Our PMMA Light Diffusing Agent is premium ultrafine white powder optical additive. With consistent micro particle size, it evenly scatters light without obvious loss of transmittance, solving glare issues for optical plastic products.
This PMMA diffuser powder perfectly matches PC, PS, PP and PMMA substrates, ideal raw material for LED lampshades, light guide panels, frosted cosmetic bottles and household plastic parts. We support customized particle sizes and provide COA, TDS for all batches,

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Product Detail

Our PMMA Light Diffusing Agent is a high-performance organic optical diffuser powder, manufactured from pure polymethyl methacrylate raw material. It appears as superfine pure white uniform powder with flexible particle size ranging from 1 μm to 30 μm. Different from traditional inorganic diffuser fillers, our PMMA-based diffuser features a refractive index highly matched with various transparent plastics, which enables excellent light scattering effect while maintaining high light transmittance. The product effectively converts sharp point light sources into soft and uniform surface light, completely eliminates bright spots, glare and light concentration problems, ensuring smooth and comfortable light output for all optical plastic finished products.

With narrow particle size distribution and good surface activity, this ultrafine white diffusing powder shows outstanding dispersion performance during plastic blending and molding processes. It will not agglomerate, precipitate or cause fish eyes, white marks and surface scratches on finished products. The material maintains stable physical and optical properties under normal plastic processing temperature below 240°C, with no yellowing, no decomposition and no light attenuation after long-term use. Completely non-toxic, odorless and heavy-metal-free, the powder meets industrial and cosmetic safety standards, supporting wide-range application in high-grade transparent plastic modification.

The adjustable particle size from 1 μm to 30 μm covers all mainstream market demands for light diffusion and frosted matte effect. Fine particle powder between 1 μm and 10 μm provides delicate and uniform frosted texture for cosmetic packaging materials, creating high-grade semi-transparent matte appearance without reducing overall light transmittance. Medium particle size from 10 μm to 20 μm perfectly balances haze and transparency, widely used for thin LED diffuser sheets, flat panel lights and indoor lighting panels to achieve even light mixing. Larger particle size ranging from 20 μm to 30 μm offers stronger light scattering capacity, ideal for thick diffuser plates, large LED lampshades and outdoor lighting covers to completely cover lamp bead shadows and bright points.

This PMMA light diffusing additive has excellent compatibility with PC, PS, PP, PET and original PMMA resins. It can be directly mixed with plastic particles without extra dispersants or auxiliary agents, adapting to injection molding, extrusion, blow molding and other thermoplastic processing methods. Suitable for mass industrial production and small-batch trial production, the powder always keeps stable diffusion performance and consistent batch quality. Compared with inorganic barium sulfate and silica diffusers, our organic PMMA diffuser greatly reduces light loss, improves overall luminance uniformity and enhances the grade and texture of optical plastic products.

Widely applied in multiple industries, our PMMA light diffusing powder has become a preferred optical filler for lighting and cosmetic plastic manufacturers. In the LED lighting industry, it is commonly used for LED diffuser plates, downlight covers, panel lamp shells, light guide films and automotive interior light covers to solve uneven lighting and dazzling glare problems. In cosmetic packaging industry, the 1–10 μm fine powder replaces traditional chemical frosting technology, realizing uniform frosted matte surface on plastic bottles, pump covers and cosmetic tubes with safer and more environmentally friendly performance. It is also extensively used in transparent household plastic parts, optical instrument shells, display backlight panels and indoor decorative light-transmitting boards.

The recommended addition ratio varies according to different application scenarios and required haze degree. For cosmetic frosted plastic products, the dosage is usually controlled between 1% to 5% for exquisite matte effect. For thin LED diffuser sheets and flat lighting panels, the conventional addition range is 3% to 8% to balance transparency and light diffusion. For thick diffusion plates and large lampshade products, the dosage can be adjusted from 8% to 15% to achieve full light homogenization and zero bright spots. We provide professional formula guidance according to customers’ product requirements and support customized particle size screening within the 1–30 μm range.

Packed with 25kg standard kraft paper bags with inner plastic lining for stable storage and moisture-proof protection, our products guarantee long-term performance stability for 12 months under dry and cool warehouse conditions. We also support small trial packaging for customer sample testing. All batches are supplied with complete COA and TDS technical documents, and free product samples are available for clients to verify quality and effect before bulk order. As a professional factory supplier, we focus on stable quality, adjustable particle specification, stable delivery and one-stop technical support for global optical plastic modification customers.

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PMMA Light Diffusing Agent Powder | Optical Diffusion Additive For LED Diffuser Plate & Cosmetic Packaging

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Jishengya Technology

Shenzhen Jishengya Technology Co., Ltd. is located in Shenzhen, a special economic zone, and is a comprehensive technology enterprise integrating independent R&D, production and sales.