	US 12,351,710 B2
	Method for preparing polyvinyl butyral resin composition, and glass-adhesive film comprising same
Hyejin Kim, Suwon-si (KR); Jooyoung Jung, Pyeongtaek-si (KR); Jiyeon Ryu, Suwon-si (KR); and Jewon Yeon, Suwon-si (KR)
Assigned to SK microworks Co., Ltd., Suwon-si (KR)
Filed by SK microworks Co., Ltd., Suwon-si (KR)
Filed on Jan. 4, 2021, as Appl. No. 17/140,504.
Application 17/140,504 is a continuation of application No. PCT/KR2019/002701, filed on Mar. 8, 2019.
Claims priority of application No. 10-2018-0095766 (KR), filed on Aug. 16, 2018.
Prior Publication US 2021/0130599 A1, May 6, 2021
Int. Cl. C08L 29/14 (2006.01); B32B 17/10 (2006.01); C08K 5/092 (2006.01)

CPC C08L 29/14 (2013.01) [B32B 17/10036 (2013.01); B32B 17/10605 (2013.01); B32B 17/10761 (2013.01); C08K 5/092 (2013.01); B32B 2250/03 (2013.01); B32B 2250/40 (2013.01); B32B 2307/412 (2013.01); B32B 2329/06 (2013.01); B32B 2605/006 (2013.01); B32B 2605/08 (2013.01); C08L 2203/16 (2013.01)]

6 Claims

1. A method of producing a polyvinyl butyral resin comprising:

a reaction step of reacting i) a polyvinyl alcohol resin, ii) a butanal, and iii) a hydroxy butyric acid, thereby producing a polyvinyl butyral resin composition of which butyral conversion rate is 77% or more.