	US 12,139,632 B2
	Roadway surface compositions and pelletized binder materials thereof
Peter Uthe, Savannah, GA (US); David Broere, Almere (NL); Adam Fasula, Jacksonville, FL (US); Brett Neumann, Savannah, GA (US); and Martine Dupont, Louvain-la-Neuve (BE)
Assigned to KRATON CORPORATION, Houston, TX (US)
Filed by Kraton Polymers LLC, Houston, TX (US)
Filed on Oct. 11, 2021, as Appl. No. 17/450,501.
Claims priority of provisional application 63/198,344, filed on Oct. 12, 2020.
Prior Publication US 2022/0112394 A1, Apr. 14, 2022
Int. Cl. C09D 153/02 (2006.01); C09D 5/33 (2006.01); C09D 7/65 (2018.01)

CPC C09D 153/025 (2013.01) [C09D 5/004 (2013.01); C09D 7/65 (2018.01)]

20 Claims

1. A road surface composition comprising:

0.1-3.9 wt. % of a styrenic block copolymer (SBC), the SBC has a total polystyrene content of 40-60 wt. %,

wherein the SBC has a general formula configuration selected from at least one of A-B-A, (A-B)_nX, (A-B-A)_nX, and (A₁-B)_dX-_e(B-A₂), where X is a residue of a coupling agent and n is 2-30, d is 1-30, and e is 1-30;

wherein block A, A₁, A₂is selected from an unhydrogenated or hydrogenated mono alkenyl arene polymer block having a peak number average molecular weight of 3,000-60,000 g/mol;

wherein block B is a rubber block having a peak number average molecular weight of 20,000-300,000 g/mol, comprising polymerized units derived from at least one of the following:

isoprene or isoprene/butadiene, and

a partially hydrogenated or fully hydrogenated copolymer block of at least one conjugated diene and at least one mono alkenyl arene;

1-30 wt. % of a tackifier resin selected from hydrocarbon resins, rosin resins, rosin esters, alkyd resins, and combinations thereof;

1-15 wt. % of pigments;

25-50 wt. % of glass beads;

0.05-60 wt. % of fillers/aggregates;

anti-skid media in an amount of up to 85 wt. %;

waxes in an amount of up to 10 wt. %;

elastomer/plastomer component in an amount of up to 30 wt. %; and

plasticizers in an amount of up to 15 wt. %; and

wherein the road composition is applied directly onto a road way.