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US 11,203,681 B2Granted
Recyclable cross-linked diene elastomers comprising furanyl groups and precursors thereof
AssigneesUniversite De Bordeaux, Institut Polytechnique De Bordeaux, Centre National De La Recherche Scientifique
InventorsFrédéric Peruch, Pierre Berto, Stéphane Grelier
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Abstract
Disclosed are new precursors of recyclable cross-linked diene elastomers including chain-end units with furanyl groups, their use in the preparation of the recyclable elastomers and their process of preparation. Also disclosed are new recyclable cross-linked diene elastomers, their preparation process and their uses.
Claims20
A compound having the following formula (I):
- wherein:
- n is an integer comprised between 10 and 2,000;
- Ra is selected from the group consisting of:
- H, linear or branched (C1-C5)alkyl, and halogen atom;
- A comprises at least one repeating unit (U) having the formula (U1) or (U2):
- with Ra being as defined above and Ra″ being selected from the group consisting of H, —CH═CH2, and —C(═CH2)(Ra), Ra being as defined above;
- B1 and B2, independently of each other, have the following formula (B):
- or the following formula (C):
- wherein at least one of B1 and B2 has the formula (B),
- wherein:
- X is:
- a bond or
- a group of formula —NH—X1—, wherein X1 is a linear or branched (C1-C5)alkylene group;
- Y is selected from the linear and branched (C1-C5)alkylene groups;
- Z and Z′ are independently of each other —O— or —NH—;
- W and W′ are independently of each other selected from the group consisting of:
- —C(═O)—NH—Y′—, —C(═O)—Y′—, and —Y′— groups, Y′ representing a linear or branched (C1-C5)alkylene group.
14 more elements
A compound having the following formula (IV):
- wherein:
- n is an integer comprised between 10 and 2,000;
- Ra is selected from the group consisting of:
- H, linear or branched (C1-C5)alkyl, and halogen atom;
- A comprises at least one repeating unit (U) having the formula (U1) or (U2):
- with Ra being as defined above and Ra″ being selected from the group consisting of H, —CH═CH2, and —C(═CH2)(Ra), Ra being as defined above;
- B1′ and B2′, independently of each other, have the following formula (B′):
- or form with the carbon atom carrying them a —C═O group,
- and wherein at least one of B1′ and B2′ is of formula (B′);
- wherein:
- X is:
- a bond or
- a group of formula —NH—X1—, wherein X1 is a linear or branched (C1-C5)alkylene group;
- Y is selected from the linear and branched (C1-C5)alkylene groups;
- Z is independently of each other —O— or —NH—.
12 more elements
Dependencies are inferred from the claim text.