Patent ID: 11878969
Assignee: COVESTRO (NETHERLANDS) B.V.
Field: Macromolecular chemistry, polymers (Chemistry)
Classification: CPC C | IPC C

Claim 0:
1. A multi-aziridine compound having:
a) from 2 to 6 of the following structural units (A):, whereby
R1 is H;
R2 and R4 are independently chosen from H, a linear group containing from 1 to 8 carbon atoms and optionally containing one or more heteroatoms, a branched or cyclic group containing from 3 to 8 carbon atoms and optionally containing one or more heteroatoms, phenyl, benzyl, or pyridinyl;
R3 is linear group containing from 1 to 8 carbon atoms and optionally containing one or more heteroatoms, a branched or cyclic group containing from 3 to 8 carbon atoms and optionally containing one or more heteroatoms, phenyl, benzyl, or pyridinyl;
or R2 and R3 (in case R2 is different than H) may be part of the same cyclic group containing from 3 to 8 carbon atoms;
R′=H or an aliphatic hydrocarbon group containing from 1 to 12 carbon atoms;
R″=H, an aliphatic hydrocarbon group containing from 1 to 12 carbon atoms, a cycloaliphatic hydrocarbon group containing from 5 to 12 carbon atoms, an aromatic hydrocarbon group containing from 6 to 12 carbon atoms, CH2—O—(C═O)—R′″, CH2—O—R″″, or CH2—(OCR′″″HCR′″″H)n—OR′″″, whereby R″″ is an aliphatic hydrocarbon group containing from 1 to 12 carbon atoms and R″″ is an aliphatic hydrocarbon group containing from 1 to 12 carbon atoms or an aromatic hydrocarbon group containing from 6 to 12 carbon atoms, n being from 1 to 35, R′″″ independently being H or an aliphatic hydrocarbon group containing from 1 to 12 carbon atoms and R″″″ being an aliphatic hydrocarbon group containing from 1 to 4 carbon atoms;
or R′ and R″ may be part of the same saturated cycloaliphatic hydrocarbon group containing from 5 to 8 carbon atoms;
m is an integer from 1 to 6;
b) one or more linking chains wherein each one of these linking chains links two of the structural units A; and
c) a molecular weight in the range from 600 Daltons to 5000 Daltons.