2-Component crosslink of end-functionalized polyacrylates
AssigneeTesa SE
InventorsMarc Husemann, Stephan Zöllner
Life of this patent
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Abstract
Method for increasing the molecular weight of polyacrylates, in which polyacrylates, functionalized at least in part of their chain ends by functional groups X, are reacted with a compound having at least functional groups Y capable of linking reactions with functional groups X.
Claims8
A process for increasing the molecular weight of polyacrylates, wherein polyacrylates functionalized at least on some of their chain ends by functional groups X are prepared by the RAFT process using thiocarbonates selected from the group consisting of
- wherein Φ represents a phenyl ring, which is unfunctionalized or functionalized by alkyl or aryl substituents linked directly or via ester or ether bridges, or represents a cyano group and k represents C1 to C18 alkyl, C2 to C18 alkenyl, C2 to C18 alkynyl, in each case linear or branched;
- aryl, phenyl, benzyl, aliphatic or aromatic heterocycle and optionally contains one or more groups selected from the group consisting of —NH2, —NH—RVI, —NRVIRVII, —NH—C(O)—RVI, —NRVI—C(O)—RVII, —NH—C(S)—RVI, —NRVI—C(S)—RVII,
- where RVI and RVII are C1 to C18 alkyl, C2 to C18 alkenyl, C2 to C18 alkynyl, in each case linear or branched;
- aryl, phenyl, benzyl, aliphatic or aromatic heterocycles, and are independent of one another or the same,
- and are then reacted with at least one compound containing at least two functional groups Y capable of entering into linking reactions, in the form of addition reactions, with the functional groups X.
A process for increasing the molecular weight of polyacrylates, wherein polyacrylates functionalized at least on some of their chain ends by functional groups X are prepared by the RAFT process using thiocarbonates selected from the group consisting of
- wherein Φ represents a phenyl ring, which is unfunctionalized or functionalized by alkyl or aryl substituents linked directly or via ester or ether bridges, or represents a cyano group and k represents C1 to C18 alkyl, C2 to C18 alkenyl, C2 to C18alkynyl, in each case linear or branched;
- aryl, phenyl, benzyl, aliphatic or aromatic heterocycle and optionally contains one or more groups selected from the group consisting of —NH2, —NH—RVI, —NRVIRVII, —NH—C(O)—RVI, —NRVI—C(O)—RVII, —NH—C(S)—RVI, —NRVI—C(S)—RVII,
- where RVI and RVII are C1 to C18 alkyl, C2 to C18 alkenyl, C2 to C18 alkynyl, in each case linear or branched;
- aryl, phenyl, benzyl, aliphatic or aromatic heterocycles, and are independent of one another or the same,
- and are then reacted with at least one compound containing at least two functional groups Y capable of entering into linking reactions, in the form of substitution reactions, with the functional groups X.
A process for increasing the molecular weight of polyacrylates, wherein polyacrylates functionalized at least on some of their chain ends by functional groups X are prepared by the RAFT process using thiocarbonates selected from the group consisting of
- wherein Φ represents a phenyl ring, which is unfunctionalized or functionalized by alkyl or aryl substituents linked directly or via ester or ether bridges, or represents a cyano group and k represents C1 to C18 alkyl, C2 to C18 alkenyl, C2 to C18alkynyl, in each case linear or branched;
- aryl, phenyl, benzyl, aliphatic or aromatic heterocycle and optionally contains one or more groups selected from the group consisting of —NH2, —NH—RVI, —NRVIRVII, —NH—C(O)—RVI, —NRVI—C(O)—RVII, —NH—C(S)—RVI, —NRVI—C(S)—RVII,
- where RVI and RVII are C1 to C18 alkyl, C2 to C18 alkenyl, C2 to C18 alkynyl, in each case linear or branched;
- aryl, phenyl, benzyl, aliphatic or aromatic heterocycles, and are independent of one another or the same,
- and are then reacted with at least one compound containing at least two functional groups Y capable of bonding the polyacrylates using the functional groups X.
Dependencies are inferred from the claim text.