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Excellent general furniture finish, harder than standard lacquer. Conversion varnish or Acid-Cat Lacquer: Transparent, all sheens from 5% to Gloss Excellent protection against many substances Meets UK and European standards for "severe use". Uses toxic solvents, including toluene. Moderate. Requires spray equipment. Used in professional shops only.
Moisture cured polyurethane–urea coatings have been made by reacting 1,2,3-triazole rich polyether polyols with HMDI at NCO/OH eq. ratio of 1.2 to obtain isocyanate-terminated polyurethane prepolymers. The prepolymers were cured under atmospheric moisture to make polyurethane–urea free films.
A table green wood-stained and varnished with three layers of polyurethane varnish Polyurethane varnishes are typically hard, abrasion-resistant, and durable coatings. They are popular for hardwood floors but are considered by some wood finishers to be difficult or unsuitable for finishing furniture or other detailed pieces.
Lacquer dish with Chinese character for longevity, mid 16th century Maki-e sake bottle with Tokugawa clan's mon, Japan, Edo period Lacquer plate, Nam Định province, Vietnam, Nguyễn dynasty. Lacquer is a type of hard and usually shiny coating or finish applied to materials such as wood or
An assortment of polyurethane foam products for cushioning and insulation. Polyurethane foam is a solid polymeric foam based on polyurethane chemistry. As a specialist synthetic material with highly diverse applications, polyurethane foams are primarily used for thermal insulation and as a cushioning material in mattresses, upholstered furniture or as seating in vehicles.
Preventive methods may include limiting exposure to light to a maximum of 40 years at 100 lux or 80 years at 50 lux, [5] maintaining stable temperature and humidity levels, using safe and proper art handling with gloves and proper art storage, per current professional museum standards such as those from the American Alliance of Museums. [13]
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Without elasticity, the varnish would soon crack, allowing water to penetrate the wood beneath. Prior to the development of modern polymer chemistry, varnish production was rudimentary. Originally, spar varnish was a "long oil" varnish, composed primarily of drying oil with a small proportion of resin, usually boiled linseed oil and rosin. [1]