Abstract: The present invention provides a method for the preparation of hydrophilic water insoluble, gel-free copolymers of 2-hydroxyethyl methacrylate and at least one of acrylic acid or methacrylic acid, and 2-hydroxyethyl methacrylate, 4-hydroxybutyl acrylate and acrylic or methacrylic acid, where the copolymers are prepared in a solution of water and alcohol using monomeric 2-hydroxyethyl methacrylate containing ethylene glycol dimethacrylate impurities up to about 0.15% by weight and substantially in the absence of a chain transfer agent. The copolymers are convertible to water soluble copolymers by pH adjustment. The invention also provides a method for the preparation of a copolymer of 2-hydroxyethyl methacrylate and 4-hydroxybutyl acrylate, and a homopolymer of 2-hydroxyethyl methacrylate in a solution of water and either a monoalcohol or a polyhydric alcohol.

Abstract: Method for Producing a multiple-layer label and device for implementing said method. A device for manufacturing a multiple-layer tag has two laminating rollers (10, 11) arranged as a pair, between which portions (14) of a coating web (1) are joined to a supporting web (13). The coating web (1) is alternately stopped and driven between the laminating rollers (10, 11) at the speed of the supporting web (13) by an advancing means (9). By means of stopping the coating web (1) for a longer or shorter period of time, the distance apart of the portions (14) on the supporting web (13) can be changed.