Patent ID: 11891496
Assignee: H.B. FULLER COMPANY
Field: Macromolecular chemistry, polymers (Chemistry)
Classification: CPC C | IPC C

Claim 0:
1. A curable cyanoacrylate composition comprising
(i) at least one cyanoacrylate monomer, and
(ii) at least one free radical stabilizer,
wherein the free radical stabilizer comprises one or more compound(s) of formula (I), wherein (x) denotes either a double bond and R3 is absent, or (x) denotes a single bond and R3 is hydrogen, linear C1-C8 alkyl, branched or cyclic C3-C8 alkyl, linear C1-C8 alkoxy, branched or cyclic C3-C8 alkoxy, linear C2-C8 alkenyl, or branched or cyclic C3-C8 alkenyl;
R1 is hydrogen, linear C1-C8 alkyl, branched or cyclic C3-C8 alkyl, linear C1-C8 alkoxy, branched or cyclic C3-C8 alkoxy, linear C2-C8 alkenyl, branched or cyclic alkenyl, or a group —C(O)—O—R2′, wherein is linear C1-C12 alkyl, branched or cyclic C3-C12 alkyl, linear C2-C12 alkenyl, or branched or cyclic C3-C12 alkenyl, which linear C1-C12 alkyl, branched or cyclic C3-C12 alkyl, linear C2-C12 alkenyl, or branched or cyclic C3-C12 alkenyl optionally may be interrupted by one or more oxygen atoms;
R2 is linear C1-C12 alkyl, branched or cyclic C3-C12 alkyl, linear C2-C12 alkenyl, or branched or cyclic C3-C12 alkenyl, which linear C1-C12 alkyl, branched or cyclic C3-C12 alkyl, linear C2-C12 alkenyl, or branched or cyclic C3-C12 alkenyl optionally, may be interrupted by one or more oxygen atoms;
R4 is hydrogen, linear C1-C8 alkyl, branched or cyclic C3-C8 alkyl, linear C1-C8 alkoxy, branched or cyclic C3-C8 alkoxy, linear C2-C8 alkenyl, or branched or cyclic C3-C8 alkenyl; and
R5 and R5′ independently are hydrogen or a group —O—R6, wherein R6 independently is hydrogen, linear C1-C8 alkyl, branched or cyclic C3-C8 alkyl, linear C2-C8 alkenyl, or branched or cyclic C3-C8 alkenyl,
wherein one of R3 or R4 together with R1 may form a 5- to 18-membered saturated or unsaturated ring together with the carbon atoms to which they are attached, which is optionally interrupted by one or more oxygen atoms; or R3 and R4 may form a 5- to 18-membered saturated or unsaturated ring together with the carbon atom to which they are attached which is optionally interrupted by one or more oxygen atoms; or R1 with R3 and R4 together with the carbon atoms to which they are attached may form a 5- to 12-membered saturated or unsaturated bicyclic ring, which is optionally interrupted by one or more oxygen atoms.