DECRIPTION:
RoadChem™ 201® is a cationic emulsifier for the manufacture of asphalt emulsions for microsurfacing where very rapid break is required due to cooler weather or un-reactive systems.
RoadChem™ 201® may be used with a range of different polymer modification including Neoprene, SBR, EVA, EMA and SBS.

BENEFITS:

• Stablility
• Easy to handle and transport
• Excellent adhesion and cohesion
• Wide range of compatibility with aggregates
• Easily neutralized with hydrochloric acid (concentrated)

PHYSICAL PROPERTIES:
Pour Point: (C) 12C
Flash Point (Closed Cup): (C) >200 Appearance: Liquid
SG: 25C 0.93 kg/It
Viscosity, cps 25C: > 1000
Boiling Point (C): > 100
Actives: 100%

Storage Life: Min 12 months in drums or bulk(30-50C in covered area in sealed drums).

APPLICATION:
It is good practice to acidify the water before addition of RoadChem™ 201®. RoadChem™ 201® should be kept at 30C or higher prior to use for pumping. It should not be stored at above 60C.

TYPICAL FORMULATION:
All formulations should be tested in the laboratory before use.

Microsurfacing
Asphalt: 62-63%
Soap (Based on total emulsion by weight)
RoadChem™ 201®: 1.2-1.5%
Concentrated HCl (pure): To pH1.2-2.3
Latex: 3-4% (of 60% solids)
Water: To 100%

NOTES:
Note that RoadChem™ 201® should be added to warm water that has already had the acid added to it. The emulsifier buffers the solution so mix for at least 20 minutes before testing pH.

Note also that slurry and microsurfacing emulsions must be designed relatively to the mixture. That is a full ISSA mixture design must be done to verify performance.

Notes:
1. RoadChem™ 201® may be blended with RoadChem™ 300®, RoadChem™ 200® or RoadChem™ 301® to improve adhesion and extend mixing times of RoadChem™ 201® microsurfacing emulsions.
2. RoadChem™ 201® may be used with a wide range of retarders including aluminum sulfate, ammonium chloride, JP4, borax, and may be used in the prewet water in a neutralized solution of 5% as a retarder.
3. RoadChem™ 201® has a high viscosity at low temperatures, store at 30-50C.
4. RoadChem™ 201® neutralizes easily, and the ratio of HCI: RoadChem™ 201® to achieve required pH is about 0.3.
5. Prolonged exposure of RoadChem™ 201® to moisture or carbon dioxide will reduce its activity. As far as possible use only full drums.
6. Latex should be co-milled into the emulsion for the best dispersion, emulsion stability and control of the final properties of the microsurfacing. Latex may be post added or added into the soap if no co-milling is not available.
7. In properly formulated system RoadChem™ 201® can allow application of microsurfacing at ambient temperatures of 6C (and rising).
8. RoadChem™ 201® may be used as an accelerating additive for slurry emulsions or microsurfacing systems based on other RoadChem™ emulsifiers. It is added in as a part of the emulsifier system.

SAFETY
Contains alkaline corrosive materials. Will cam eye and skin irritation if significant contact is made. Use goggles, gloves and protective clothing when handling. Refer to the MSDS for further information.

Valley Slurry Seal Company, PO Box 981330, West Sacramento, CA 95798, USA.
Phone (916) 373-1500 Fax: (916) 373-1438 Email: vss@slurry.com

Information given herein is given in good faith, without warranty, representation or inducement or license of any kind. VSS does not assume any legal responsibility for reliance upon same. VSS is not responsible for materials not manufactured by VSS that may represent hazards in handling or use nor for the safety of any process employing any VSS product. No representation is given as to freedom from patent restriction.

RK/August 5, 1998