Polyvinyl Butyral Resin PVB – Trusted Manufacturer & Supplier

Polyvinyl Butyral Resin

ANHUI LIWEI CHEMICAL CO.,LIMITED

[Introduction]

Polyvinyl butyral (PVB) is a polymer compound and one of the most widely used chemical products among polyvinyl alcohol and its derivatives. Since its industrial production in my country in the early 1960s, decades of development and improvement have resulted in a relatively mature production process, equipment, and management system.

PVB resins possess properties such as high tensile strength, strong adhesion, impact resistance, transparency, and optical clarity. PVB resins are used in general industrial coatings and wood coatings, weathering primers, ceramic substrates, composite materials, structural adhesives, and gravure or flexographic printing inks. They are particularly suitable for use as an adhesive film interlayer in laminated safety glass for automotive windshields and architectural safety glass.

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Product physical and chemical properties

1. Physical properties:

This product is a thermoplastic resin.

Appearance	White granules or powder.
Relative density	1.08-1.10
Fill density	0.18-0.35 g/ml
Refractive index	1.488 (20°C)
Water absorption	<4%
Softening temperature	60-65°C
Glass Transition Temperature	66-84°C (varies with degree of polymerization)
Ultimate Tensile Strength	40-50 MPa
Rockwell Hardness	45
Specific Heat	0.4 kJ/(kg·°C)
Dielectric Constant (60 Hz)	2.7-3.3
Dielectric Strength	400-480 V/Joule
Decomposition Temperature	Above 200°C
Melting Temperature	165-200°C
Thermal Stability	Shifts above 100°C.

Solubility: Soluble in methanol, ethanol, n-butanol, isopropanol, n-pentanol, benzyl alcohol, butanol, diacetone alcohol, propylene glycol ethyl ether/methyl ether/propyl ether, acetone, methyl ethyl ketone, cyclohexanone, dichloromethane, chloroform, methyl acetate, ethyl acetate, butyl acetate, acetic acid, etc.

Compatibility: This product has excellent compatibility with phthalates, pyrogallol esters, sebacate esters, n-hexyl adipate, plasticizers, cellulose acetate, phenolic resins, urea-formaldehyde resins, furfural resins, epoxy resins, and natural resin rosin, significantly improving the performance of these resins.

2. Chemical properties:

Polyvinyl butyral is a secondary reactive polymer, a hot-melt resin that can be cross-linked and hardened with thermosetting resins. It is chemically stable and resistant to chemicals, solvents, sunlight, oxygen, ozone, inorganic acids, and aliphatic hydrocarbons.

3. Special properties:

(1) High transparency: This product has extremely high light transmittance, with a transmittance of over 90% at 660μm.

(2) Film-forming properties: This product has good film-forming properties and can be rolled, extruded, leveled, and coated to form films. Its film has excellent tensile strength, tear strength, abrasion resistance, flexural properties, and gloss.

(3) Weather resistance: This product is UV-resistant and not prone to aging under natural conditions.

(4) Cold resistance: This product is resistant to low temperatures of 0-60℃ and maintains good mechanical strength at low temperatures.

(5) Abrasion resistance: More than 10 times that of rubber.

(6) Adhesion: This product has good adhesion to metals, plastics, leather, glass, wood, etc.

(7) Pigment dispersion: This product has good dispersion and stability for various pigments.

Specifications

Item	Appearance	Particle size exceeds 20 mesh sieve %	Volatile matter%	Viscosity /mPa·s	Vinyl butyral base %	transparency		Free acid HCl %	Ash %
Item	Appearance	Particle size exceeds 20 mesh sieve %	Volatile matter%	Viscosity /mPa·s	Vinyl butyral base %	660 μm	430 μm	Free acid HCl %	Ash %
SD-0	White powder or granules	＞99	≤3	≤5	68-80	＞90	＞80	≤0.05	≤0.05
SD-1		＞99	≤3	5-10	68-80	＞90	＞80	≤0.05	≤0.05
SD-2		＞99	≤3	10-18	68-80	＞90	＞80	≤0.05	≤0.05
SD-3		＞99	≤3	18-30	69-80	＞90	＞80	≤0.05	≤0.05
SD-4		＞99	≤3	30-60	70-80	＞90	＞80	≤0.05	≤0.05
SD-5		＞99	≤3	60-180	70-80	＞90	＞80	≤0.05	≤0.05
SD-6		＞99	≤3	＞180	70-85	＞90	＞80	≤0.05	≤0.05

Packing & Storage

Packing:This product is packed in two layers, the inner layer is a plastic film bag, and the outer layer is a plastic woven bag (lined with a layer of plastic film). The net weight of each bag is 12.5KG, and it can be packed according to user requirements.

