Polymer Additives

RDP — Redispersible Polymer Powder

RDP is a spray-dried polymer powder mainly based on vinyl acetate–ethylene (VAE). It redisperses in water to form a stable emulsion, improving flexibility, adhesion, and durability in cementitious mortars and coatings.

Enhances adhesion & flexural strength
Excellent water resistance & impact durability
Improves workability & weatherability
Widely used in tile adhesives, grouts & waterproof mortars
CAS No.: 24937-78-8 Solid Content: ≥ 98% Ash Content: 11% ±2 pH Value: 5.0 – 8.0 Package: 25 kg/bag
Redispersible Polymer Powder (RDP) sample

Core Specifications

RDP (Redispersible Polymer Powder) is mainly based on vinyl acetate–ethylene (VAE). Below are the typical specifications.

AppearanceWhite, free-flowing powder

Spray-dried polymer, easily redispersible in water.

Visual
CAS No.24937-78-8

Vinyl acetate–ethylene copolymer.

Reference ID
Solid Content≥ 98–99%

Determined by drying method.

Purity
Protective ColloidPolyvinyl Alcohol

Ensures redispersibility and storage stability.

Stabilizer
Ash Content11% ± 2%

Residue at 1000°C ignition.

QC index
Bulk Density400 – 550 g/L

Varies with grade and additives.

Physical property
pH (20℃)5.0 – 8.0

Measured in 50% aqueous solution.

Neutral range
MFT0 ℃

Minimum film-forming temperature.

Film forming
TG~ –11 ℃

Glass transition temperature.

Thermal property
RDP in tile adhesives and grouts

Tile Adhesive & Grouts

Enhances adhesion, flexibility, and impact resistance in cement-based tile adhesives and grout mortars.

RDP in waterproof mortars

Waterproof Mortars

Improves water resistance, durability, and weatherability in waterproofing formulations.

RDP in flexible putty and wall coatings

Flexible Putty & Coatings

Used in wall putty and decorative coatings for flexibility, smooth finish, and crack resistance.

Trusted Supply • Easy Contact

All RDP products are from certified partner factories with COA per batch. Focus on your project — we take care of compliance and logistics. Reach out anytime for fast support.

Why Work With Us?

Certified partner factories • COA with every batch • Flexible shipping • Responsive support

FAQ

What is the MOQ and lead time?

MOQ is 1 ton. Typical lead time is 7–15 days depending on stock and port schedule.

Do you provide certificates and testing?

Each batch is supplied with a COA (Certificate of Analysis). Additional documents such as MSDS, TDS or other compliance certificates can be provided when available. For special requests, third-party inspection or testing can be arranged, with the inspection fee borne by the buyer.

Which payment terms do you accept?

T/T, L/C, and flexible options for long-term clients. Please confirm details during inquiry.