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Polyvinyl butyral is a versatile resin used in glass manufacturing for safety, colored, and solar panels. It is also used in adhesive tapes, glue, coatings, and dyes for clothing.
Polyvinyl butyral is a resin widely used in glass manufacturing. It is used when very thin, transparent or colored adhesive films are needed to make special glass such as safety glass and colored glass. The resin’s adhesive properties also help make glass panels that harvest solar energy. It has many other adhesive applications and can be applied as a top coat, sometimes even as a paint primer. Clothing dyes also often use polyvinyl butyral.
While you may not be aware of it, anyone who drives or drives an automobile benefits from one of polyvinyl butyral’s major uses: safety glass. Polyvinyl butyral is applied as a film between two layers of tempered glass to produce the shatterproof glass used in automobile windows. This is glass that breaks into smooth-edged pieces instead of jagged pieces in an accident. It is also widely used in buildings.
Many cars and buildings also have tinted windows. This is because polyvinyl butyral, first used in the 1920s, can be produced in many colors by adding dyes and then applied between layers of glass to provide the colored effect. This application stimulates the creativity of many architects to create buildings where the color and tint of the glass play a great aesthetic role. Resin comes into its own in the world of solar energy because it is used in glass panels that collect solar energy to help protect the circuits between the panels that turn the sun’s rays into electricity.
However, adhesive applications are not limited to glass manufacturing applications. As an adhesive, polyvinyl butyral is used in pressure sensitive adhesive tapes and for heat sealing. It is an important component of phenolic acetal glue, which can bind metals.
Many protective coatings are made from polyvinyl butyral for its waterproofing and anti-corrosion properties. These include lining on curtains and coats, concrete and leather. Several metal paint primers contain polyvinyl butyral due to its binding affinity to metal. In this capacity, it is used as a primer on decks, boats and aircraft. It is sometimes used as a varnish on wood
The resin is also a frequent and useful component of the dyes and inks used to print on clothing. Helps prevent dye fading which can occur with continuous washing. Use on fabric also provides abrasion resistance.
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