Patent ID: 11873429
Assignee: BOSTIK SA
Field: Macromolecular chemistry, polymers (Chemistry)
Classification: CPC C  B | IPC B  C

Claim 16:
17. A process for preparing the composition of claim 1, comprising:
i. a stage of melting the tackifying resin(s) (b), if appropriate as a mixture with one or more polymerization inhibitor(s) (c), at a temperature T3 ranging from 70° C. to 150° C.,
ii. a stage of incorporation and of mixing, under an inert atmosphere, of the polyurethane(s) (a),
iii. a stage of cooling the said mixture, to a temperature T4 ranging from 45° C. to 90° C., which is less than T3, then
iv. an optional stage of incorporation, in the said mixture, of the crosslinking radical photoinitiator(s) (d) and, if appropriate, of the other additive(s) (e) chosen from adhesion promoters, rheological agents, thixotropic agents, plasticizers, opacifying agents, pigments, dyes and fillers.