Acrylic resins find extremely broad application across various industrial sectors, including coatings, chemical fibers, textiles, adhesives, leather, papermaking, inks, rubber, and plastics. Acrylic Adhesives Acrylic Coatings Superabsorbent Polymers (SAP) Acrylic Rubber (ACM, AEM) Acrylic Plastics: (1) Organic Glass (PMMA) The most prominent variety of acrylic plastics is polymethyl methacrylate (PMMA) resin, which consists of homopolymers or copolymers of methyl methacrylate. Abbreviated as PMMA, it is also commonly referred to as "organic glass," "acrylic sheet," or "acrylate sheet." Based on its physical form, PMMA can be categorized into molding compounds, powders, and sheets (including cast sheets and extruded sheets). Due to its high light transmittance (reaching up to 92%), excellent weather resistance, ease of coloring via pigment addition to prepolymer slurries or granules, ease of modification and molding, and—compared to silicate glass—superior impact resistance and shatter-proof properties, PMMA is widely utilized in numerous fields. These include building materials and home furnishings (windows, signage, decorative lighting fixtures, sound barriers for high-speed railways/highways/bridges, furniture, bathroom fixtures, etc.), the automotive industry (headlight covers, instrument panel covers, etc.), aerospace (aircraft canopies, portholes, windshields, etc.), optical displays (optical components such as lenses and prisms, polarizer materials, eyeglass lenses), and information transmission (light guide plates, optical fibers). As another high-transmittance plastic, polycarbonate—owing to its price advantage—has led to the partial substitution of PMMA demand in several of these sectors. (2) ASA Resin ASA resin is a terpolymer of styrene, acrylonitrile, and butyl acrylate; its mechanical properties are comparable to those of acrylonitrile-butadiene-styrene terpolymer (ABS resin). By replacing the polybutadiene rubber found in ABS with acrylate rubber featuring a saturated backbone structure, ASA achieves weather resistance approximately ten times greater than that of ABS. Furthermore, even after prolonged outdoor exposure, it retains excellent impact resistance. As a significant engineering plastic, it also demonstrates marked superiority over ABS resins in terms of solvent resistance and colorability. Additionally, ASA is an antistatic material, which helps minimize dust accumulation on the resin's surface. ASA serves two primary purposes: first, it acts as a toughening modifier to enhance the properties of materials such as polyvinyl chloride (PVC), polycarbonate (PC), polyethylene terephthalate (PET), and nylon; second, it is blended with acrylonitrile-styrene copolymer (SAN) resins to produce ASA resin itself. This ASA resin is predominantly utilized in automotive interior and exterior components, outdoor building materials, home appliances, sports and leisure equipment, and consumer electronics—with the automotive sector representi...

II. Types of Acrylic Resins (1) Classification by Thermal Behavior (Film-forming Characteristics): ① Thermosetting Acrylic Resins: Based on acrylic monomers as their fundamental components, these resins undergo further reactions—either among their own functional groups or with active functional groups in other resin systems (such as amino resins, epoxy resins, polyurethanes, etc.)—during the heating or film-forming process. This results in curing to form a cross-linked network structure. They exhibit excellent color retention, high hardness, good solvent and weather resistance, as well as superior abrasion and scratch resistance. ② Thermoplastic Acrylic Resins: Generally linear polymers, these resins do not undergo further cross-linking reactions during heating or film formation. They can be repeatedly softened by heat and solidified by cooling. They possess excellent gloss and color retention, as well as good water and chemical resistance. Furthermore, they are characterized by ease of molding and processing, rapid film drying, and convenient application. (2) Classification by Physical State: ① Solid Acrylic Resins: Primarily consisting of thermoplastic acrylic resins—though also including some thermosetting acrylic resins—these materials exhibit excellent mechanical and optical properties at room temperature. ② Liquid Acrylic Resins: These can be broadly categorized into two main groups: solvent-based acrylic resins and water-based acrylic resins. Solvent-based acrylic resins typically utilize organic solvents as their medium, whereas water-based acrylic resins utilize water as their medium. Solvent-based Acrylic Resins: These are primarily synthesized through the copolymerization of pure acrylate monomers, resulting in materials characterized by small particle sizes, multifunctionality, and outstanding performance. They typically present as viscous liquids and are widely utilized in fields such as coatings and adhesives. Preparation methods for solvent-based acrylic resins include emulsion polymerization and suspension polymerization. Emulsion polymerization involves the reaction and polymerization of monomers, initiators, and reaction solvents; typically, aromatic solvents (such as toluene or xylene) or esters (such as ethyl acetate or butyl acetate) are employed as the reaction medium. Suspension polymerization is a relatively complex manufacturing process, primarily utilized for the production of solid resins. Water-based acrylic resins encompass three major categories: water-soluble, water-dispersible, and emulsion-based types. What is commonly referred to within the industry as "water-soluble resin" is, in fact, a dispersion of acrylic resin aggregates formed in water (typically ranging from 0.01 to 0.1 μm); technically, this falls within the colloidal category. However, because the particles within this dispersion are extremely fine—resulting in a transparent appearance—we generally designate it as "water-soluble" to distinguish it from ...

