C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
C08G 83/00 (2006.01) C08G 69/00 (2006.01) C08G 69/02 (2006.01) C08G 69/04 (2006.01) C08G 69/26 (2006.01) C08G 69/28 (2006.01) C08G 69/32 (2006.01) C08G 69/36 (2006.01) C08G 69/48 (2006.01) C08L 77/00 (2006.01) C08L 77/02 (2006.01) C08L 77/06 (2006.01) C08L 101/00 (2006.01)
Patent
CA 2373024
The invention concerns hyperbranched copolyamides (HBPA), the method for obtaining them and their use as additive, in particular as melted viscosity modifier in thermoplastic polymer compositions. Said copolyamide is obtained by reacting a monomer (I): A-R-B¿f? where A and B = polymerisation functions of first and second types respectively, capable of reacting with each other; R = hydrocarbon entity and f = total number of B per monomer (preferably 2 <= f <= 10); with a monomer (II): A'-R'-B' or the corresponding lactams, where A', B', R' having the same definition as above respectively for A, B, R. Said HBPA has a I/II molar ratio such that 0.125 <= I/II <= 2. One of the entities R or R' of (I) or (II) is aliphatic, cycloaliphatic or arylaliphatic. For example: A = NH¿2? AND B = COOH or A = COOH and B = NH¿2? with F = 2. A' = NH¿2? and B' = COOH or A' = COOH and B' = NH¿2?. A-R-B¿2?, for example: 5-aminoisophthalic acid or 3,5-diaminobenzoic acid and A'-R'-B' = .epsilon.-caprolactam. The invention also concerns the yarns, fibres, moulded parts obtained from polymer compositions (for example, P.A) containing the inventive HBPA as additive.
L'invention est relative à des copolyamides hyperbranchés (PAHB), à leur obtention et à leur utilisation comme additif, notamment comme modificateur de viscosité fondue dans des compositions polymères thermoplastiques. Ce copolyamide est obtenu par réaction entre un monomère (I): A-R-Bf avec A et B = fonctions de polymérisation d'un 1er et 2nd types, respectivement, capables de réagir entre elles, R = entité hydrocarbonée et f = nombre total de B par monomère (de préférence 2 <=f <= 10); et un monomère (II): A'-R'-B' ou les lactames correspondants, avec A', B', R' ayant la même définition que celle donnée ci-dessus respectivement pour A, B, R. Ce PAHB possède un rapport molaire I/II tel que 0,125 <=I/II <= 2. L'une des entités R ou R' de (I) ou (II) est aliphatique, cycloaliphatique ou arylaliphatique. Par exemple: A = NH2 et B = COOH ou A = COOH et B = NH2 avec F = 2. A' = NH2 et B' = COOH ou A' = COOH et B' = NH2. A-R-B2 e.g.: Acide 5-aminoisophtalique ou acide 3,5- diaminobenzoïque et A'-R'-B' = .epsilon.-caprolactame. Les fils, fibres, films, pièces moulées obtenues à partir de compositions de polymères (e.g. P.A) additivées avec du PAHB selon l'invention, sont également compris dans cette dernière.
Bouquerel Franck
Sassi Jean-Francois
Rhodianyl
Robic
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