Storage:This product should be stored in a dry and ventilated warehouse and should not be mixed with other products.

Handle with care during transportation to prevent sharp objects from puncturing the packaging, and protect from moisture, rain and exposure to sunlight.

Application Areas

1. Transparent materials

Because this product has special adhesion and high transparency to both inorganic and organic glass, it can be used as an interlayer material for safety glass. Safety glass made with this product as an interlayer has been widely used in windshields of cars and airplanes and window glass of high-rise buildings. Because safety glass made with PVB as an interlayer has extremely strong impact resistance, high transparency, water resistance, and aging resistance, and can be used in an environment of minus 60°C, it can also replace products made with organic glass as a transparent material. It is also widely used in safety guardrails such as escalators and counter safety protection in the financial jewelry industry.

2. Coatings

Because this product has the characteristics of high bonding strength, cold resistance, oil resistance, wear resistance, and good corrosion resistance, it is widely used in:

(1) Wood coatings

Surface treatment agent for plywood and primer for hardboard and insulation board, thermoplastic polyvinyl acetal resin modified phenolic resin: high mechanical strength, good flexibility, cold resistance, and excellent atmospheric aging resistance, it can be used for bonding wood and metal.

(2) Metallic paint

Used for ordinary drying paint and baking paint for metal. Natural resin, synthetic resin and quick-drying oil are added to polyvinyl butyral. Polyvinyl butyral significantly improves the adhesion, toughness and durability of this paint. Adding thermosetting resin will increase its impact resistance, heat resistance and adhesion. For example, a mixture of a phenolic resin and a small amount of polyvinyl butyral can be made into an excellent baking paint, which can be used for food containers.

(3) Metal primer

This product has strong adhesion to metal and good adhesion to surface coatings. It can be used as a primer for metal materials such as steel, aluminum, galvanized steel, iron, and copper. It is now widely used in coatings for marine ships, submarines, seaplanes, submerged drilling rigs, bridges, electrical appliances, etc.

(4) Coatings for metal foils

Coating PVB solution on metal foils (mainly aluminum foils) can improve the strength and moisture resistance of the foils, and can be completely wrapped with heat sealing. It is used for packaging foods such as chocolates and biscuits, as well as automatic packaging of medicines, photographic parts, etc.

(5) Coatings for vacuum evaporation

The alcohol solution of this product can adhere well to plastic surfaces, paper metal surfaces, and can be used as an adhesive for vacuum evaporation, such as vacuum aluminum plating, and coatings for processed surfaces.

(6) Concrete coatings

When the solution of this product is used as a base coating, it can improve the durability of water-based paint films.

(7) Waterproof coatings

As a waterproof paint for fabrics, adding this product can achieve good results. It can be used to make tents, coats, food bags, raincoats, raincoats, etc.

(8) Coatings for leather

The film of this product shows strong elongation at room temperature and can maintain this property at low temperatures. Therefore, it can be used to prepare soft and elastic films. This has become a unique property of this product.

(9) Glossy surface protective coatings

Used for varnishes for woodworking crafts, paints for metal wires and other various metal plating surfaces. Used for tennis rackets, racket clips, etc.

(10) Powder coatings

This product is a modifier for epoxy resin powder coatings and is used to produce solvent-free and environmentally friendly coatings.

(11) Casting coatings

This product can be used for more than 40 casting coatings, including glass color coatings, metal casting coatings for centrifugal casting, light-curing coatings for artificial marble decorative panels, special casting coatings, etc.

3. Adhesives:

This product contains hydroxyl, acetyl and butyraldehyde groups and has high bonding properties, so it can be made into various adhesives

(1) Glass bonding: Because this product has extremely high bonding strength, appropriate elasticity and softness, it can be used to bond glass.

(2) Metal bonding: This product can be mixed with phenolic resin to prepare different brands of acetal phenolic glue, which is used for bonding various metals. Apply the glue liquid on the metal surface, wait for the solvent to evaporate, and then heat and press the coated metal.

(3) Bonding of enameled coils: Apply the solution of this product to the coil and heat it to bond the coil.

(4) Heat-sealing adhesive: This product can be mixed with natural resins, synthetic resins and plasticizers and can be used as a heat-sealing adhesive.

(5) Adhesive for "transfer trademarks": This product can be used as an adhesive for "transfer trademarks" on porcelain. It not only saves processes but also improves product quality. The fired ceramics have bright colors and smooth textures. It has been widely used as a resin for "porcelain flower paper". In addition, it can also be used for "transfer trademarks" on textiles.

(6) Adhesive film: This product can be used for heating and bonding cloth to cloth or other materials after being combined with other synthetic resins, synthetic rubbers and plasticizers.

