Butyl acrylate

　　Application Fields

　　With its characteristics of "high polymerization activity + excellent flexibility," BA is the most widely used monomer among acrylates (accounting for approximately 40% of the total), extensively used in scenarios requiring flexibility, adhesion, and film-forming properties:

　　Coatings and Paints:

　　Latex Paint: Copolymerized with MMA at a 7:3 ratio (the "soft monomer" BA provides flexibility, while the "hard monomer" MMA provides hardness) to prepare interior architectural wall paints. The film elongation is > 300% (GB/T 16777), scrub resistance reaches over 3000 cycles, and low-temperature film-forming performance is excellent (minimum film-forming temperature < 0℃).

　　Industrial Coatings: Copolymerized with isooctyl acrylate for use in anti-corrosion coatings for steel structures. Due to the strong weather resistance of the ester group, the coating's outdoor weathering resistance (QUV test) reaches 2000 hours without chalking, and adhesion (cross-cut method) reaches level 0.

　　Adhesives and Sealants:

　　Pressure Sensitive Adhesives (PSA): Copolymerized with vinyl acetate (VAc) to prepare tape adhesives. BA provides tack (180° peel strength > 5 N/25mm), while VAc enhances cohesion. It is suitable for express packaging tapes (holding power > 24 hours, GB/T 4851).

　　Water-based Adhesives: Modified polyvinyl alcohol (PVA) emulsion, where BA segments enhance the flexibility of the adhesive film. Used for paper lamination, its fold endurance (180° repeated folding 50 times without cracking) is superior to pure PVA adhesive.

　　Synthetic Rubber and Elastomers:

　　Acrylate Rubber (ACM): Copolymerized with acrylonitrile. Its oil resistance (immersed in 150℃ mineral oil for 100 hours, volume change < 10%) is superior to nitrile rubber. Used for automotive oil seals and high-temperature resistant hoses.

　　Thermoplastic Elastomers (TPE): Block copolymerized with styrene (SBS/BA system). Tensile strength reaches 15 MPa, elongation at break > 500%. Used for shoe sole materials (wear resistance improved by 30% compared to pure SBS).

　　Polymer Emulsions and Resins:

　　Textile Sizing: Copolymerized with acrylamide to prepare formaldehyde-free sizing agents. BA imparts film-forming properties to the sizing agent (film breaking strength > 2 MPa), and adhesion to polyester fibers (>80%) is superior to starch sizing, reducing the breakage rate during weaving.

　　Paper Coatings: Copolymerized with methacrylic acid for surface coatings on coated paper, improving paper gloss (>85%) and printability (ink absorption 30-50 g/m2).

　　Other Fields:

　　Oilfield Chemicals: Used as a monomer for drilling fluid viscosity reducers. Copolymerized with 2-acrylamido-2-methylpropanesulfonic acid (AMPS), it can maintain drilling fluid viscosity stability at high temperatures (150℃) (apparent viscosity change < 10%).

　　Medical Materials: Modified polylactic acid (PLA). BA segments improve the brittleness of PLA (impact strength increased from 2.5 kJ/m2 to 8.0 kJ/m2), used for coatings on degradable sutures.