US 11,674,035 B2
Epoxy-functionalized novolak resin composition
Gael Pataut, Clermont-Ferrand (FR); Thibault Derouineau, Clermont-Ferrand (FR); Laura Luiz, Cierp-Gaud (FR); and David Doisneau, Clermont-Ferrand (FR)
Assigned to COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN, Clermont-Ferrand (FR)
Appl. No. 16/956,961
Filed by COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN, Clermont-Ferrand (FR)
PCT Filed Dec. 7, 2018, PCT No. PCT/FR2018/053150
§ 371(c)(1), (2) Date Jun. 22, 2020,
PCT Pub. No. WO2019/122575, PCT Pub. Date Jun. 27, 2019.
Claims priority of application No. 1762991 (FR), filed on Dec. 22, 2017.
Prior Publication US 2020/0392328 A1, Dec. 17, 2020
Int. Cl. C08L 63/04 (2006.01); B60C 9/00 (2006.01); B60C 9/18 (2006.01); C08G 59/08 (2006.01); C08G 59/50 (2006.01); C08G 59/62 (2006.01)
CPC C08L 63/04 (2013.01) [B60C 9/005 (2013.01); B60C 9/1807 (2013.01); C08G 59/08 (2013.01); C08G 59/50 (2013.01); C08G 59/621 (2013.01); C08L 2205/02 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A resin composition of epoxide-functionalized resins comprising at least:
a first epoxide-functionalized novolac resin based on:
at least one first aromatic polyphenol comprising at least one aromatic nucleus bearing at least two hydroxyl functions in the meta position relative to one another, the two positions ortho to at least one of the hydroxyl functions being unsubstituted, and
a first compound comprising at least one aldehyde function;
a second epoxide-functionalized novolac resin based on:
at least one second aromatic polyphenol comprising at least one aromatic nucleus bearing at least one alkyl radical and at least two hydroxyl functions in the meta position relative to one another, the two positions ortho to at least one of the hydroxyl functions being unsubstituted, and
a second compound comprising at least one aldehyde function; and
a curing agent selected from the group consisting of phenolic curing agents and amine curing agents,
wherein, for all the epoxidized novolac resins in the resin composition, an average molar mass is between 550 and 650 g/mol and an average epoxide functionality is between 3 and 3.5 eq epoxide/mol, and
wherein the resin composition has a glass transition temperature Tg of at least 160° C.