Parafinas
Enviado por lococastell • 19 de Septiembre de 2014 • 1.614 Palabras (7 Páginas) • 223 Visitas
PREPARATION OF OIL / WATER EMULSIONS OF PARAFFIN
AND BEES WAXES WITH WATER
Muhammad Salman*, Jamil Anwar, Waheed-uz-Zaman,
Muhammad Umer Shafique, Aisha Irfan
Institute of Chemistry, University of the Punjab, Lahore-54590, Pakistan
Abstract: The wax emulsions have a great industrial importance as these are used in
various fields like protective coatings of fruits, seeds, cemented material, paper boards
etc. They showed great water repellency, lubrication, sewability and finishing to the first
product when applied to knitting yarn in textile industry. In present work a few useful
emulsions are prepared by using paraffin and bees waxes. A variety of emulsifiers and
stabilizers were checked to serve the purpose. The best sprayable emulsions were
obtained using stearic acid triethanolamine and oleic acid triethanolamine as
emulsifiers. Application on cemented materials was also checked.
Introduction [2] polishing cars without water. Cui and
The term wax encompasses a large range his co-workers prepared emulsion
of naturally occurring and synthetic mixing slack wax, neurtal oil,
materials constituted from high fatty acid ethoxylated nonylphenol, oleic acid,
esters (typically C C ) or polymers HOCH CH NH and balanced water. 36 50 2 2 2
[3] (molecular weight 700 - 10,000) that Hayase prepared wax emulsion useful
differ from fats in being harder and less in skin care products containing sorbitan
greasy. The term wax should be rather monostearate, stearic acid, biphenyl
seen as a generic term for materials that alchohol, self emulsified glycerine
o
are solids at 20 C, varying in consistency monostearate, paraffin wax, squalene,
from soft and plastic to hard and brittle. Bu paraben, sodium N stearyl-2-
Chemically, a wax is a type of lipid that glutamate, Me paraben, concentrated
may contain a wide variety of long chain glycerine, dipropylene glycol, retinal
[4] primary alcohols and fatty acids, usually palmitate and water. Klaws and Ute
distinguished from fats by the lack of prepared wax emulsion comprising
triglyceride esters of glycerine (propane- essentially an emulsion of high melted
1,2,3-triol). Paraffin waxes are paraffin wax, an amine salt of carboxylic
hydrocarbons, mixture of alkanes acid, water and optionally alkyl
usually in a homologous series of chain polyglycol ether. The emulsion was
lengths. Paraffin waxes refers to the applicable to underground attachments
solids with n = 20-40. Paraffin wax is and carriageway pavements as soil
[5] unaffected by most common chemical stabilizing agent. Tadahiko ad Yoshika
reagents and has high electrical manufactured an emulsion for coating
13 17 resistivity (10 10 m). Due to its the constructed materials, consisting of
immence properties it has many Me chloride, paraffin wax, nonprotic
industrial and domestic applications like polar solvent and vinyl acetate emulsion
[6] coating of cemented materials, textile particle parts. Kimno and co-workers
fibers etc. prepared an emulsion consisting of
paraffin wax, mircocryst. wax,
[1]
Jinhhuan and co-workers prepared polyethylene nonylphenyl ether and
emulsion by using paraffin wax which is water. The emulsions thus formed used in
applicable in washing, cleaning and cleaning booths which involves
Journal of Scientific Research
Vol. XXXVIII No. 2, December, 2008
PREPARATION OF OIL / WATER EMULSIONS OF PARAFFIN
AND BEES WAXES WITH WATER
Muhammad Salman*, Jamil Anwar, Waheed-uz-Zaman,
Muhammad Umer Shafique, Aisha Irfan
Institute of Chemistry, University of the Punjab, Lahore-54590, Pakistan
Abstract: The wax emulsions have a great industrial importance as these are used in
various fields like protective coatings of fruits, seeds, cemented material, paper boards
etc. They showed great water repellency, lubrication, sewability and finishing to the first
product when applied to knitting yarn in textile industry. In present work a few useful
emulsions are prepared by using paraffin and bees waxes. A variety of emulsifiers and
stabilizers were checked to serve the purpose. The best sprayable emulsions were
obtained using stearic acid triethanolamine and oleic acid triethanolamine as
emulsifiers. Application on cemented materials was also checked. 6
spreading and spraying the emulsion on Following the same procedure different
booth interiors forming a layer and then emulsion have been prepared by
spreading the warm water to melt the changing the emulsifier stabilizer (i.e.
layer and to remove residual coating after stearic acid, oleic acid, oleic acid
[7] the coating process. Reo and Johnson t r i e t h a n o l a m i n e , N P 9 , N P 9
prepared a useful emulsion by using tri e t h a n o l ami n e , b o r a x , b o r a x
carnauba wax, acetaminophen ganular triethanolamine, boric acid, boric acid
and triglycerylmonostearate. The triethanolamine), varying their
emulsion formed was applicable as compostions for both paraffin and bees
pharmaceutical coatings with rapid wax individually, the stablility and water
dissolution and enhanced long term repellency of prepared emulsions were
stability for the pharmaceutically active also checked.
[8] ingredients. Ottboni and Ryan formed
and aqueous paraffin wax emulsion used The prepared emulsion was passed
as water repellent coating on
...