US 12,168,341 B2
Ionomer interlayer with enhanced adhesion properties
Charles Anthony Smith, Vienna, WV (US)
Assigned to KURARAY AMERICA, INC., Houston, TX (US)
Filed by KURARAY AMERICA, INC., Houston, TX (US)
Filed on Apr. 25, 2023, as Appl. No. 18/306,297.
Application 18/306,297 is a continuation of application No. 16/050,728, filed on Jul. 31, 2018, granted, now 11,673,381.
Claims priority of provisional application 62/539,077, filed on Jul. 31, 2017.
Prior Publication US 2023/0271409 A1, Aug. 31, 2023
Int. Cl. C08L 23/08 (2006.01); B32B 7/12 (2006.01); B32B 17/10 (2006.01); B32B 27/32 (2006.01); B32B 27/36 (2006.01); C08J 3/22 (2006.01); C08K 5/544 (2006.01)
CPC B32B 27/36 (2013.01) [B32B 7/12 (2013.01); B32B 17/10036 (2013.01); B32B 17/1055 (2013.01); B32B 27/32 (2013.01); C08J 3/226 (2013.01); C08K 5/544 (2013.01); C08L 23/0876 (2013.01); C08J 2323/08 (2013.01)] 16 Claims
 
1. A resin composition comprising an intimate mixture of (i) an ionomer resin and (ii) an adhesion promotor additive, wherein:
(a) the ionomer resin is a sodium-neutralized ethylene·α,β-unsaturated carboxylic acid copolymer, wherein the sodium-neutralized ethylene·α,β-unsaturated carboxylic acid copolymer comprises constituent units derived from ethylene and constituent units derived from an α,β-unsaturated carboxylic acid, in which at least a part of the constituent units derived from the α,β-unsaturated carboxylic acid are neutralized with a counterion, and wherein the counterion consists essentially of sodium cations;
(b) the adhesion promotor additive is a glycidyldialkoxysilane compound; and
(c) the glycidyldialkoxysilane compound is present in the resin composition in an amount ranging from about 50 to about 250 parts per million by weight based on the weight of the ionomer resin;
wherein
a content of the α,β-unsaturated carboxylic acid in the ionomer resin is from 2 to 30% by mass, and
a degree of neutralization of the α,β-unsaturated carboxylic acid in the ionomer resin is from 10 to 60%.