echemi logo
Product
  • Product
  • Supplier
  • Inquiry
    Home > Coatings News > Paints and Coatings Market > Coating knowledge: Discussion on chemical toxicity of various components in latex paint

    Coating knowledge: Discussion on chemical toxicity of various components in latex paint

    • Last Update: 2020-04-03
    • Source: Internet
    • Author: User
    Search more information of high quality chemicals, good prices and reliable suppliers, visit www.echemi.com
    Core tip: with the improvement of people's living standards, people's awareness of environmental protection and safety and health has been gradually enhanced, and people are increasingly concerned about the safety of interior and exterior wall coatings, As the most widely used latex paint for interior decoration, is there any toxicity? If so, which components are toxic and how toxic? The so-called chemical toxicity refers to the ability of a certain amount of chemicals to cause damage to human body It can be considered that as long as all the chemicals reach a certain dose, they will damage the human body; on the contrary, if there is not a certain amount, that is, less than the dose that causes damage to the human body, they will not damage the human body Therefore, consider Paint agent, top 10 Chinese wall paint brands Recommended introduction: interior wall paint and exterior wall paint can achieve beautiful, clean and pleasant effects, but the effects in different environments are different, so the color of the paint will be different There are ten brands of Chinese paint, ten brands of global paint, ten brands of Chinese wall paint, and ten brands of Chinese paint, Famous trademark of Chinese paint and coating In private rooms, most of us choose according to our own personality, personal hobbies and living habits The younger generation will choose the interior wall paint with rich colors and bright colors, while the older ones will have some working experience Home of coatings news: with the improvement of people's living standards, people's awareness of environmental protection and safety and health has gradually increased, and people are increasingly concerned about the safety of interior and exterior wall coatings, As the most widely used latex paint for interior decoration, is there any toxicity? If so, which components are toxic and how toxic? The so-called chemical toxicity refers to the ability of a certain amount of chemicals to cause damage to human body It can be considered that as long as all the chemicals reach a certain dose, they will damage the human body; on the contrary, if there is not a certain amount, that is, less than the dose that causes damage to the human body, they will not damage the human body Therefore, when considering the toxic effect of chemical substances on human body, in addition to the chemical toxicity of chemical substances themselves, it is also necessary to make clear the dose of their contact with human body, and consider the way and time distribution of their contact with the body Composition analysis we know that latex knee is composed of base material (also known as film-forming material, adhesive, etc.), pigment (filler), various additives and water, etc We will discuss these components one by one 1, the base materials used in base latex paint are pure acrylate emulsion, benzene acrylic emulsion paint, vinegar acrylic emulsion, polyvinyl acetate emulsion, etc Acrylate polymer itself is non-toxic, and several countries, such as the U.S Food and Drug Administration (FDA), expressly allow it to be used in food packaging Although the monomer and emulsifier in emulsion polymerization have certain toxicity, the emulsion polymer will contain a small amount of free monomer The production and two processing of emulsion polymer may involve some safety and environmental problems However, after emulsion forming the paint film, these free monomers and emulsifiers will volatilize, and ultimately the paint will not harm human body Polyvinyl acetate polymer is odorless, tasteless and nontoxic Polyvinyl acetate resin produced by solution polymerization or suspension polymerization can replace natural resin as the base material of chewing gum According to FDA regulations, polyvinyl acetate copolymers can also be used in food packaging Several other commonly used emulsions are also non-toxic However, it should be pointed out that in the low-grade interior wall coating, some manufacturers use polyvinyl alcohol or polyvinyl acetal (formaldehyde or butyraldehyde) as the base material, and the synthesis of polyvinyl acetaldehyde uses the aldol condensation reaction in organic chemistry, which is neither quantitative nor instantaneous Moreover, polyvinyl alcohol is a macromolecular alcohol substance, and the reaction conversion rate is unlikely to be high Therefore, there must be a certain amount of formaldehyde in polyvinyl formal The formaldehyde toxic carcinogen has a strong stimulating effect on the skin and mucous membrane When the concentration is 5ppm, it will cause coughing and chest tightness Long term contact may cause mild eye, nose and throat irritation symptoms, dry skin, softening of nail, etc., so the paint produced with its base material is harmful to human body Of course, the coatings produced with them as base materials do not belong to the category of latex paint 2 Pigments commonly used in pigment (filler) emulsion paint include coloring pigments and physical pigments Commonly used coloring pigments include titanium dioxide, lithopone, iron oxide red, sun resistant yellow G, phthalocyanine blue B, pigment carbon black, etc Titanium dioxide is the most important white pigment, which is widely used in many industries, such as cosmetics, paper making and ceramics, etc in addition to coating The color paste is generally used for color matching of emulsion paint, and the responsible emulsion paint manufacturers generally use environmental friendly color paste, which is non-toxic and harmless to human body Common physical pigments are light calcium carbonate with high purity, which can be used in toothpaste and other edible products Heavy carbonic acid, talcum powder, mica powder, barite powder, kaolin, wollastonite powder are all crushed by the corresponding natural ore; these inorganic minerals are non-toxic and generally do not contain substances harmful to human body 3 Home of adjuvant coatings focuses on coatings, diatom mud, paint coating, coating process, fire retardant coating news and coating, diatom mud, paint coating, coating process, decoration knowledge and decoration effect map of fire retardant coating,
    This article is an English version of an article which is originally in the Chinese language on echemi.com and is provided for information purposes only. This website makes no representation or warranty of any kind, either expressed or implied, as to the accuracy, completeness ownership or reliability of the article or any translations thereof. If you have any concerns or complaints relating to the article, please send an email, providing a detailed description of the concern or complaint, to service@echemi.com. A staff member will contact you within 5 working days. Once verified, infringing content will be removed immediately.

    Contact Us

    The source of this page with content of products and services is from Internet, which doesn't represent ECHEMI's opinion. If you have any queries, please write to service@echemi.com. It will be replied within 5 days.

    Moreover, if you find any instances of plagiarism from the page, please send email to service@echemi.com with relevant evidence.