UCAR™ Latex DT250T - Mielco

UCAR Latex DT250T
STYRENE-ACRYLIC EMULSION FOR WATERBORNE TRAFFIC PAINT
UCAR Latex DT250T is a styrene-acrylic emulsion designed specifically for use in waterborne
traffic marking paints, especially when application occurs under marginal conditions of
temperature, humidity and air flow. Commercial applications and road trials have proven that
traffic marking paints formulated with UCAR Latex DT250T are significantly faster drying in
high humidity, low temperatures and poor air flow conditions, compared to conventional water
based traffic paints.
Characteristics of the Product:
• Benefits compared to solvent-borne
traffic paints:
Environmentally friendly
- Reduced disposal cost
- Easy clean-up
- Increased worker safety
- Longer retention of glass beads giving
extended retroreflectivity / night time
visibility
• Benefits compared to conventional
waterborne traffic paints:
Extended marking season
- Excellent early wash-out resistance
- Reduced dirt pick up
- Better paint stability
Typical Physical Properties
Appearance Milky, white liquid
Solids Content % 49.5-51.5
pH 10.2-10.9
Viscosity at 25°C
300 max. mPa.s
(Brookfield spindle n°2, 60 rpm)
Specific gravity (g/cm 3 ) 1.03 g/cm 3
Tg (Deg C Onset/Midpoint) 19/24
Minimum Film Formation Temperature (Deg C) 18-20
*The physical property data listed are considered to be typical properties, not product specification

UCAR Latex DT250T
STYRENE-ACRYLIC EMULSION FOR WATERBORNE TRAFFIC PAINT
Formulating Guidelines
Formulating waterborne traffic paints based on UCAR Latex DT250T is similar to
formulating other common types of latex paints. No unusual techniques or equipment are
required. However, as a result of the very fast drying characteristics of UCAR Latex DT250T,
traffic paint manufacturers must adopt the following guidelines when formulating paints:
1. pH:
Maintain a pH of 10.2 or above at all times during the manufacture and storage of paints based
on UCAR Latex DT250T.
2. Neutralising Agent
Use only ammonia to adjust the pH of the paint. Do not use less volatile amines or nonvolatile
base.
3. Grinding:
Avoid excessive heating of the paint during manufacture. It is strongly recommended not to
"grind" (disperse) at high speed (

UCAR Latex DT250T
STYRENE-ACRYLIC EMULSION FOR WATERBORNE TRAFFIC PAINT
9. Wetting Agent:
A surfactant is needed to facilitate wetting of the pigment particle surfaces. Triton X-405 has
been found to be especially effective in reducing high viscosity.
10. Defoamer:
Excessive foam in the paint will increase the apparent viscosity and lead to problems with gel
formation. Drewplus T-4201 is an example of an effective defoamer in this system.
Alternatives should be evaluated for specific paint properties. It is important to carefully
evaluate silicone based defoamers, as they may adversely affect the adhesion of the paint to
the reflective glass beads.
11. Rheology Modifiers:
Although traffic marking paints based on UCAR Latex DT250T are less prone to pigment
settling than conventional latex paints, a low level of rheology modifier can help to reduce
pigment settling. Natrosol HBR 250 is recommended as it gives some structure to the paint,
without negative effect on sprayability.
12. Alcohol:
Alcohols can be optionally added to paints based on UCAR Latex DT250T to impart freezethaw
stability and to optimise "dry-to-no-pick-up" times. Care in method of alcohol addition is
recommended as the alcohol may promote gel/particulate formation in the paint.
13. Coalescents:
Waterborne traffic marking paints based on UCAR Latex DT250T require the addition of
coalescing solvents to obtain good film formation, particula rly at l ower ap plicat i on
temperatures. We recommend 10% Texanol, calculated on polymer solids, to coalesce
traffic marking paints based on UCAR Latex DT250T down to 5°C. Lower levels may
compromise performance and durability, especially if the paints are applied at low road
surface temperatures.
Note these suggestions and data are based on information we believe to be reliable. They are offered in good
faith but without guarantee as conditions and methods of use of our products are beyond our control. We
recommend that the prospective user determines the suitability of our materials and suggestions before
adopting them on commercial scale.

UCAR Latex DT250T
STYRENE-ACRYLIC EMULSION FOR WATERBORNE TRAFFIC PAINT
Raw Materials
UCAR Latex DT 250T Trademark of The Dow Chemical Company
Drewplus T-4201 Trademark of Drew Ameroid Deutschland GmbH
Hydropalat A Trademark of Cognis Deutschland GmbH & Co. KG
Dispex A40 Trademark of Ciba Specialty Chemicals
Ti-Pure R-900 Trademark of E.I. du Pont de Nemours and Company
Omyacarb 5 Trademark of Omya AG
Texanol Trademark of Eastman Chemical Company
Natrosol HBR 250 Trademark of Aqualon-Hercules Inc.
Versenol 120 Trademark of The Dow Chemical Company
NOTICE: No freedom from any patent owned by Seller or others is to be inferred. Because use conditions and applicable
laws may differ from one location to another and may change with time, Customer is responsible for determining whether
products and the information in this document are appropriate for Customer's use and for ensuring that Customer's
workplace and disposal practices are in compliance with applicable laws and other governmental enactments. Seller assumes
no obligation or liability for the information in this document. NO WARRANTIES ARE GIVEN; ALL IMPLIED WARRANTIES
OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE ARE EXPRESSLY EXCLUDED.
Trademark of The Dow Chemical Company