US 12,305,039 B2
Asphalt modifier and asphalt composition comprising same
Taejung Kim, Daejeon (KR); Chunhwa Lee, Daejeon (KR); and Hye Rim Lee, Daejeon (KR)
Assigned to LG Chem, Ltd., Seoul (KR)
Filed by LG Chem, Ltd., Seoul (KR)
Filed on Nov. 6, 2020, as Appl. No. 17/091,628.
Application 17/091,628 is a division of application No. 16/076,146, abandoned, previously published as PCT/KR2017/007441, filed on Jul. 12, 2017.
Claims priority of application No. 10-2016-0137678 (KR), filed on Oct. 21, 2016.
Prior Publication US 2021/0054209 A1, Feb. 25, 2021
Int. Cl. C08L 95/00 (2006.01); C08F 297/04 (2006.01); C08K 5/06 (2006.01); C08L 53/02 (2006.01)
CPC C08L 95/00 (2013.01) [C08F 297/044 (2013.01); C08K 5/06 (2013.01); C08L 53/025 (2013.01); C08L 2312/00 (2013.01); C08L 2555/84 (2013.01)] 6 Claims
 
1. An asphalt composition comprising asphalt, a cross-linking agent, and an asphalt modifier,
wherein the asphalt modifier comprises a main chain derived from styrene-butadiene-styrene block copolymer, and a multifunctional group bound to an end of the main chain, wherein the multifunctional group is represented by any one of the following structures:

OG Complex Work Unit Chemistry
wherein * is a moiety that is bound to the end of the main chain, and
the asphalt modifier is included in an amount of 1.0 to 4.7 parts by weight, based on 100 parts by weight of the asphalt composition.