PARALOID™ A-21 (30%) resin is a very hard methyl methacrylate type polymer with excellent intercoat adhesion, hardness, and outdoor durability for use across a variety of applications.

用于：规格漆漆乙烯和金属清漆涂料凹版油墨和套印清漆塑料的顶涂层飞机涂料汽车修补优点：优良的涂层间附着力好的硬度和户外耐久性快干的空气干燥能力提供透明无色的薄膜，具有优异的耐黄变性可用于固体等级形式典型性能溶剂：甲苯/丁醇90/10密度：7.8Lb / Gal（25℃）粘度：250-560（25℃，Cp）闪点：7.8Sfcc（闪点℃）; 105（Tg，℃）分子量：120000（重均）溶解度：9.4硬度：21-22（极限硬度透明膜，Khn）化学成分：mma聚合物供应情况：亚太地区欧洲拉丁美洲北美洲

Used In:

Specification lacquersVinyl and metal clear coatings

Gravure inks and overprint varnishes

Top coats for plastic

Coatings for aircraft

Auto refinishing

Advantages:

Excellent intercoat adhesion

Excellent hardness and outdoor durability

Rapid air-dry capabilities

Delivers clear, colorless films with excellent resistance to yellowing

Also available in solid grade form

Typical Properties

Solvent: Toluene/Butanol 90/10

Density: 7.8 Lb/Gal (25°C)

Viscosity: 250-560 (25°C, Cp)

Flash Point: 7.8 Sfcc (Flash Point °C); 105 (Tg, °C)

Molecular Weight: 120000 (Wt. Avg.)

Solubility: 9.4

Hardness: 21-22 (Ultimate Hardness Of Clear Films, Khn)

Chemical Composition: mma Polymer

Availability:

Asia Pacific

Europe

Latin America

North America