Acrylic resins constitute a broad category of synthetic polymers produced through the copolymerization of acrylate monomers (such as methyl acrylate, ethyl acrylate, butyl acrylate, hydroxyethyl acrylate, etc.) and methacrylate monomers (such as methyl methacrylate—commonly known as the monomer for organic glass or PMMA). I. Core Characteristics and Advantages Excellent Film-Forming Properties: Capable of forming a continuous, transparent, and tough film on the surface of paper. Outstanding Weather Resistance and Anti-Aging Properties: Stable under UV exposure, resistant to yellowing, and capable of maintaining its aesthetic appearance over the long term. Superior Chemical Resistance: Exhibits strong resistance to various chemicals, including oils, fats, acids, and alkalis. Good Adhesion: Demonstrates strong bonding affinity with paper fibers, pigments, and other fillers. Excellent Transparency and Optical Properties: Inherently colorless and transparent, enabling the creation of coatings with high gloss and exceptional clarity. Tunable Flexibility: By adjusting the monomer ratio and polymerization process, the hardness or softness of the resin can be precisely controlled—ranging from highly flexible to extremely rigid.Environmentally Friendly and Safe: Water-based systems that comply with modern environmental regulations. Room 1013, Building A5, Financial Port Center, Yangzijiang Road, Baohe District, Hefei City， Anhui province, China Factory Address: Feidong County Industrial Park, Hefei City, Anhui Province, China +86 0551 63459511 sales@sinogracechem.com vivisinograce@outlook.com +8615755193346 http://www.sinogracechem.com

01 Polyurethane The structure of polyurethane is formed by the reaction of polyisocyanates (e.g., diisocyanate OCN-R-NCO) and polyols (e.g., diol HO-R-OH), where urethane segments are repeating structural units. Polyurethane structures have structures similar to amide and ester groups; therefore, the chemical and physical properties of polyurethane are between those of polyamides and polyesters. Synthesis of Waterborne Polyurethane Waterborne polyurethane (WPU) is a binary colloidal system using water as a medium, including aqueous solutions, aqueous dispersions, and aqueous emulsions. Polyurethane particles are dispersed in a continuous aqueous phase, also known as waterborne PU or water-based PU. It has advantages such as being non-toxic, non-flammable, environmentally friendly, energy-saving, safe and reliable, not easily damaging the coated surface, and easy to operate and modify. Classification of Waterborne Polyurethanes Based on appearance, waterborne polyurethanes can be classified into polyurethane aqueous solutions (particle size <1nm), polyurethane dispersions (particle size 1nm～100nm), and polyurethane emulsions (particle size >100nm). Based on the charge properties of the hydrophilic groups, waterborne polyurethanes can be classified into anionic, cationic, and nonionic waterborne polyurethanes. Based on the synthetic monomers, waterborne polyurethanes can be classified into polyether-type, polyester-type, and polyether/polyester hybrid types. Based on product packaging, waterborne polyurethanes can be classified into single-component and two-component waterborne polyurethanes. 02 Raw Materials for the Synthesis of Waterborne Polyurethanes Polyisocyanates Polyisocyanates used in the synthesis of waterborne polyurethanes include two main categories: aromatic and aliphatic. Aromatic polyols mainly include TDI (toluene diisocyanate) and MDI (diphenylmethane diisocyanate); aliphatic polyols mainly include HDI (hexamethylene diisocyanate) and IPDI (isophorone diisocyanate). Oligomer polyols used in the synthesis of waterborne polyurethanes mainly include two categories: polyether type and polyester type. They constitute the soft segment of polyurethane. Chain extenders are commonly used in the synthesis of waterborne polyurethanes to adjust the molecular weight and the ratio of soft to hard segments. Chain extenders are mainly polyfunctional alcohols or amine compounds. Hydrophilic agents (hydrophilic chain extenders) are chain extenders that can introduce hydrophilic groups onto the main chain of waterborne polyurethane macromolecules. They are functional monomers used in the preparation of waterborne polyurethanes. These chain extenders contain carboxyl groups, sulfonic acid groups, or tertiary amine groups. Polyurethanes with these groups become water-soluble after neutralization and ionization. Neutralizing Agent (Salt-forming Agent) A neutralizing agent is a reagent that can form salts with carboxyl, sulfonic acid, or tert...