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US 2016/0096928 A1Published application
Polyimides, processes for producing said polyimides and articles obtained from said polyimides
OwnerStephane JEOLinventor
Life of this patent
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Abstract
The present invention relates to (co)polymers comprising at least one imide function, making use of at least one diamine chosen from 2,5-bis(aminomethyl)furan and 2,5-bis(aminomethyl)tetrahydrofuran, or diisocyanate equivalents thereof. These (co)polymers can be converted into articles by various methods.
Claims20
A (co)polymer comprising the recurring unit of following formula I:
- in which
- X is a divalent group of formula Ia or Ib below:
- in which
- R is a trivalent hydrocarbon-based group selected from:
- a saturated or unsaturated, aliphatic or cycloaliphatic group, optionally interrupted with one or more heteroatoms, and optionally substituted with one or more functional or non-functional groups;
- an aromatic, alkylaromatic or arylaliphatic group, optionally interrupted with one or more heteroatoms, and optionally substituted with one or more functional or non-functional groups;
- R′ is a tetravalent hydrocarbon-based group selected from:
- a saturated or unsaturated, aliphatic or cycloaliphatic group, optionally interrupted with one or more heteroatoms, and optionally substituted with one or more functional or non-functional groups;
- an aromatic, alkylaromatic or arylaliphatic group, optionally interrupted with one or more heteroatoms, and optionally substituted with one or more functional or non-functional groups;
- Y is:
- a covalent bond, when X corresponds to formula Ib,
- a divalent group of formula Ic or Id below, when X corresponds to formula Ia:
- with R as defined above.
10 more elements
A polyamic acid corresponding to formula V below:
- wherein R′ is a tetravalent hydrocarbon-based group selected from:
- a saturated or unsaturated, aliphatic or cycloaliphatic group, optionally interrupted with one or more heteroatoms, and optionally substituted with one or more functional or non-functional groups;
- an aromatic, alkylaromatic or arylaliphatic group, optionally interrupted with one or more heteroatoms, and optionally substituted with one or more functional or non-functional groups.
An ammonium carboxylate salt obtained from one or more compounds A or D and one or more diamines B and optionally one or more diamines C,
- wherein compound A comprises two anhydride functions,
- diamine B is of formula II or III,
- and
- diamine C is of formula IV:
- NH2—R3—NH2 (IV)
- with R3 being a hydrocarbon-based divalent radical which is aliphatic, cycloaliphatic or arylaliphatic, and saturated and/or unsaturated, aromatic or alkylaromatic, and which optionally comprises heteroatoms, and
- compound D comprises an anhydride function and a carboxylic acid function.
4 more elements
Dependencies are inferred from the claim text.