US 12,378,440 B2
Process for hot application of a silylated adhesive composition
Jean-Francois Chartrel, Cuts (FR); Olivier Laferte, Trosly Breuil (FR); and Lahoussaine Lalouch, Noyon (FR)
Assigned to BOSTIK SA, Colombes (FR)
Filed by BOSTIK SA, Colombes (FR)
Filed on Oct. 13, 2021, as Appl. No. 17/500,484.
Application 17/500,484 is a continuation of application No. 14/574,555, filed on Dec. 18, 2014, granted, now 11,174,416.
Claims priority of application No. 13/63079 (FR), filed on Dec. 19, 2013.
Prior Publication US 2022/0033685 A1, Feb. 3, 2022
Int. Cl. C09J 5/06 (2006.01); B01F 25/313 (2022.01); B01F 25/431 (2022.01); B01F 35/90 (2022.01); B01F 35/95 (2022.01); B01F 101/36 (2022.01); B05C 11/10 (2006.01); B05D 1/26 (2006.01); B05D 1/34 (2006.01); B05D 5/10 (2006.01); C08G 18/83 (2006.01); C08G 65/336 (2006.01); C09J 175/04 (2006.01); B05C 5/02 (2006.01)
CPC C09J 5/06 (2013.01) [B01F 25/3131 (2022.01); B01F 25/43161 (2022.01); B01F 35/95 (2022.01); B05D 5/10 (2013.01); C08G 18/837 (2013.01); C08G 65/336 (2013.01); C09J 175/04 (2013.01); B01F 25/431972 (2022.01); B01F 2035/99 (2022.01); B01F 2101/36 (2022.01); B05C 5/0254 (2013.01); B05C 11/1042 (2013.01); B05D 1/26 (2013.01); B05D 1/34 (2013.01); B05D 2252/02 (2013.01); C09J 2475/00 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A process for hot application of an adhesive composition on a support comprising employing a hot application system comprising:
an application nozzle applying the adhesive composition,
a supply line supplying the application nozzle with the adhesive composition to be applied in fluid form,
a dynamic mixer positioned in the supply line homogeneously mixing main components of the adhesive composition before its application;
the applied adhesive composition including as main components:
from 20% to 85% by weight of silylated pre-polymer,
from 15 to 80% by weight of compatible tackifying resin;
the adhesive composition further comprising from 0.01 to 3% by weight of cross-linking catalyst;
the process comprising:
supplying the supply line with said at least silylated prepolymer, separate from the cross-linking catalyst,
injecting the cross-linking catalyst into the at least silylated prepolymer at the mixer;
mixing the cross-linking catalyst with the main components in the mixer,
applying the mixed adhesive composition on a support by the application nozzle at a temperature comprised between 50° C. and 140° C.,
wherein the conversion rate of the cross-linking reaction for the adhesive composition in the hot application system is less than or equal to 30%, and
wherein the silylated pre-polymer is heated upstream from its mixing point with the cross-linking catalyst in the mixer.