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Date: 26-12-2016
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The chemistry of correction fluid
Correction fluid is an opaque, white fluid that is used to paint over writing or painting errors. Before the invention of word processors, correction fluid was the easiest way you could correct a mistake in a handwritten document.
How does correction fluid work and who invented it?
Normally correction fluid is applied with the help of a brush. The fluid is designed to dry quickly the moment it’s exposed to air. As it dries, a thin white layer is formed over which you can write to conceal the error. Before the invention of correction fluid an entire document had to be discarded if a single error was made. The first versions of correction fluid were made by the founder of Liquid Paper, Bette Nesmith Graham in 1951.
Other ingredients include resin, mineral spirits, colorants, fragrance and dispersant. Correction fluid also contains volatile organic substances. Unused correction ink thickens over a period of time and hardens to become unusable. This is why manufacturers always provide a thinner with correction fluid to retain its liquid state.
Reference:
http://humantouchofchemistry.com/everyday.php?action=view&nid=76
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اكتشاف تأثير صحي مزدوج لتلوث الهواء على البالغين في منتصف العمر
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زهور برية شائعة لتر ميم الأعصاب التالفة
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موكب أهالي كربلاء يستذكر شهادة الإمام الصادق (عليه السلام)
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أهالي كربلاء يحيون ذكرى شهادة الإمام الصادق (عليه السلام) في مدينة الكاظمية
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شعبة مدارس الكفيل النسوية تعقد اجتماعًا تحضيريًّا لوضع الأسئلة الامتحانية
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