Cure-system inertness
Silicone, PU and acrylic sealants cure by different chemistries, so pigments must not react with catalysts or interfere with crosslinking and adhesion.
Applications
Pigments for Adhesives & Sealants
Pigment recommendations for adhesives & sealants with technical checks and export enquiry support.
Colored adhesives and sealants span silicone, polyurethane, acrylic and hot-melt chemistries, so pigments must be inert toward reactive cure systems, moisture-stable, and non-bleeding where the bead sits against paint or substrate. Source From India supplies grades and pastes matched to each polymer platform for identification, aesthetics and coding. Buyers should confirm chemical inertness toward the specific cure mechanism, non-migration so sealant color does not stain adjacent surfaces, heat stability for hot-melt processing, and dispersion without affecting rheology, tack or adhesion. Consistent color coding across batches supports quality control and product differentiation for industrial buyers.
At a glance
What Pigments for Adhesives & Sealants covers
Non-staining beads
Sealant beads contact paint and stone, so non-migrating pigments prevent color bleed and staining of adjacent porous substrates over time.
Hot-melt heat stability
Hot-melt adhesives apply molten, so pigments must resist thermal shade shift during processing and repeated remelting without darkening.
Rheology-neutral dispersion
Pigments and pastes must disperse without disturbing tack, viscosity or adhesion, preserving the sealant's application and bonding performance.
Recommended pigments
High-demand grades to consider
A starting shortlist of export-grade organic pigments relevant to Pigments for Adhesives & Sealants. Open any grade for shade, fastness and packing detail, or send your requirement for a matched recommendation.
Red Pigments
Pigment Red 146
PR146Naphthol red with balanced brightness and industrial usability.
View export grade Pigment PastesPolyester Pigment Paste
Polyester PasteDispersion paste designed for polyester resin coloration.
View export grade Green PigmentsPhthalocyanine Green 7
Pigment Green 7Chlorinated phthalocyanine green for durable industrial coloration.
View export grade Yellow PigmentsPigment Yellow 138
PY138High-performance yellow for demanding coating and plastic requirements.
View export grade Orange PigmentsPigment Orange 13
PO13Diarylide orange used for inks, textiles, and industrial colorants.
View export gradeExplore more
Related pages & export hub
Answers
Pigments for Adhesives & Sealants — frequently asked questions
Which pigments suit silicone and PU sealants?
Cure chemistry drives the choice: silicone and polyurethane use catalysts and reactive groups that some pigments disturb. We supply inert, moisture-stable grades and pastes matched to each platform, so color does not inhibit cure, shift shade or weaken the bond in the finished sealant bead.
Can sealant pigments stain adjacent surfaces?
Poorly chosen grades can migrate and stain paint, stone or plaster next to the bead. We select non-bleeding, low-migration pigments so a colored sealant stays contained, protecting surrounding finishes, which matters especially for construction and sanitary joints against porous substrates.
Do hot-melt adhesives need special pigments?
Yes. Hot-melts apply molten and may be remelted, so pigments must be heat-stable to resist darkening and shade drift at processing temperature. We recommend grades validated for the melt temperature of your hot-melt system so color stays consistent through application.
Will pigment affect adhesion or cure speed?
It can if the grade is reactive or poorly dispersed. We supply rheology-neutral, inert pigments and pastes that color without slowing cure, reducing tack or weakening bond strength, so buyers get identification and aesthetics without compromising the adhesive's core performance.
Buyer knowledge base
Pigments for Adhesives & Sealants: a quick sourcing guide
The practical side of pigment sourcing: matching chemistry to end use, confirming fastness, and getting samples and documents ready for a fast decision.
Dispersion support
Guidance on oil absorption and let-down, plus ready-to-use pastes where direct handling helps.
Shade matching
Target a physical standard or current reference; the lab confirms undertone and tinting strength.
Migration control
For plasticised and polyolefin systems, grades are chosen to resist blooming and plate-out.
Compliance on file
REACH and RoHS declarations and correct HS codes prepared for your market's customs.