EP 3941966 A1 20220126 - USE OF COPOLYAMIDES FOR MANUFACTURING COMPOSITIONS THAT REMAIN RIGID UNDER THE EFFECT OF MOISTURE
Title (en)
USE OF COPOLYAMIDES FOR MANUFACTURING COMPOSITIONS THAT REMAIN RIGID UNDER THE EFFECT OF MOISTURE
Title (de)
VERWENDUNG VON COPOLYAMIDEN ZUR HERSTELLUNG VON UNTER FEUCHTIGKEITSEINWIRKUNG STARR BLEIBENDEN ZUSAMMENSETZUNGEN
Title (fr)
UTILISATION DE COPOLYAMIDES POUR LA FABRICATION DE COMPOSITIONS A RIGIDITE STABLE SOUS L'EFFET DE L'HUMIDITE
Publication
Application
Priority
- EP 19305353 A 20190322
- EP 2020058016 W 20200323
Abstract (en)
[origin: WO2020193480A1] The invention mainly relates to the use of a semi-crystalline copolyamide having the formula A/X1Y, where: A is a repeating unit obtained by polycondensation of at least one C6- to C18-lactam, or at least one C6- to C18-amino acid, or at least one repeating unit XY obtained by polycondensation of at least one linear aliphatic C4- to C18-diamine (X) and at least one aliphatic C6- to C18-dicarboxylic acid (Y); and X1Y is a repeating unit obtained by polycondensation of at least one cycloaliphatic diamine (X1) and at least one aliphatic C6- to C18-dicarboxylic acid (Y), the mass ratio between comonomer A and comonomer X1Y ranging from 60/40 to 90/10, for preparing objects of which the tensile modulus, measured according to ISO 527, does not vary more than 20% between the dry state and the water-saturated state. The invention further relates to a composition comprising 25 to 65% by weight of said semi-crystalline copolyamide, 35 to 75% by weight of reinforcements, 0 to 10% by weight of at least one impact modifier, 0 to 10% by weight of at least one viscosity modulating agent, 0 to 20% by weight of at least one filler, and 0 to 5% by weight of additives. The invention finally relates to a method for manufacturing said composition and to a molded object obtainable from said composition.
IPC 8 full level
C08G 69/26 (2006.01); B29C 45/00 (2006.01); C08G 69/36 (2006.01); C08K 7/06 (2006.01); C08K 7/14 (2006.01); C08K 7/20 (2006.01); C08L 77/02 (2006.01); C08L 77/06 (2006.01)
CPC (source: EP)
C08G 69/265 (2013.01); C08G 69/36 (2013.01); C08K 7/06 (2013.01); C08K 7/14 (2013.01); C08L 77/02 (2013.01); C08L 77/06 (2013.01)
Citation (search report)
See references of WO 2020193480A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
EP 3712197 A1 20200923; CN 113631633 A 20211109; EP 3941966 A1 20220126; WO 2020193480 A1 20201001
DOCDB simple family (application)
EP 19305353 A 20190322; CN 202080023214 A 20200323; EP 2020058016 W 20200323; EP 20711962 A 20200323