Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From carboxylic acid or derivative thereof
Patent
1978-10-26
1980-09-30
Anderson, Harold D.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From carboxylic acid or derivative thereof
528310, 528324, 528330, 528331, 528338, 528346, 528349, 528336, 260 334P, 260563R, C08G 6926, C08G 6908
Patent
active
042257018
ABSTRACT:
The partially crystalline polyamides according to the invention are obtained by reacting terephthalic acid, or an amide-forming derivative thereof, with a diamine of the formula ##STR1## in which R.sub.1 and R.sub.2 singly or together are organic radicals. The reaction mixture can also contain up to 30% by weight of other amide-forming substances (aminocarboxylic acids or lactams, or mixtures of dicarboxylic acids and diamines), provided the formation of the partial crystallinity of the resulting polyamides is retained. The polyamides are suitable for producing moulded products of the most varied types. They are particularly applicable for producing filaments and fibres.
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Chemical Abstracts, 50, (1956), 15095d.
Chemical Abstracts, 53, (1959), 6641o.
Chemical Abstracts, 85, (1976), 79037(d).
Peter Heinz
Pfeifer Josef
Anderson Harold D.
Ciba-Geigy Corporation
Hall Luther A. R.
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