(7) Pressure-sensitive adhesive: It is used as an adhesive raw material for pressure-sensitive adhesive tapes such as cellophane adhesive tapes and polyethylene adhesive tapes.

(8) Hot-melt adhesive: This product is a hot-melt resin and can be used to produce hot-melt adhesives.

(9) Other adhesives: It can be used as an adhesive for non-woven fabrics, an adhesive for electrostatic flocking, and a raw material for leather adhesives.

4. Application in fiber processing:

(1) Coating: The solution of this product with plasticizers can be applied to various textiles to make them waterproof and anti-fouling, without destroying the original feel and style of the textiles. Adding cross-linking resins, curing agents, etc. can improve the processing effect.

(2) Fiber treatment agent: The dispersion of this product containing plasticizers can be used as a cotton fabric treatment agent, shrinkage-proof agent, wear-resistant agent, and stiffening agent. Clothes made from various fibers after sizing with it are soft, wrinkle-free, and sun-resistant.

(3) Fabric printing and dyeing: The solution of this product can be used for fabric printing and dyeing, with good printing and dyeing effects, and is washable and non-fading.

(4) Other resin finishing: It can improve the wear resistance and softness of fabrics.

(5) Parts: This product can be mixed with synthetic rubber such as butadiene rubber, chloroprene rubber, etc. to form electromechanical components with high impact and high strength molds, as well as hoses, hard tubes, rods, etc.

5. Applications in other fields

(1) Reflective sheet adhesive

Due to the good dispersibility of polyvinyl butyral for colorants, transparency and adhesion to plastic films, plastic films coated with polyethylene and glass bead solutions are used in traffic control sheets and guide signs.

(2) Dye transfer ribbon ink

Due to the good dispersibility of polyvinyl butyral for dyes, inks and sublimation dyes based on polyvinyl butyral resin are applied to plastic films, and the dyes are transferred to surface-treated paper by thermal sublimation.

(3) Electronic adhesives

This product contains hydroxyl, vinyl acetate and butyraldehyde groups and has high bonding properties. Phenolic resin is added to the ethanol solution of this product to make an adhesive that can be used for a long time at 120℃. It has strong adhesion to metal, wood, leather, glass, fiber, and ceramics; it can be used to manufacture fiberglass, replacing non-ferrous metals such as steel, aluminum, and copper; the adhesive made by adding this product and a curing agent to epoxy resin is often used for bonding and assembling electronic instrument components, bonding metal to porous materials, emergency repairs, etc. It can also be used in the field of electronic ceramics. In the development of ceramic integrated electronic circuits, this product with medium viscosity and low hydroxyl content is used as a ceramic powder adhesive to obtain the original strength of ceramics. It can also be used as a magnetic powder adhesive. (4) Copper foil adhesive for copper clad laminates This product is combined with phenolic resin to produce copper foil adhesive for the production of copper clad laminates. It has good peel strength and soldering temperature resistance and is widely used. (5) Self-adhesive paint This product is the main raw material for self-adhesive enameled wire paint. After the various coil windings used in motors, electrical appliances, and instrument electrodes are wound and formed using this enameled wire, as long as they are heated for a few minutes at a certain temperature or treated with an appropriate solvent, the coils can be self-adhesive without the need for dipping or drying.

(4) Copper foil adhesive for copper clad laminates This product is combined with phenolic resin to produce copper foil adhesive for the production of copper clad laminates. It has good peel strength and soldering temperature resistance and is widely used.

(5) Self-adhesive paint This product is the main raw material for self-adhesive enameled wire paint. After the various coil windings used in motors, electrical appliances, and instrument electrodes are wound and formed using this enameled wire, as long as they are heated for a few minutes at a certain temperature or treated with an appropriate solvent, the coils can be self-adhesive without the need for dipping or drying.

Free Quote

Liwei PVA is one of the top 10 PVA factories and the top 100 strongest enterprises in anhui province.In 2010,Liwei PVA is evaluated as advanced and high technical company. We mainly deals in polyvinyl alcohol,PVA,PVA fiber and raw materials for producing PVA like vinyl acetate.

For samples, pricing, or more information, please call us at 0086-25-52397803 or mail to info@china-pva.net or fill out the following form. We will respond to you as soon as possible.

Tel: 0086-25-52397803

E-mail: info@china-pva.net

General Information

	Health Hazards	FIRST AID
Inhalation	According to the material form, it is not the normal way of contacting.	Move victim into fresh air. If breathing is difficult, give oxygen and consult a physician immediately.
Skin	No harm in general situation.	No harm in general situation. First aid is not needed.
Eyes	This product may cause temporary discomfort following direct contact with the eye.	Rinse thoroughly with plenty of water for at least 15 minutes and consult a physician if feel uncomfortable.
Ingestion	Accidental ingestion of the product may be harmful to the health of the individual.	Never give anything by mouth to an unconscious person. Call a physician immediately.

