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US4713437A
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Salt of oxaalkylenediamine with dicarboxylic acid, containing hydrazine, preparation, and nylon prepared therefrom
Assignee: BASF SE
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Filing: 1986-06-18
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Granted: 1987-12-15
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Expires: 2006-06-18
Abstract
Abstract Salts of oxaalkylenediamines of the formula I H.sub.2 N--(R.sup.1 --O).sub.n --R.sup.2 --NH.sub.2 I where R 1 and R 2 may be identical or different and are each alkylene of 2 to 4 carbon atoms and n is an integer from 1 to 3, and alkanedicarboxylic acids of 4 to 12 carbon atoms, terephthalic acid or isophthalic acid, which contain hydrazine, their preparation, and nylons prepared from them.
Inventors
- 👤 Georg Pilz
- 👤 Gert Buerger
- 👤 Manfred Barl
- 👤 Gerhard Thiel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 02:00
CPC Classifications
C; C08; C08G; C08G69/00; C08G69/40; C07; C07C; C07C51/00; C07C51/41; C07C51/412; C07C55/00; C07C55/02; C07C55/12; C07C55/14; C07C55/20; C07C55/21; C07C63/00; C07C63/14; C07C63/15; C07C63/24; C07C63/26; C07C63/28
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
64 words
A composition comprising a salt of an oxaalkylenediamine of the formula I where R 1 and R 2 H.sub.2 N--(R.sup.1 --O).sub.n --R.sup.2 --NH.sub.2 I are identical or different and are each alkylene of 2 to 4 carbon atoms and n is an integer from 1 to 3, and an alkanedicarboxylic acid of 4 to 12 carbon atoms, terephthalic acid or isophthalic acid, and hydrazine.
Claim 2
Dependent Claim
64 words
A composition comprising a salt of an oxaalkylenediamine of the formula I where R 1 and R 2 H.sub.2 N--(R.sup.1 --O).sub.n --R.sup.2 --NH.sub.2 I are identical or different and are each alkylene of 2 to 4 carbon atoms and n is an integer from 1 to 3, and an alkanedicarboxylic acid of 4 to 12 carbon atoms, terephthalic acid or isophthalic acid, and hydrazine.
Claim 3
Dependent Claim
19 words
A composition as claimed in claim 1, which contains from 5 to 200 ppm, based on oxaalkylenediamine, of hydrazine.
Claim 4
Dependent Claim
37 words
A composition comprising a salt of an oxaalkylenediamine of the formula II H.sub.2 N--(CH.sub.2).sub.3 --O--(CH.sub.2).sub.2 --O--(CH.sub.2).sub.3 --NH.sub.2 II and adipic acid or sebacic acid, which contains from 5 to 200 ppm, based on the diamine, of hydrazine.
Claim 5
Dependent Claim
37 words
A composition comprising a salt of an oxaalkylenediamine of the formula II H.sub.2 N--(CH.sub.2).sub.3 --O--(CH.sub.2).sub.2 --O--(CH.sub.2).sub.3 --NH.sub.2 II and adipic acid or sebacic acid, which contains from 5 to 200 ppm, based on the diamine, of hydrazine.
Claim 6
Dependent Claim
71 words
A process for the preparation of a salt of an oxaalkylenediamine of the formula I with a dicarboxylic acid selected from the group consisting of an alkanedicarboxylic acid of 4 to 12 carbon atoms, terephthalic acid and isophthalic acid which comprises reacting the said oxaalkylenediamine with the said acid in solution, wherein hydrazine in the form of hydrazine hydrate is added to the dicarboxylic acid oxaalkylenediamine or mixtures thereof starting reactants.
Claim 7
Dependent Claim
71 words
A process for the preparation of a salt of an oxaalkylenediamine of the formula I with a dicarboxylic acid selected from the group consisting of an alkanedicarboxylic acid of 4 to 12 carbon atoms, terephthalic acid and isophthalic acid which comprises reacting the said oxaalkylenediamine with the said acid in solution, wherein hydrazine in the form of hydrazine hydrate is added to the dicarboxylic acid oxaalkylenediamine or mixtures thereof starting reactants.
Claim 8
Dependent Claim
27 words
A process as claimed in claim 4, wherein from 5 to 200 ppm, based on the oxaalkylenediamine, of hydrazine in the form of hydrazine hydrate are added.
Claim 9
Dependent Claim
20 words
A process as claimed in claim 4, wherein hydrazine in the form of hydrazine hydrate is added to the oxaalkylenediamine.
Claim 10
Dependent Claim
82 words
A nylon prepared by condensation of a salt of an oxamethylenediamine of the formula I H.sub.2 N--(R.sup.1 --O).sub.n --R.sup.2 --NH.sub.2 I where R 1 and R 2 may be identical or different and are each alkylene of 2 to 4 carbon atoms and n is an integer from 1 to 3, and an alkanedicarboxylic acid of 4 to 12 carbon atoms, terephthalic acid or isophthalic acid, which contain from 5 to 200 ppm, based on the oxaalkylenediamine, of hydrazine, at nylon-forming temperatures.
Claim 11
Dependent Claim
82 words
A nylon prepared by condensation of a salt of an oxamethylenediamine of the formula I H.sub.2 N--(R.sup.1 --O).sub.n --R.sup.2 --NH.sub.2 I where R 1 and R 2 may be identical or different and are each alkylene of 2 to 4 carbon atoms and n is an integer from 1 to 3, and an alkanedicarboxylic acid of 4 to 12 carbon atoms, terephthalic acid or isophthalic acid, which contain from 5 to 200 ppm, based on the oxaalkylenediamine, of hydrazine, at nylon-forming temperatures.
References Cited (Backward Citations)
US4165335A
Cited
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-12-14 | 1991-06-15 | 1991-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-12-14 | 1995-06-15 | 1995-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-12-14 | 1999-06-15 | 1999-12-15 | $7700.00 | Window Closed / Lapsed |