
Economical Unsaturated Resin Color Pastes
UR series is a cost-effective unsaturated resin colorant line designed for artificial stone, industrial-grade FRP, hand lay-up molding, BMC/DMC compounds, pultruded profiles and gel coat applications. The base resin contains zero plasticizers, ensuring excellent compatibility with unsaturated polyester systems with no risk of migration, exudation or surface bloom. With high pigment concentration, the recommended let-down ratio is only 1-2%, reducing usage cost while maintaining stable color. We offer 35 standard colors plus 150 stock base colors covering Pantone C/TPX and RAL color cards. UR series delivers reliable, consistent coloring performance at an economical price point for high-volume industrial applications.
Cost-Effective
Economical pricing for high-volume industrial FRP and artificial stone production
Plasticizer-Free
Base resin contains no plasticizers, eliminating migration and exudation risks
Excellent UP Compatibility
Perfect compatibility with unsaturated polyester resins, no curing interference
High Concentration
1-2% let-down ratio, low dosage cost, 35 standard colors + 150 stock colors
35 Standard Colors
Plasticizer-free base resin, 1-2% let-down ratio, excellent UP compatibility. Also available in 150 stock base colors matching Pantone C/TPX and RAL.
Whites & Blacks (4)

General White
Standard titanium white, economical, good hiding
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A White
Imported rutile titanium white, better whiteness
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General Black
Standard carbon black, economical universal black
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UP Extra Black
Higher jetness carbon black, deeper black shade
View Details & Inquire →Greys (5)

Light Grey
Code: B03
Light grey shade, good uniformity
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Medium Grey
Code: B02
Medium grey, standard industrial grey
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Dark Grey
Code: B01
Dark grey, high hiding
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Silver Grey
Code: B04
Silver-tone grey, bright appearance
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Greenish Grey
Code: BG01
Grey with green undertone, popular for profiles
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Art Green
Code: G02
Bright art green, good color strength
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Phthalo Green
Code: G01
Standard phthalocyanine green, economical
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Extra Bright Green
Code: G03
Extra bright green shade, vivid appearance
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Apple Green
Code: GY01
Fresh apple green, popular for decorative use
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Fruit Green
Code: GY08
Light fruit green, bright tone
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Grass Green
Code: GY04
Natural grass green, medium depth
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Olive Green
Code: G06
Muted olive green, industrial-grade
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Lake Green
Code: BG02
Blueish green, calm lake tone
View Details & Inquire →Yellows (5)

Cream Yellow
Code: Y12
Warm cream yellow, popular for artificial stone
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Light Yellow
Code: Y06
Pale light yellow, soft tone
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Butter Yellow
Code: Y03
Warm butter yellow, decorative shade
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Medium Chrome Yellow
Code: Y07
Standard chrome yellow, high hiding, economical
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Lemon Yellow
Code: Y05
Bright lemon yellow, vivid clean tone
View Details & Inquire →Reds (7)

Iron Oxide Red
Code: R01
Standard inorganic iron oxide red, economical
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Brilliant Red
Code: R03
Standard organic brilliant red, good chroma
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Bright Red
Code: R02
Bright red shade, vivid appearance
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China Red
Code: R00
Deep China red, popular high-demand color
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Magenta
Code: RP03
Blue-shade magenta, bright tone
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Rose Red
Code: RP03
Red-shade rose red, warm tone
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Date Red
Code: R04
Deep dark red, bordeaux shade
View Details & Inquire →Blues (4)

Royal Blue
Code: RAL500
Deep royal blue, rich tone
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Phthalo Blue
Code: B02
Standard phthalocyanine blue, economical universal
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Peacock Blue
Code: PB11
Bright peacock blue, greenish tone
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Dark Blue
Code: B01
Deep dark blue, high hiding
View Details & Inquire →Frequently Asked Questions
What is the difference between UR series and UP series?
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UR series is our economical line designed for high-volume applications like artificial stone, industrial FRP, hand lay-up and BMC/DMC, offering reliable performance at a competitive price. UP series is our premium line using high-performance imported pigments (BASF, Clariant, etc.) for high-end gel coats, architectural profiles and composites requiring superior weather resistance.
Why is plasticizer-free important?
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Plasticizers in color pastes can migrate to the surface over time, causing bloom, stickiness, reduced gloss, and interference with curing and bonding. Our UR series uses a plasticizer-free base resin that is fully compatible with unsaturated polyester, ensuring no migration, no exudation, and stable surface quality throughout the product lifecycle.
What is the recommended dosage?
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The standard let-down ratio is 1-2% by weight. UR series has high pigment concentration, so a small amount delivers consistent, uniform color. Adjust within 1-3% based on desired depth and opacity.
How many colors are available?
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We offer 35 standard colors in this catalog, plus 150 stock base colors covering Pantone C/TPX and RAL color cards. Custom color matching is also available for volume orders.
What applications and processes are suitable?
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UR series is designed for artificial quartz stone, industrial-grade FRP (fiberglass reinforced plastic), hand lay-up molding, BMC/DMC compounds, pultruded profiles and tubes, gel coat, and organic sheet/cast applications.
Does UR series affect curing of unsaturated polyester?
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No, the plasticizer-free base resin is fully compatible with unsaturated polyester systems and does not interfere with curing efficiency or mechanical properties. The colorant disperses evenly and maintains stability during processing.
Need a Quote for UR Series?
UR series offers reliable coloring at an economical price. Contact us for volume pricing and custom color matching. All inquiries will be replied within 24 hours.

