Ad
related to: white paper chemicals
Search results
Results From The WOW.Com Content Network
Chemical pulping involves dissolving lignin in order to extract the cellulose from the wood fiber. The different processes of chemical pulping include the Kraft process, which uses caustic soda and sodium sulfide and is the most common; alternatively, the use of sulfurous acid is known as the sulfite process, the neutral sulfite semichemical is treated as a third process separate from sulfite ...
A correction fluid (or correction liquid) is an opaque, usually white fluid applied to paper to mask errors in text. Once dried, it can be handwritten or handdrawn upon. It is typically packaged in small bottles, with lids attached to brushes (or triangular pieces of foam) that dip into the fluid. The brush applies the fluid to the paper.
Bleaching of wood pulp is the chemical processing of wood pulp to lighten its color and whiten the pulp. The primary product of wood pulp is paper, for which whiteness (similar to, but distinct from brightness) is an important characteristic. [1]
The pulp produced up to this point in the process can be bleached to produce a white paper product. The chemicals used to bleach pulp have been a source of environmental concern, and recently the pulp industry has been using alternatives to chlorine, such as chlorine dioxide, oxygen, ozone and hydrogen peroxide.
The kraft process involves treatment of wood chips with a hot mixture of water, sodium hydroxide (NaOH), and sodium sulfide (Na 2 S), known as white liquor, that breaks the bonds that link lignin, hemicellulose, and cellulose. The technology entails several steps, both mechanical and chemical. It is the dominant method for producing paper.
Sixty-nine percent of the brands contained PFAS, with paper straws more likely to contain the chemicals. The researchers found 90% of paper straws had PFAS, compared to 80% of bamboo straws, 75% ...
Johanknecht enlisted the help of his associate George Kloosterhouse, a basement waterproofer who experimented with chemicals, and together they developed their own correction fluid, introduced as "Wite-Out WO-1 Erasing Liquid". In 1971, they incorporated as Wite-Out Products, Inc.
A new study from Belgian researchers found that paper straws had higher concentrations of long-lasting, water resistant "forever chemicals" than plastic or steel straws.