PRESSURE-SENSITIVE ADHESIVES, BASED ON PROCESSED MATERIALS AND METHODS WITH UV CURING Russian patent published in 2017 - IPC C09J163/00 C09J163/06 C09J133/02 C09J133/04 C09J7/02 C09J191/00 

FIELD: chemistry.

SUBSTANCE: in order to produce the pressure-sensitive adhesive (PSA), in the first embodiment, the epoxidized natural oil or fat reaction is carried out with at least one additional reagent, selected from the dimeric acid, dibasic acid, or its combination, to prepare the PSA precursor at the increased temperature during the given period of time. The photoacid generator is mixed with the PSA precursor. Apply the PSA precursor onto the carrier. The PSA precursor is cured by radiation to produce the PSA adhesive. Additionally, the product is cured at increased temperature for less than two minutes. In another embodiment, the epoxidized oil or fat with the dimeric acid and the acrylic or vinyl functionalized reagent is reacted. The photoinitiator is added and the PSA precursor is cured by UV radiation.

EFFECT: increase of the adhesives stability over time, improvement of the peeling characteristics, the increase of the gel content percentage.

16 cl, 3 dwg, 17 tbl, 66 ex