Lithopone is a white pigment composed of a mixture of barium sulfate.docx

5/19/2018 Lithopone is a white pigment composed of a mixture of barium sulfate.docx

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Lithopone is a white pigment composed of a mixture of barium sulfate (28 - 30%) and zinc sulfide (68 -

70%) with trace amounts of zinc oxide. It is produced by precipitation through filtering, heating and

quenching works. Lithopone has mostly been replaced by titanium dioxide which is more durable, but it is

much cheaper. It is used as a base for lake pigment and used as a inert pigment for paint, ink and

cosmetics as well as in a large range of applications in plastic industry. It is used as a filler in paper,

leather, and linoleum

Litopon adalah suatu pigmen yang putih yang terdiri atas suatu campuran dari sulfat barium ( 28 -30%)

dan sulfida seng ( 68 -70%) dengan sejumlah jejak dari oksida seng. Itu dihasilkan oleh hujan/timbulnya

melalui penyaringan, memanaskan dan memuaskan bekerja. Litopon mempunyai kebanyakan digantikan

oleh dioksid-titan yang lebih tahan lama, tetapi itu adalah banyak lebih murah. Itu digunakan sebagai

suatu dasar untuk pigmen danau dan menggunakan sebagai suatu pigmen yang tanpa daya untuk cat,

tinta dan kosmetika seperti juga di suatu cakupan yang besar aplikasi-aplikasi di dalam industri plastik. Itu

digunakan sebagai suatu pengisi di dalam kertas, kulit, dan linoleum

The productLITHOPONE 30% DS is an organically coated white pigment based on a coprecipitated zinc sulfide / barium

sulfate.

Typical propertiesLow binder requirementExcellent dispersibilityNeutral hueLow abrasiveness, thanks to lowMohs hardness

ApplicationsPaints and coatings

Suitable for use in matt and semimatt powdercoating

systems, thanks to its favorablerheological properties and excellent compatibilitywith coloured pigments.Paper

Achieves high dry opacity in the pulp.Its good retention permits use in pigment sizepreparations. Bimodal particle distributionimproves the porosity of the paper.Plastics and rubberTiO2 can be partially replaced withLITHOPONE 30% DS in thermoplastic masterbatches.This products low binder requirementcompared to TiO2 permits higher pigmentconcentrations.The use of LITHOPONE 30% DS makes itpossible to reduce friction and abrasion inproduction of master batches and films.The extremely low absorption which

LITHOPONE 30% DS possesses in the near UVrange significantly improves the effects of opticalbrighteners and polymerization initiators.LITHOPONE 30% DS produces good rheologyin duroplastic moulding compounds withoutcausing abrasion.

Produk


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LITOPON 30% DS adalah satu secara organis melapisi pigmen putih berdasar pada aco?precipitatedsulfida seng / sulfat barium.

Kekayaan khas

Persyaratan binder rendah

Dispersibilas sempurna

Roda/warna netral

Abrasive rendah, karena yang rendah

Mohs kekerasan

Aplikasi-aplikasi

Cat-Cat dan salutan-salutan

Pantas untuk penggunaan di dalam alas dan semi?matt powder?coating

sistem, karena yang baik nya yang

kecocokan sifat reologi dan sempurna

dengan pigmen-pigmen yang diwarnai.

Kertas

Mencapai ketinggian mengeringkan sifat taktembus cahaya di dalam bubur kayu.

Ingatan nya yang baik mengizinkan penggunaan di dalam ukuran pigmen

persiapan-persiapan. Distribusi partikel bimodal

perbaiki merembes kertas.

Plastik dan karet

TiO2 dapat secara parsial digantikan dengan

LITOPON 30% DS di dalam master termo-plastik

batch-batch.

persyaratan binder Hal ini produk yang rendah

yang dibandingkan dengan TiO2 mengizinkan pigmen yang lebih tinggi

konsentrasi-konsentrasi.

