Urea-formaldehyde - Wikipedia, the free encyclopedia
Urea-formaldehyde , also known as urea-methanal , named so for its common synthesis pathway and overall structure, is a non-transparent thermosetting resin or plastic, made from urea and formaldehy...
en.wikipedia.org/wiki/Urea-formaldehyde
In homes, the most significant sources of formaldehyde are likely to be pressed wood products made using adhesives that contain urea-formaldehyde (UF) resins. Pressed wood products made for indoor use include: particleboard (used as sub-flooring and shelving and in cabinetry and furniture);
www.epa.gov/iaq/formalde.html
UREA-FORMALDEHYDE; ADHESIVE RESINS*; Anthony H. Conner; Forest Products Laboratory; USDA Forest Service; Approximately 1 million metric tons of urea-formal-dehyde resin are produced annually. More than 70% of this urea-formaldehyde resin is used by the forest products in-;
www.fpl.fs.fed.us/documnts/pdf1996/conne96a.pdf
Urea-Formaldehyde Insulation and Formaldehyde; Formaldehyde is a chemical gas used extensively in the manufacture of many products including building materials and chemical preservatives. Formaldehyde gas has no color but in high quantities, its smell is pungent and can be toxic or irritating.
www.propex.com/C_f_env_ureaform.htm www.propex.com/C_f_env_ureaform.htm
Urea formaldehyde foam insulation (UFFI) has not been used in homes and buildings since the early 1980s. When first used, this insulation gave off formaldehyde gas into the home or building. ... Because of the problems, UFFI insulation has not been used since 1980. Since formaldehyde gas emissions from UFFI decrease with time,
www.heimer.com/environment/uffi.html
Goldschmidt and Neuss in Germany also worked on urea formaldehyde but the first commercially successful thermosetting moulding material was produced by the British Cyanides Co. - based on a mixture of thiourea and urea formaldehyde in 1928.
www.plastiquarian.com/uf.htm
The U.S. Consumer Product Safety Commission, by a 4 to 1 vote, has banned the sale of urea formaldehyde foam insulation for use in residences and schools.
www.cpsc.gov/cpscpub/prerel/prhtml82/82005.html
Urea-formaldehyde foam insulation (UFFI) is an insulating material formerly used for difficult-to-reach cavities inside house walls. Find out why it was banned, and whether you should be concerned about UFFI in your home. ... Formaldehyde is a pungent, colourless gas commonly used in water solution as a preservative...
www.cmhc-schl.gc.ca/en/co/maho/yohoyohe/inaiqu/inaiqu_0... www.cmhc-schl.gc.ca/en/co/maho/yohoyohe/inaiqu/inaiqu_008.cfm
When Was Urea Formaldehyde Foam Insulation Used? ... Urea formaldehyde foam insulation is injected as a mixture of urea formaldehyde resin, an acidic foaming agent, and a propellant, such as air. It was commonly used in existing houses by injecting the foam into areas, such as behind walls, where it was impractical to...
www.carsondunlop.com/OBS/uffi.html