Patent · US Active

Adhesive composition having a gel content based on cross-linking via keto groups or aldehyde groups

US11884846B2 · kind B2 · utility

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18Claims

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Assignee

BASF SE

Inventors

Matthias Gerst · Maikammer, DE
Dirk Wulff · Schifferstadt, DE

Key dates

Filing date	Apr 10, 2019
Grant date	Jan 30, 2024
Priority date	—
Expiry date	Mar 3, 2041

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC09J2433/00
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

Described is an adhesive composition in the form of an aqueous polymer dispersion comprising tackifiers, a compound crosslinking via keto or aldehyde groups and a pressure-sensitive adhesive polymer which is formed by emulsion polymerization from soft (meth)acrylic ester monomers, acid monomers, monomers having keto or aldehyde groups, styrene and optionally further monomers, wherein the polymerization may be carried out in the presence of chain transfer agents. The pressure-sensitive adhesive polymer has certain gel contents. The pressure-sensitive adhesive composition may be used to produce adhesive labels, adhesive tapes or adhesive films.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.