Pemakaian LITHOPONE 30% DS membuat nya

mungkin untuk mengurangi friksi dan lecet/pengausan di dalam

produksi guru mengelompokkan dan memfilmkan.


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Penyerapan sangat rendah yang

LITOPON 30% DS menguasai di dalam dekat UV

cakupan dengan mantap memperbaiki barang kepunyaan dari yang berhubung dengan mata

pemrakarsa-pemrakarsa bahan pencerah dan polimerisasi.

LITOPON 30% DS menghasilkan reologi baik

di dalam senyawaan cetak yang duroplastic tanpa

menyebabkan lecet/pengausan.

Efficiency is a vital factor in market survival and one of the many factors that decide efficiency is correct materialsselection, which must balance the need for quality, on the one hand, with the need for the lowest possible costs, onthe other. Titanium dioxide is one of the main raw material in the production of emulsion paints. LITHOPONE canplay a key role as an alternative, with no loss of quality. Increasingly large quantities of LITHOPONE are beingincorporated into emulsion paints for this reason. The following article examines the benefits offered by LITHOPONE

in emulsion paints and describes in detail the procedure for adjusting paint formulations for the use of LITHOPONEEfisiensi adalah suatu faktor yang penting di dalam survival pasar dan salah satu [dari] banyak faktorbahwa memutuskan efisiensi benar pemilihan bahan-bahan, yang harus menyeimbangkan kebutuhanakan mutu, pada suatu pihak, dengan kebutuhan akan biaya-biaya yang mungkin paling rendah, di yanglain. Dioksid-titan adalah salah satu [dari] bahan baku utama di dalam produksi emulsi mengecat.LITOPON dapat memainkan suatu peran kunci sebagai satu alternatif, tanpa adanya hilangnya mutu.Jumlah yang besar yang terus meningkat dari LITHOPONE sedang disatukan ke dalam emulsi mengecatuntuk alasan ini. Artikel yang berikut menguji manfaatnya yang ditawarkan oleh LITHOPONE di dalamemulsi mengecat dan menguraikan secara detil prosedur untuk menyesuaikan perumusan-perumusancat untuk pemakaian LITHOPONE

Lithopone, C.I. Pigment White 5, is an mixture of inorganic compounds, is a widely used as a white

pigment powder. It is composed of a mixture of barium sulfate and zinc sulfide. These insoluble

compounds blend well with organic compounds and confer opacity. It was made popular by the cheap

production costs, greater coverage. Related white pigments include titanium dioxide, zinc oxide ("zincwhite"), andzinc sulfide

History

Lithipone was discovered in the 1870s by DuPont. It was manufactured byKrebs Pigments and

Chemical Companyand other companies.[3]

The material came in different "seals", which varied

in the content of zinc sulfide. Gold seal and Bronze seals contain 40-50% zinc sulfide, offeringmore hiding power and strength.

[4][5]Although its popularity peaked around 1920, approximately

220,000 tons were produced in 1990. It is mainly used in paints, putty, and in plastics.[1]

Stability and darkening

Although barium sulfate is almost completely inert, zinc sulfide degrades upon exposure to UV

light, leading to darkening of the pigment. The severity of this UV reaction is dependent on acombination of two factors; how much zinc sulfide makes up the pigments formulation, and its

total accumulated UV exposure. Depending on these factors the pigment itself can vary in shade

