Grand Chemical / OBA Chemical

About Grand Chemical / OBA Chemical.

Shandong Grand Chemical Co., Ltd. (operating obachemical.com) is a Chinese **leading manufacturer of optical brightener and fluorescent whitening agent** — 'leading manufacturer of optical brightener in China, serving plastic paints textiles, and detergent industries'. **Address**: No. 59, South Gongye Road, Jinan, Shandong, China. **Contact**: Email [email protected] / [email protected] / WhatsApp +86 13173009832. **Experience**: 'over ten years of experience'. **Self-positioning**: 'high-technology company specializing in the manufacturing and exporting of optical brighteners for industries of **plastics, rubber, textile, detergent, coatings inks**, etc.'. **Mission**: 'to be the leading national supplier and manufacturer in the field of optical brighteners'. **Application industries**: **plastics + rubber + textiles + detergent + coatings + inks + paints + paper + adhesives + blown film + polypropylene (PP) + polyester + nylon + ABS + PS + HIPS + PA + PC + EVA + rigid PVC + polyester resin + polyester fiber + cotton + linen + cellulose fabrics + wool + bleaching + paint coatings + acrylic + epoxy systems + hot-melt glues + industrial adhesives**. **Comprehensive product portfolio**: **Optical Brightener OB-1 (FBA 393 / Uvitex OB-1 / Eastobrite OB-1)** — for plastics + polyester + nylon + PP + ABS + PS + HIPS + PA + PC + EVA + rigid PVC — heat-resistant 375-400°C — 25KG fiber drum; **Optical Brightener OB** — for blown film + adhesives + plastics; **Optical Brightener BBU (OBA 220 / FB 220 / Leucophor U / Blankophor BBU / Blancofor BBU / C.I. Fluorescent Brightener 220 / 16470-24-9)** — for cotton + paper pulp + surface sizing + coating; **Optical Brightener BA-L (OBA 113 / FB 113 / Blankophor BA — anionic)** — for cotton + paper pulp + linen + cellulose + cellulose fabrics + synthetic detergent — acid + alkali resistant; **Optical Brightener BA (OBA 113 / FB 113)** — for paint coatings + inks + paper pulp; **Optical Brightener DT (C.I. 135)** — for polyester non-ionic + heat treatment requiring; plus full Optical Brighteners line for cotton + paper + paints/coatings/inks + plastics. **Production specs**: BBU/BA-L liquid grade — Density 1.0-1.3 g/cm³, Viscosity ≤50 mPa.s @ 25°C, packaging 200KG/250KG plastic drums + 1000KG IBC tank, 6-month shelf life. OB-1 — Yellowish green crystal powder, 98.50% purity, 355-360°C melting point, 25KG fiber drum (double-layer plastic bag). **Industry knowledge**: Author of comprehensive industry guides covering Factors Affecting OBA Performance in Textiles + OBA for PP (Polypropylene) + OBA for Blown Film + OBA for Adhesives + Sodium thiosulfate post-treatment + Coumarin-based OBAs. **Industry context**: Optical brighteners (OBAs/FWAs) are fluorescent compounds that absorb UV light and emit blue-violet fluorescence to neutralize yellow tones — essential for whiteness enhancement in plastics, paper, textiles, detergents, coatings. Major Chinese OBA peer: Oriental Chemicals (orientalchemicals.com — 16 years — OBA + UV absorbers + masterbatches).

Applications: Plastics Industry (PP + Polyester + Nylon + ABS + PS + HIPS + PA + PC + EVA + Rigid PVC), Plastics Recycling Industry (Recycled Polymer Blends with Virgin), Blown Film Industry, Polypropylene Manufacturers, Polyester Resin + Fiber Manufacturers, Nylon Fiber Manufacturers, Textile Industry (Cotton + Linen + Cellulose + Wool Whitening), Paper Industry (Paper Pulp + Surface Sizing + Coating), Detergent + Soap Industry (Synthetic Detergents + Liquid Detergents + Powder Detergents), Coatings + Paints Industry (Architectural + Industrial), Inks Industry (Printing Inks), Adhesives Industry (Industrial Adhesives + Hot-Melt Glues + Pressure-Sensitive), UV Detection Inspection Industry (Packaging + Electronics + Automotive Assembly QC), Distributors + Wholesalers of Specialty Chemicals, Trade Show Buyers (K Show + Chinaplas + ECS + Adhesives Europe + COATING India)