Guangzhou Eric Wei Chemical Co., Ltd.
Guangzhou Eric Wei Chemical Co., Ltd.

Rohm and Haas PARALOID A-21 Acrylic Resin

Rohm and Haas PARALOID A-21 is a solvent-based acrylic resin designed for high-gloss, durable coatings and inks. It offers excellent clarity, UV resistance, and adhesion to diverse substrates including plastics and metals. Widely used in automotive refinishes and industrial finishes, it delivers superior flow, leveling, and chemical resistance while maintaining flexibility and hardness balance.
  • rohm and haas paraloid a 21 acrylic resin_c066b03c
  • rohm and haas paraloid a 21 acrylic resin_c066b03c

Features Of Rohm and Haas PARALOID A-21 Acrylic Resin

  1. High molecular weight acrylic copolymer delivering excellent film-forming properties and mechanical strength.

  2. Good compatibility with nitrocellulose, CAB, and other common film formers used in protective and decorative coatings.

  3. Provides outstanding gloss retention, clarity, and UV resistance in clear coat systems.

  4. Enables low-viscosity formulations while maintaining robust resin backbone integrity and solvent release control.

  5. Offers balanced hardness and flexibility for improved scratch and mar resistance in topcoat applications.

Typical Applications Of Rohm and Haas PARALOID A-21 Acrylic Resin

  1. Automotive clearcoats and refinish topcoats requiring high-gloss, durability, and weatherability.

  2. Industrial maintenance coatings for metal substrates exposed to outdoor environments.

  3. Wood furniture and cabinetry finishes where clarity, flow, and sandability are critical.

  4. Plastic coatings for automotive interior trim and consumer electronics housings.

  5. General-purpose solvent-borne architectural and OEM coatings requiring rapid drying and film integrity.

Specifications Of Rohm and Haas PARALOID A-21 Acrylic Resin

Chemical TypeAcrylic copolymer (methyl methacrylate / butyl acrylate / methacrylic acid)
Product FormSolvent-borne resin solution
AppearanceClear, colorless to pale yellow liquid
Solvent SystemButyl acetate / xylene blend
Non-Volatile Content45–47% w/w
Gardner Color≤ 2
Acid Number10–14 mg KOH/g
Viscosity (25°C, #4 spindle, 20 rpm)3,000–5,000 cP


Get in Touch with ERICW
Let competitive chemical materials go global.

Your Name *

Your Email *

Your Phone

Country

Your Message *