over time, ranging from pure white all the way to grey or even black. To suppress this effect, a
http://en.wikipedia.org/wiki/Inorganic_compoundhttp://en.wikipedia.org/wiki/Inorganic_compoundhttp://en.wikipedia.org/wiki/Pigmenthttp://en.wikipedia.org/wiki/Pigmenthttp://en.wikipedia.org/wiki/Barium_sulfatehttp://en.wikipedia.org/wiki/Barium_sulfatehttp://en.wikipedia.org/wiki/Zinc_sulfidehttp://en.wikipedia.org/wiki/Zinc_sulfidehttp://en.wikipedia.org/wiki/Titanium_dioxidehttp://en.wikipedia.org/wiki/Titanium_dioxidehttp://en.wikipedia.org/wiki/Titanium_dioxidehttp://en.wikipedia.org/wiki/Zinc_oxidehttp://en.wikipedia.org/wiki/Zinc_oxidehttp://en.wikipedia.org/wiki/Zinc_oxidehttp://en.wikipedia.org/wiki/Zinc_sulfidehttp://en.wikipedia.org/wiki/Zinc_sulfidehttp://en.wikipedia.org/wiki/Zinc_sulfidehttp://en.wikipedia.org/wiki/Krebs_Pigments_and_Chemical_Companyhttp://en.wikipedia.org/wiki/Krebs_Pigments_and_Chemical_Companyhttp://en.wikipedia.org/wiki/Krebs_Pigments_and_Chemical_Companyhttp://en.wikipedia.org/wiki/Krebs_Pigments_and_Chemical_Companyhttp://h/Lithopone%20-%20Wikipedia,%20the%20free%20encyclopedia.htm%23cite_note-kreb-3http://h/Lithopone%20-%20Wikipedia,%20the%20free%20encyclopedia.htm%23cite_note-kreb-3http://h/Lithopone%20-%20Wikipedia,%20the%20free%20encyclopedia.htm%23cite_note-kreb-3http://h/Lithopone%20-%20Wikipedia,%20the%20free%20encyclopedia.htm%23cite_note-Booge-4http://h/Lithopone%20-%20Wikipedia,%20the%20free%20encyclopedia.htm%23cite_note-Booge-4http://h/Lithopone%20-%20Wikipedia,%20the%20free%20encyclopedia.htm%23cite_note-Booge-4http://h/Lithopone%20-%20Wikipedia,%20the%20free%20encyclopedia.htm%23cite_note-Ullmann-1http://h/Lithopone%20-%20Wikipedia,%20the%20free%20encyclopedia.htm%23cite_note-Ullmann-1http://h/Lithopone%20-%20Wikipedia,%20the%20free%20encyclopedia.htm%23cite_note-Ullmann-1http://h/Lithopone%20-%20Wikipedia,%20the%20free%20encyclopedia.htm%23cite_note-Ullmann-1http://h/Lithopone%20-%20Wikipedia,%20the%20free%20encyclopedia.htm%23cite_note-Booge-4http://h/Lithopone%20-%20Wikipedia,%20the%20free%20encyclopedia.htm%23cite_note-Booge-4http://h/Lithopone%20-%20Wikipedia,%20the%20free%20encyclopedia.htm%23cite_note-kreb-3http://en.wikipedia.org/wiki/Krebs_Pigments_and_Chemical_Companyhttp://en.wikipedia.org/wiki/Krebs_Pigments_and_Chemical_Companyhttp://en.wikipedia.org/wiki/Zinc_sulfidehttp://en.wikipedia.org/wiki/Zinc_oxidehttp://en.wikipedia.org/wiki/Titanium_dioxidehttp://en.wikipedia.org/wiki/Zinc_sulfidehttp://en.wikipedia.org/wiki/Barium_sulfatehttp://en.wikipedia.org/wiki/Pigmenthttp://en.wikipedia.org/wiki/Inorganic_compound


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dopantmay be used, such as a small amount of cobalt salts, which would be added to the

formulation. This process creates cobalt-doped zinc sulfide. The cobalt salts help to stabilize zinc

sulfide so it will not have as severe a reaction to UV exposure.

Production

Lithopone is produced bycoprecipitationof barium sulfate and zinc sulfide. Most commonlycoprecipitation is effected by combining equimolar amounts of zinc sulfate and barium sulfide:

BaS + ZnSO4 ZnS BaSO4

This route affords a product that is 29.4 wt % ZnS and 70.6 wt % BaSO4. Variations exist, for

example, more ZnS-rich materials are produced whenzinc chlorideis added to the mixture ofzinc sulfate and barium sulfide.

