Applications of Wacker VINNOL Resins in Coatings, Inks, and Adhesives

Vinyl chloride-vinyl acetate copolymer is an important industrial resin. Due to its excellent adhesion, chemical resistance, thermoplasticity, and good compatibility with other resins , it is widely used in many industrial fields.

1.        ink

Chlorinated vinyl acetate resins are a key component of many specialty inks, especially in applications where adhesion, durability, and printing quality are critical.

• Packaging and Specialty Inks : Used in retort-resistant inks , cigarette packaging inks , food packaging inks, and advertising inkjet inks , ensuring that the ink does not peel or bleed under harsh conditions.
• Metallic and Plastic Inks : As the base resin for metallic inks , it provides excellent hiding power, adhesion, and acid and alkali resistance. It is also used in inkjet inks for PE substrates to improve adhesion and alcohol resistance.
• Screen printing and conductive inks : This is a commonly used resin in screen printing inks . After modification, it can also be used in conductive silver paste to improve the bending durability of printed circuits.

2.        coating

Chlorinated vinyl acetate resins play an important role in the coatings industry, serving as either the main film-forming agent or a key auxiliary film-forming substance.

• Industrial and protective coatings : widely used in marine anti-corrosion coatings , container coatings , metal anti-corrosion primers , and automotive paints (such as automotive plastisol and anti-rust coating base materials).
• Plastic and wood coatings : Used for spray painting PVC transparent sheets , plastic flooring, toys and other plastic shells , as well as wood coatings . Added to primers as an auxiliary film-forming substance , it can improve adhesion to plastic substrates.
• Specialty functional coatings : used for coatings on rolls , paper coatings , and baking paints on glass products , etc.

3.        adhesive

The adhesive properties of vinyl chloride resins make them a core raw material for many adhesives.

• Packaging and composite adhesives : These are important components of heat-sealing adhesives for pharmaceutical packaging and adhesives for food packaging , and are also used for bonding beverage bottle caps .
• High-performance structural adhesives : As a modifier , they can significantly improve the chemical resistance and heat resistance of polyester hot melt adhesives (bonding strength up to 10 MPa , heat resistance temperature up to 178°C to 220°C ). Reaction with isocyanates and other substances can produce high-performance polyurethane adhesives .
• Specialized adhesives : adhesives specifically for fireworks , as well as for bonding layered metal composite materials .

4.        Package

Chlorinated vinyl acetate resins are widely used in food and pharmaceutical packaging, mainly due to their safety and barrier properties.

• Packaging coatings : Widely used in food packaging coatings (such as the base material for inks in instant noodle packaging bags) and the inner and outer coatings of pharmaceutical packaging .
• Packaging materials : Used for hot melt adhesive coating of aluminum foil , coating for tinplate cans , and base coating of gold and silver cardboard , etc.

5.        Plastics processing and modification

• Plastic products : used in the production of PVC transparent sheets , plastic flooring , magnetic card substrates (such as bank savings cards), as well as artificial leather backing and all-plastic conveyor belts .
• Modifier : Added as a modifier to rigid PVC products , it can improve processing performance. It can also be used as an additive for film products and rigid plastic products .
• Medical materials : After modification, they can be used to manufacture low-temperature thermoplastic medical external fixation materials (such as orthopedic materials).

6.        Artificial leather and leather treatment

• Artificial leather : Coatings , base coats , and color-changing treatments used for artificial leather , providing a good feel and durability.
• Leather treatment : As a surface treatment adhesive for leather , it is used to enhance the texture and durability of leather.

7.        Other applications

• Color chips and tarpaulins : Coatings used in the production of color chips and waterproof tarpaulins for plastics .
• Electronic and conductive materials : Modified chloroacetic acid resin can be used in conductive inks and applied to flexible electronic substrates such as PET films .

 

Compared to commonly used vinyl chloride resins on the market, WACKER's... The advantages of the VINNOL® series are mainly reflected in its extremely high product consistency, rich selection of functional group modifications, and optimized performance for specific substrates . It offers more than just basic vinyl chloride resins; it provides a mature and precisely controllable solution.

A.       Brand and product line advantages

one of the leading manufacturers in the field of vinyl chloride resins , with its VINNOL® brand boasting over 60 years of experience and a highly mature product line. Its core advantage lies in its vast and fully compatible resin system . This means you can blend different types of VINNOL® resins like building blocks, precisely fine-tuning the flexibility, adhesion, chemical resistance, and other properties of the final product to meet very specific formulation needs.

B.       Core performance advantages

The general core advantages of VINNOL® resins include:

• Excellent adhesion : It exhibits excellent adhesion to metals (especially aluminum), polar plastics, glass, PVC , and porous substrates such as paper, fabrics, and concrete .
• Excellent mechanical properties : It possesses high toughness and permanent flexibility , while also exhibiting excellent wear resistance .
• Strong protective performance : It has excellent water resistance, chemical resistance (resistance to oil, grease, dilute acid, alkali, salt solution, etc.), and low gas permeability .
• Inherent flame retardancy : Due to its high vinyl chloride (VC) content, the resin itself possesses flame retardant properties.
• Easy to process : It has good solubility , is easy to process, and the product is tasteless and odorless , making it suitable for applications that are sensitive to odor.

C.       Differentiated advantages of product series

Wacker's core competitiveness lies in its ability to introduce different functional groups, giving each type of resin a unique and targeted advantage.

1)       Models with carboxyl functional group (-COOH) (e.g., VINNOL® E 30/48M, H 15/45M)

These terpolymers, by introducing carboxyl groups, bring about a qualitative improvement in performance:

·        Super strong metal adhesion : Carboxyl functional groups endow it with particularly excellent adhesion to metal substrates , making it an ideal choice for metal coatings and anti-corrosion coatings -3 .

·        Reactive crosslinking ability : Carboxyl groups can serve as reaction sites to crosslink with isocyanates, epoxy resins, or melamine resins , thereby constructing a reactive coating system and significantly improving the overall performance of the final coating.

·        Formulation flexibility : Some models (such as E 30/48M) are soluble in pure ester solvents (such as ethyl acetate) , which not only improves formulation flexibility but also helps reduce costs . Simultaneously, it is also soluble in ketones and monomers such as styrene and acrylates, making it suitable as an additive in solvent-free systems .

2)       Hydroxyl functional group (-OH) type (e.g., VINNOL® E 15/40 A)

These products are designed for primers, alkyd coatings, two-component paints, and baking varnishes , providing excellent toughness and sustained flexibility while maintaining superior abrasion and water resistance.

3)       different VC/ VAc ratios

Even for binary copolymers, Wacker offers a wide range of options. For example, models with high vinyl acetate content (such as VINNOL® H 40/60 , containing approximately 40 wt% VAc ) provide excellent solubility and flexibility ; while models with high vinyl chloride content (such as VINNOL® H 11/59 ) impart superior chemical resistance and water resistance to the resin .

Shanghai Canal, as the distributor of Wacker Chloride Acetate Resin VINNOL series , has been cooperating with the market development for over 20 years. For detailed product information, please contact the official website.

https://www.canalchem.com/products/paint-ink/product-002.html