Stability and Reactivity

Reactivity	Contact with incompatible substances can cause decomposition or other chemical reactions.
Chemical stability	Stable under proper operation and storage conditions.
Possibility of hazardous reactions	Under normal conditions of storage and use, hazardous reactions will not occur.
Conditions to avoid	Incompatible materials, heat, flame and spark.
Incompatible materials	Avoid contact with oxidants, acids, alkalis.
Hazardous decomposition products	Under normal conditions of storage and use, hazardous decomposition products should not be produced.

	SYMPTOMS	PREVENTION	FIRST AID
Safety Phrases	None
RIDADR	None
WGK Germany	None
Packaging Group	None
Hazard Class	None

Inhalation	None	None	None
Skin	None	None	None
Eyes	None	None	None
Ingestion	None	None	None

Frequently Asked Questions

What is PVB Resin?

Polyvinyl butyral resin is a solvent-based resin synthesized from polyvinyl alcohol (PVA) and butyraldehyde in an acetal reaction under the action of a catalyst.PVB resins have a range of superior physical and chemical properties, including high transparency, elasticity, toughness, alkali resistance, oil resistance, flexibility, low-temperature impact resistance, etc. In addition, PVB resins have good adhesion to metals, ceramics, plastics, leather, and wood and exhibit good adhesion to other resins (e.g., epoxy resins, phenolic resins, etc.). In addition, PVB resins have good adhesion to metals, ceramics, plastics, leatherwood, etc., and good compatibility with other resins (e.g., epoxy resins, phenolic resins, etc.)

What is PVB Resin used for?

Safety glass manufacturing: PVB resin is an interlayer material used in the manufacture of safety glass for automobiles and buildings. When glass is impacted, PVB film prevents glass fragments from flying and maintains the integrity of the glass, increasing safety.
Coatings and Inks: PVB resins are used as components in primers, baking paints, wood finishes, and printing inks, providing excellent adhesion and weathering resistance.
Electronics & Electrical: PVB resins can be used as binders for electronic ceramics and printed circuit boards, as well as modifiers for hot melt adhesives to improve product stability and reliability.
Textile processing: PVB resin can be used to waterproof textiles, providing excellent waterproofing and anti-pollution properties. It creates strong adhesion with various fiber materials, allowing textiles to maintain their original softness and breathability.
Other adhesive applications: PVB resin can also be used as an adhesive between metal and metal, metal and plastic, providing good adhesion and weather resistance.
Ceramic powder processing: PVB resin can quickly dissolve in most polar and non-polar solvents due to its special particle porosity and surface properties, making ceramic powder obtain good strength and softness for processing and molding.

How is PVB Resin produced?

Raw material preparation: After specific quality checks and pretreatment of the two raw materials, polyvinyl alcohol (PVA) and butyraldehyde, add catalysts, and stabilizers to promote and control the acetalization reaction.
Dissolution and filtration: the raw materials and additives are mixed and gradually converted to liquid form under heating conditions. The solution is then passed through a filtration unit that removes impurities and solid particles to ensure the purity of the resin.
Degassing and cooling: The filtered resin solution is degassed to remove air bubbles and excess water. The degassed resin solution is then passed through a cooling unit and cooled to a suitable temperature for subsequent processing and molding.
Extrusion & Drawing: The cooled resin solution is extruded and stretched to the required size and thickness using a drawing machine to form the PVB film.
Curing & Cutting: The drawn PVB film is cured by high temperature and pressure to cross-link the resin molecules in the solid state, increasing the strength and durability of the film. The cured PVB film is then cut by cutting machines to the required size for subsequent use.

How is PVB Resin packaged and stored?

Packaging: PVB resins should be packaged in well-sealed packaging materials that are shielded from sunlight, such as ziplock bags or drums, to prevent the ingress of air, moisture, and other contaminants and damage from ultraviolet rays in sunlight.
Storage: PVB resin should be stored in an environment with stable temperature and humidity, and the storage area should be kept clean to avoid dust, impurities, and other contaminants from entering the package.

What are the precautions for the use of PVB Resin?

PEnsure that the operating area has good ventilation conditions and avoid prolonged contact with resin or inhalation of dust generated by it to reduce irritation to the respiratory tract and skin.
When handling PVB resin, appropriate personal protective equipment, such as protective glasses, protective gloves, and respirators, should be worn to prevent direct contact with the resin with the skin and eyes and to reduce the risk of inhaling resin dust.