[1]

Barium sulfideis produced bycarbothermic reductionofbarium sulfate.Zinc sulfateis obtained

from a variety of zinc products, often waste, by treatment withsulfuric acid.

Safety

Lithopone is not highly poisonous, reflecting the insolubility of the components. Barium sulfate

is used widely in medicine as aradiocontrast agent.Lithopone is allowed to be in contact withfoodstuffs in the US and Europe.

[1]
http://en.wikipedia.org/wiki/Dopanthttp://en.wikipedia.org/wiki/Dopanthttp://en.wikipedia.org/wiki/Coprecipitationhttp://en.wikipedia.org/wiki/Coprecipitationhttp://en.wikipedia.org/wiki/Coprecipitationhttp://en.wikipedia.org/wiki/Zinc_chloridehttp://en.wikipedia.org/wiki/Zinc_chloridehttp://en.wikipedia.org/wiki/Zinc_chloridehttp://h/Lithopone%20-%20Wikipedia,%20the%20free%20encyclopedia.htm%23cite_note-Ullmann-1http://h/Lithopone%20-%20Wikipedia,%20the%20free%20encyclopedia.htm%23cite_note-Ullmann-1http://h/Lithopone%20-%20Wikipedia,%20the%20free%20encyclopedia.htm%23cite_note-Ullmann-1http://en.wikipedia.org/wiki/Barium_sulfidehttp://en.wikipedia.org/wiki/Barium_sulfidehttp://en.wikipedia.org/wiki/Carbothermic_reductionhttp://en.wikipedia.org/wiki/Carbothermic_reductionhttp://en.wikipedia.org/wiki/Carbothermic_reductionhttp://en.wikipedia.org/wiki/Barium_sulfatehttp://en.wikipedia.org/wiki/Barium_sulfatehttp://en.wikipedia.org/wiki/Barium_sulfatehttp://en.wikipedia.org/wiki/Zinc_sulfatehttp://en.wikipedia.org/wiki/Zinc_sulfatehttp://en.wikipedia.org/wiki/Zinc_sulfatehttp://en.wikipedia.org/wiki/Sulfuric_acidhttp://en.wikipedia.org/wiki/Sulfuric_acidhttp://en.wikipedia.org/wiki/Sulfuric_acidhttp://en.wikipedia.org/wiki/Radiocontrast_agenthttp://en.wikipedia.org/wiki/Radiocontrast_agenthttp://en.wikipedia.org/wiki/Radiocontrast_agenthttp://h/Lithopone%20-%20Wikipedia,%20the%20free%20encyclopedia.htm%23cite_note-Ullmann-1http://h/Lithopone%20-%20Wikipedia,%20the%20free%20encyclopedia.htm%23cite_note-Ullmann-1http://h/Lithopone%20-%20Wikipedia,%20the%20free%20encyclopedia.htm%23cite_note-Ullmann-1http://h/Lithopone%20-%20Wikipedia,%20the%20free%20encyclopedia.htm%23cite_note-Ullmann-1http://en.wikipedia.org/wiki/Radiocontrast_agenthttp://en.wikipedia.org/wiki/Sulfuric_acidhttp://en.wikipedia.org/wiki/Zinc_sulfatehttp://en.wikipedia.org/wiki/Barium_sulfatehttp://en.wikipedia.org/wiki/Carbothermic_reductionhttp://en.wikipedia.org/wiki/Barium_sulfidehttp://h/Lithopone%20-%20Wikipedia,%20the%20free%20encyclopedia.htm%23cite_note-Ullmann-1http://en.wikipedia.org/wiki/Zinc_chloridehttp://en.wikipedia.org/wiki/Coprecipitationhttp://en.wikipedia.org/wiki/Dopant

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Lithopone is a white pigment composed of a mixture of barium sulfate.docx