein said toluenediamine is at a level of 20 to 40 mole percent based on the total moles of diamine and dicarboxylic acid, said aliphatic dicarboxylic acid being at a level of from 10 to 30 mole percent based on the total moles of diamine and dicarboxylic acid, said isophthalic acid being at a level of 25 to 45 mole percent based on the total moles of diamine and dicarboxylic acid, said terephthalic acid is at a level of 5 to 20 mole percent based on the total moles of diamine and dicarboxylic acid, said aliphatic dicarboxylic acid being present at a level of from 0 to 20 mole percent based on the total moles of diamine and dicarboxylic acid, and said aliphatic diamine and aliphatic dicarboxylic acid are at a combined level of from 10 to 35 mole percent based on the total moles of diamine and dicarboxylic acid.
- 3. The polyamide of claim 2 wherein said toluenediamine is at a level of about 35 mole percent based on the total moles of diamine and dicarboxylic acid, said aliphatic diamine is at a level of about 15 mole percent based on the total moles of aliphatic diamine and dicarboxylic, said isophthalic acid being at a level of about 37.5 mole percent based on the total moles of diamine and dicarboxylic acid, and said terephthalic acid being at a level of about 12.5 mole percent based on the total moles of diamine and dicarboxylic acid.
- 4. The polyamide of claim 1 wherein said diamine and said dicarboxylic acid are in a mole ratio of about 50:50.
- 5. The polyamide of claim 1 wherein said toluenediamine is a mixture of 2,6 toluenediamine and 2,4 toluenediamine, said 2,6 toluenediamine being at a level of 10 to 30 mole percent based on the total moles of toluenediamine, and said 2,4 toluenediamine being at a level of from 70 to 90 mole percent based on the total moles of toluenediamine.
- 6. The polyamide of claim 1 wherein said aliphatic diamine contains from 2 to 12 carbon atoms, and said aliphatic dicarboxylic acid contains from 2 to 14 carbon atoms.
- 7. A polyamide consisting essentially of units selected from the group consisting of: ##STR15## wherein R.sup.2 is selected from the group consisting of: ##STR16## wherein R.sup.3 is selected from the group consisting of a aliphatic hydrocarbon divalent radicals having from 1 to 12 carbon atoms therein; wherein R.sup.4 is selected from the group consisting of straight and branched aliphatic divalent radicals having from 2 to 12 carbon atoms therein; and wherein R.sup.5 is selected from the group consisting of: ##STR17## in the total moles of R.sup.5 is between 5:27.5 and 100:0, wherein R.sup.2 is present in said polyamide at a level of from 10 to 50 mole percent based on the total moles of R.sup.2, R.sup.3, R.sup.4 and R.sup.5 in the polyamide, wherein R.sup.3 is present in the polyamide at a level of from 0 to 45 mole percent based on the total moles of R.sup.2, R.sup.3, R.sup.4 and R.sup.5 in the polyamide, wherein R.sup.4 is present in polyamide at a level of from 0 to 40 percent based on the total moles of R.sup.2, R.sup.3, R.sup.4 and R.sup.5 in the polyamide, and wherein the combined total moles of R.sup.3 and R.sup.4 are present at a level of from 5 to 45 mole percent based on the total moles of R.sup.2, R.sup.3, R.sup.4 and R.sup.5 in the polyamide.
- 8. The polyamide of claim 7 wherein R.sup.2 is present at a level of 20 to 40 mole percent based on the total moles of R.sup.2, R.sup.3, R.sup.4 and R.sup.5 present in the polyamide, wherein R.sup.3 is present at a level of from 0 to 20 mole percent based on the total moles of R.sup.2, R.sup.3, R.sup.4 and R.sup.5 present in the polyamide, wherein R.sup.4 is present at a level of from 10 to 30 mole percent based on the total moles of R.sup.2, R.sup.3, R.sup.4 and R.sup.5 present in the polyamide, and wherein R.sup.5 is present at a level of from 30 to 50 mole percent based on the total moles of R.sup.2, R.sup.3, R.sup.4 and R.sup.5 present in the polyamide.
- 9. A polyamide composition comprising from 5 to 50 percent by weight glass fibers and from 95 to 50 percent by weight of a polyamide, said polyamide being derived from:
- (A) a diamine; and
- (B) a dicarboxylic acid, said diamine and said dicarboxylic acid being in a mole ratio of from 48:52 and 52:48, said diamine comprising:
- (i) toluenediamine at a level of from 10 to 50 mole percent based on the total moles of diamine and dicarboxylic acid; and
- (ii) an aliphatic diamine at a level of from 0 to 40 mole percent based on the total moles of diamine and dicarboxylic acid, said dicarboxylic acid comprising:
- (i) isophthalic acid at a level of from 5 to 50 mole percent based on the total moles of diamine and dicarboxylic acid,
- (ii) terephthalic acid present at a level of from 0 to 27.5 mole percent based on the total moles of diamine and dicarboxylic acid,
- (iii) an aliphatic dicarboxylic acid at a level of from 0 to 45 mole percent based on the total moles of diamine and dicarboxylic acid, said aliphatic diamine and aliphatic dicarboxylic acid being at a combined level of from 5 to 45 mole percent based on the total moles of diamine and dicarboxylic acid.
- 10. A process for the preparation of a polymer derived from toluenediamine, said process comprising the steps of:
- (a) prereacting the toluenediamine with a diaryl ester selected from the group consisting of diphenyl isophthalate and mixtures of diphenyl isophthalate and diphenylterephthalate to end cap the toluenediamine with the diarylester, and
- (b) react the encapped toluenediamine with an aliphatic diamine.
- 11. A polyamide which is the reaction product of:
- (a) toluenediamine;
- (b) isophthalic acid; and
- (c) at least one aliphatic dicarboxylic acid.
- 12. The polyamide of claim 11 wherein said aliphatic dicarboxylic acid is adipic acid.
- 13. A polyamide which is the reaction product of:
- (a) toluenediamine;
- (b) at least one aliphatic diamine; and
- (c) isophthalic acid.
- 14. The polyamide of claim 13 wherein said aliphatic diamine is hexamethylene diamine.
- 15. A polyamide which is the reaction product of:
- (a) toluenediamine;
- (b) at least one aliphatic diamine;
- (c) isophthalic acid; and
- (d) terephthalic acid.
- 16. The polyamide of claim 15 wherein said aliphatic diamine is diamino-2-methylpentane.
- 17. A polyamide which is the reaction product of:
- (a) toluenediamine;
- (b) at least one aliphatic diamine;
- (c) isophathalic acid; and
- (d) at least one aliphatic dicarboxylic acid.
- 18. A polyamide which is the reaction product of:
- (a) toluenediamine;
- (b) at least one aliphatic diamine;
- (c) isophthalic acid;
- (d) terephthalic acid; and
- (e) at least one aliphatic dicarboxylic acid.
Parent Case Info
This is a continuation of application Ser. No. 07/301,194 filed 01/24/89, now abandoned.
US Referenced Citations (7)
Foreign Referenced Citations (5)
Number |
Date |
Country |
0259676 |
Mar 1988 |
EPX |
0348825 |
Jan 1990 |
EPX |
49-013516 |
Apr 1974 |
JPX |
48091197 |
Sep 1979 |
JPX |
49097096 |
Oct 1981 |
JPX |
Non-Patent Literature Citations (1)
Entry |
L. H. Gan, P. Blais, D. J. Carlsson, T. Suprunchuk and D. M. Wiles, Journal of Applied Polymer Science, 19; 69 (1975). |
Continuations (1)
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Number |
Date |
Country |
Parent |
301194 |
Jan 1989 |
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