Patent application EP19305790A (EP), filed 2019-06-19
Publication number: EP3753969A1
Title: METHOD FOR PRODUCTION OF THERMOPLASTIC COMPOSITES AND THEIR USES
Abstract: [0001]    The invention relates to a method for the production of a fiber reinforced polymer composite comprising carrying out a polymer matrix comprising a polyamide, and continuous reinforcing fibers, such as glass or carbon fibers. The invention further relates to fiber reinforced polymer composite.
IPC codes: C08G  69/    26            A I
C08L  77/    06            A I
C08L  77/    10            A I
Claims: number: 1
text: A method for the production of a fiber reinforced polymer composite comprising at least impregnating continuous reinforcing fiber with a polymer matrix comprising at least a polyamide comprising structural units of formula (1):
number: 2
text: The method according to claim 1, wherein the continuous reinforcing fiber is glass or carbon fiber.
number: 3
text: The method according to claim 1 or 2, wherein the polyamide comprises structural units of formula (2):
number: 4
text: The method according to claim 3, 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: 5
text: The method according to claim 3 or 4, 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: 6
text: The method according to any one of the preceding claims in which the polyamide is a homopolymer.
number: 7
text: The method according to any one of the preceding claims wherein the polyamide is obtainable by polymerization of a diamine of formula (3):
number: 8
text: The method according to any one of the preceding claims wherein the diamine has the formula (5):
number: 9
text: The method according to any one of the preceding claims wherein the diamine has the formula (6):
number: 10
text: The method according to any one of the preceding claims wherein the diamine has the formula (7):
number: 11
text: The method according to any one of the previous claims wherein in the aromatic dicarboxylic acid or ester of formula (4) R<3> is a bond or aryl, preferably a bond or phenyl.
number: 12
text: The method according to any one of the previous claims 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 method according to any one of the preceding claims in which the polyamide comprises an other diamine of formula H2N-R-NH2 wherein R is an aliphatic, an aromatic, an arylaliphatic or an alkylaromatic radical.
number: 14
text: The method according to any one of the preceding claims in which the polyamide comprises also at least one dicarboxylic acid.
number: 15
text: The method according to any one of the preceding claims in which the polyamide comprises recurring units derived from:
number: 16
text: The method according to any one of the preceding claims, comprising at least the steps of:
number: 17
text: The method according to any one of the preceding claims, wherein the concentration of the polyamide in the polymer matrix is at least 50 wt.%, at least 60 wt.%, at least 70 wt.% at least 80 wt.%, at least 90 wt.%, at least 95 wt.% or at least 99.5 wt.%, or equal to 100 wt.%, relative to the total weight of the matrix composition.
number: 18
text: The method according to any one of the preceding claims, wherein the concentration of the polymer matrix is at least 10 wt.%, at least 20 wt.%, at least 25 wt.%, at least 30 wt.%, at least 35 wt.% or at least 40 wt.%, relative to the total weight of the composite.
number: 19
text: The method according to any one of the preceding claims wherein the concentration of the fiber is at least 20 wt.%, at least 25 wt.%, at least 30 wt.%, at least 35 wt.%, relative to the total weight of the thermoplastic composite.
number: 20
text: A fiber reinforced polymer composite obtainable by the method as claimed in one of claims 1 to 19.
number: 21
text: A fiber reinforced polymer composite, comprising at least a continuous reinforcing fiber aligned lengthwise in a polymer matrix comprising a d polyamide comprising at least a structural unit of formula (1):
number: 23
text: The fiber reinforced polymer composite according to claim 21 or 22, wherein the concentration of the polymer matrix is at least 10 wt.%, at least 20 wt.%, at least 25 wt.%, at least 30 wt.%, at least 35 wt.% or at least 40 wt.%, relative to the total weight of the composite.
number: 24
text: The fiber reinforced polymer composite according to claims 21 to 23, wherein the concentration of the fiber is at least 20 wt.%, at least 25 wt.%, at least 30 wt.%, at least 35 wt.%, relative to the total weight of the thermoplastic composite.
number: 25
text: An article comprising the fiber reinforced polymer composite according to claims 21 to 24 or obtained by the method as claimed in one of claims 1 to 19, wherein the article is selected from the group consisting of components for automobiles, trucks, commercial airplanes, aerospace, oil and gas drilling components, rail, household appliances, computer hardware, hand held devices, recreation and sports, structural component for machines, structural components for buildings, structural components for photovoltaic equipments or structural components for mechanical devices.
Office action: search_report, dated 2020-12-23
Rejection reasons: novelty_epc_54
Prior art cited: ref_id: WO2019121826A1
ref_type: patent
severity: background
ref_id: US2010215920A1
ref_type: patent
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ref_id: US3544527A
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ref_id: EP0372505A2
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severity: background
ref_id: - KE CHEN ET AL: "Thermoplastic Reaction Injection Pultrusion for Continuous Glass Fiber-Reinforced Polyamide-6 Composites", MATERIALS, vol. 12, no. 3, 2 February 2019 (2019-02-02), pages 463, XP055646410, DOI: 10.3390/ma12030463
ref_type: npl
severity: background
ref_id: US3371068
ref_type: patent
severity: background
ref_id: US3544527
ref_type: patent
severity: background
ref_id: EP0217212
ref_type: patent
severity: background
ref_id: EP0372505
ref_type: patent
severity: background
ref_id: US2004044105
ref_type: patent
severity: background
ref_id: US2010215920
ref_type: patent
severity: background
ref_id: WO2019121826
ref_type: patent
severity: novelty_destroying
ref_id: - KE CHEN ET AL, "Thermoplastic Reaction Injection Pultrusion for Continuous Glass Fiber-Reinforced Polyamide-6 Composites", MATERIALS, (20190202), vol. 12, no. 3, doi:10.3390/ma12030463, page 463, XP055646410 [A] 1-25 * the whole document *
ref_type: npl
severity: background
Final disposition: pending (2020-12-23)