Patent application EP19305791A (EP), filed 2019-06-19
Publication number: EP3753970A1
Title: COMPOSITION COMPRISING PIPERIDINE-CONTAINING POLYAMIDE
Abstract: [0001]    The present invention relates in particular to a composition comprising a non-crosslinked polyamide comprising structural units derived from piperidine and an aromatic dicarboxylic acid and a (copolyamide different from the non-crosslinked polyamide. The invention further relates to a method of preparing such composition, molded articles comprising such composition and thermoplastic composites comprising such composition.
IPC codes: C08G  69/    26            A I
C08L  77/    06            A I
C08L  77/    10            A I
Claims: number: 1
text: A composition comprising at least:
number: 2
text: The composition according to claim 1, wherein the non-crosslinked a) comprises structural units of formula (2):
number: 3
text: The composition according to claim 2, wherein R<1> is hydrogen or a linear, branched, cyclic and/or aromatic C<1-30> hydrocarbon residue which optionally forms a ring together with R<2>, and R<2> and R<3> are independently a bond or a linear, branched, cyclic and/or aromatic C<1-30> hydrocarbon residue.
number: 4
text: The copolyamide according to claim 2 or 3, wherein R<1> is hydrogen or a C<1-6> alkyl residue which optionally forms a ring together with R<2>, R<2> is a bond or a linear, branched and/or cyclic C<1-24> alkyl residue, preferably a bond or a linear C<1-24> alkyl residue, and R<3> is a bond, a C<1-6> alkylaryl residue or an aryl residue, preferably a bond or a phenyl residue.
number: 5
text: The composition according to any one of the preceding claims, in which the concentration of the non-crosslinked polyamide a) is from 10 wt.% to 95 wt.%, preferably from 10 wt.% to 80 wt.%, more preferably from 20 wt.% to 80 wt.%, relative to the total weight of the composition..
number: 6
text: The composition according to any one of the preceding claims, in which the non-crosslinked polyamide a) is a homopolymer.
number: 7
text: The composition according to any one of the preceding claims, wherein the non-crosslinked polyamide a) is obtainable by polymerization of a diamine of formula (3):
number: 8
text: The composition according to claim 7, wherein the diamine has the formula (5):
number: 9
text: The composition according to claim 7, wherein the diamine has the formula (6):
number: 10
text: The composition according to claim 7, wherein the diamine has the formula (7):
number: 11
text: The composition according to any one of the preceding claims, wherein in the aromatic dicarboxylic acid, ester or halogenide of formula (4) R<3> is a bond or aryl, preferably a bond or phenyl.
number: 12
text: The composition according to claims 7 to 10, wherein the diamine is selected from 4,4'-bipiperidine, 4,4'-ethylenedipiperidine, 4,4'-trimethylenedipiperidine, 4-aminopiperidine, 4-(aminomethyl)piperidine, 2-(aminomethyl)piperidine, 3-(aminoethyl)piperidine, and 4-(aminobutyl)piperidine and the aromatic dicarboxylic acid is selected from isophthalic acid, terephthalic acid, diphenic acid, and biphenyl-4,4'-dicarboxylic acid; preferably wherein the diamine is selected from 4,4'-trimethylenedipiperidine and 4-aminopiperidine and the aromatic dicarboxylic acid is selected from isophthalic acid, terephthalic acid and diphenic acid.
number: 13
text: The composition according to any one of the preceding claims, in which the non-crosslinked polyamide a) has a number average molecular weight (Mn) comprised from 2,500 to 12,000 g/mol.
number: 14
text: The composition according to any one of the preceding claims, in which the non-crosslinked polyamide a) comprises structural units derived from:
number: 15
text: A composition obtained by blending in melt of at least:
number: 16
text: Method of preparing the composition according to claims 1 to 14 comprising at least the step of blending in melt at least the non-crosslinked polyamide a) comprising structural units of formula (1):
number: 17
text: A molded article comprising a composition according to any one of claims 1 to 14 or according to claim 15.
number: 18
text: A thermoplastic composite comprising a composition according to any one of claims 1 to 14 or according to claim 15 and non-continuous and/or continuous fibers, preferably glass or carbon fibers.
Office action: search_report, dated 2020-12-23
Rejection reasons: novelty_epc_54
Prior art cited: ref_id: US4223105A
ref_type: patent
severity: background
ref_id: WO2019121823A1
ref_type: patent
severity: background
ref_id: WO2019121824A1
ref_type: patent
severity: background
ref_id: US3371068A
ref_type: patent
severity: background
ref_id: US3544527A
ref_type: patent
severity: background
ref_id: US4223105A
ref_type: patent
severity: background
ref_id: WO2019121823
ref_type: patent
severity: novelty_destroying
ref_id: WO2019121824
ref_type: patent
severity: novelty_destroying
ref_id: US3371068
ref_type: patent
severity: background
ref_id: US3544527
ref_type: patent
severity: background
ref_id: US4223105
ref_type: patent
severity: background
Final disposition: pending (2020-12-23)