公开(公告)号：DE1142696B

公开(公告)日：1963-01-24

申请号：DEB0059650

申请日：1960-10-06

Applicant: BASF AG

Inventor： ILLING DR GERHARD ,  SCHWARTZ DR ERICH ,  MERTES DR FRIEDRICH

IPC: C08K3/32 ,  C08K5/098 ,  C08L77/00

Abstract: In a process for the production of synthetic linear polyamides with stabilized melt viscosity, 0,001 to 1% by weight of an acid of phosphorus or a metal salt thereof and 0,01 to 2% by weight of an alkane monocarboxylic or alkane dicarboxylic acid or a salt thereof with a metal of Group I or II of the Periodic Table is added thereto prior to the shaping of the polyamide (the weight of the phosphorus acid component in the mixture being less than that of the carboxylic acid component). Specified phosphorus acid components are hypophosphorous, phosphorous, hypodiphosphoric, orthophosphoric, pyrophosphoric, hexametaphosphoric and metaphosphoric acid. Specified linear polyamides are polycaprolactam, polycaprylic lactam, polylauric lactam, polyhexamethylene adipamide, polyoctamethylene sebacamide, polyurethanes and polyureas. Specified alkane carboxylic acids are capric, palmitic, stearic, behenic, undecane dicarboxylic, acetic, caproic, oenanthic, succinic and adipic acid. In the examples:-(1) polycaprolactam is kneaded at 250 DEG to 260 DEG C. with disodium hydrogen phosphite pentahydrate, calcium stearate and di-t-butyl-p-cresol; (2) polycaprylic lactam is homogenized at 260 DEG to 280 DEG C. with calcium stearate and disodium hydrogen phosphite and (3) polyhexamethylene adipamide is kneaded with calcium stearate and disodium hydrogen phosphite.

公开(公告)号：DE1212720B

公开(公告)日：1966-03-17

申请号：DEB0077128

申请日：1964-06-06

Applicant: BASF AG

Inventor： GEHM DR ROBERT ,  KUNDE DR JOACHIM ,  MERTES DR FRIEDRICH

IPC: C08G18/10

公开(公告)号：DE1200531B

公开(公告)日：1965-09-09

申请号：DEB0074560

申请日：1963-12-06

Applicant: BASF AG

Inventor： GEHM DR ROBERT ,  KUNDE DR JOACHIM ,  MERTES DR FRIEDRICH

IPC: C08G18/10

Abstract: Elastic moulded polyurethane articles are prepared by reacting in solution in an inert polar solvent a linear isocyanate modified polyhydroxyl compound of M.W. 750-6000 and a melting point below 50 DEG C. having terminal -NCO groups with a dihydrazino-di-s-triazino compound in which monohydrazino-s-triazines are linked via a bivalent diamine radical, and moulding the resulting solution while removing the solvent by heating. The dihydrazino compound may have the formula where A is a diamine radical attached to the triazine rings via its nitrogen atoms and B is hydrogen chlorine or a monovalent aliphatic or aromatic group of 1-8 C or -OR, or -NR1R2, where R1 and R2 are hydrogen or monovalent aliphatic or aromatic groups of 1-8 C.