ضد شره و غلظت دهنده تیکسوتروپی بسیار قوی رنگ های پایه حلال

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ضد شره و غلظت دهنده تیکسوتروپی بسیار قوی رنگ های پایه حلال
  • عمومی
  • کشور سازنده
    • آلمان
  • وزن برحسب گرم
    • 400gr
    • فروش ضد شره و غلظت دهنده تیکسوتروپی بسیار قوی رنگ های پایه حلال
  • نحوه ارسال
    • ارسال رایگان با پست پیشتاز درب منزل یا محل کار
  • برگه اطلاعات فنی کالا TDS
    • Efka® RM 1900
    • Efka® RM 1900 by BASF is a modified hydrogenated castor oil. It acts as a rheology modifier. It provides excellent sag resistance for non-aqueous formulations and higher temperature stability. It is tin-free. Efka® RM 1900 by BASF is designed to be used in solvent-based systems.
    • Efka® RM 1900 Product details
    • Product Type
    • Rheology Modifiers / Thickeners
    • Chemical Composition
    • Modified hydrogenated castor oil
    • Physical Form
    • Powder
    • Product Status
    • COMMERCIAL
    • Applications/ Recommended for
    • Coatings > Solventborne
    • chlorinated rubber
    • alkyd resins
    • epoxy resins
    • unsaturated polyester
    • acrylates
    • polyurethane
    • epoxy esters
    • PVC and PVC copolymers
    • polyethylene chloride
    • bitumen
    • Bio Based
    • No
    • Efka® RM 1900 Properties
    • VOC content < 0.1 %
    • Solids content 100 %
    • Application
    • Efka® RM 1900 extra is suitable as a rheology additive for solvent
    • based and solvent-free systems such as epoxy resin paints, plastisols,
    • caulking compounds, putties and knifing fillers.
    • the advantage of Efka® RM 1900 is that it tolerates relatively high
    • working temperatures which are particularly evident wherever the
    • solvent consists mainly of white spirit.
    • Efka® RM 1900 shows optimum temperature stability in coatings based
    • for instance on air-drying alkyd resins.
    • however, temperature stability is somewhat lower in systems
    • formulated mainly with aromatic hydrocarbons, such as paints based
    • on chlorinated rubber, polyvinyl copolymers, chlorinated polyethylene,
    • etc.
    • recommended concentrations
    • Efka® RM 1900 is preferably processed in high speed grinders. the
    • addition is usually made in powder form, where it is beneficial to
    • predisperse the thickener for approximately five minutes in the solventbinder
    • mixture, prior to pigment addition.
    • another method consists of firstly preparing a Efka® RM 1900 paste (i.e.
    • a «pre-gel»). to ensure proper dispersion of the thickening agent, it is
    • essential that:
    • • certain temperature limits are observed
    • • sufficient shear forces to ensure adequate dispersion are
    • generated.
    • stirring alone is not sufficient to achieve adequate homogenization,
    • even if the thickener is added in a pre-gelled form. The shear forces
    • usually generated in dissolvers, pearl mills or similar grinding
    • equipment, are generally sufficient to obtain the degree of dispersion
    • required.
    • when using the thickener in paints, the solvent of which consists mainly
    • of white spirit, a working temperature of 50 - 60 °C is required. In
    • conjunction with adequate shear, these paints - especially alkyd resin
    • paints - develop an excellent thixotropy within these temperature limits.
    • Short-time exposure to temperatures of approx. 80 - 90 °C will not
    • cause a harmful effect. In systems formulated with Efka® RM 1900 ,
    • containing aromatic hydrocarbons such as chlorinated rubber paints,
    • the optimum temperature range is lower, e.g. in the region of 40- 60 °C.
    • Short-time exposure to a temperature of approx. 80 °C will not cause
    • any harmful effect. These properties may vary in individual paint
    • systems and should be tested by the user.
    • and three parts by weight of xylene (or other higher aromatic solvents)
    • are stirred intensively until a thick paste is obtained. After adding a
    • further four parts by weight of xylene, intensive stirring is continued for
    • approximately 10 minutes.
    • although Efka® RM 1900 should preferably be used as a powder, it may
    • also be processed in the form of a prepared gel. The use of these socalled
    • «pre-gels» can facilitate the dispersion process, but still require
    • high shear to be applied, as well as the above mentioned temperature
    • limits to be observed.
    • a workable pre-gel was obtained by the following method: One part by
    • weight of Efka® RM 1900 extra and three parts by weight of xylene (or
    • other higher aromatic solvents) are stirred intensively until a thick paste
    • is obtained. After adding a further four parts by weight of xylene,
    • intensive stirring is continued for approximately 10 minutes.
    • after a maturing time of approximately 12 hours a transparent and
    • homogeneous paste has developed which is also stable after prolonged
    • storage. The amount added lies generally between 0.2 and 2.0%,
    • calculated on the finished paint. The correct After a maturing time of
    • approximately 12 hours a transparent and homogeneous paste has
    • developed which is also stable after prolonged storage. The amount
    • added lies generally between 0.2 and 2.0%, calculated on the finished
    • paint. The correct amount depends on the desired thickness and the
    • general requirements for the coating. It is evident that highly thixotropic
    • paints call for a certain compromise regarding flow properties. Upon
    • request, we will be pleased to provide you with reference formulations.

نقد و بررسی

نام محصول: 

Efka RM 1900

ضد شره و غلظت دهنده تیکسوتروپی بسیار قوی  رنگ های پایه حلال

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