Cosmetic Chemistry at Cape Peninsula University Of Technology | Flashcards & Summaries

Lernmaterialien für cosmetic chemistry an der Cape Peninsula University of Technology

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TESTE DEIN WISSEN
Discuss different types of notes and give ecample of their common notes 
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Top notes 
Reffered to as the head of the nptes
They are the lightest of all the notes
Recognised immediately after application common fragrances are citrus ,light fruits  and herbes
Middle notes 
They considered as the heart of the notes
They last longer than tok notes and they have strong influnce on the base notes to come 
It is often a combination of floral or fruit tones 
Common middles notes are geranium.rose .lemongrass.ylang ylang.lavender .neroli anf jasmine
Base notes
They are the last fragrance notes that appear one the top notes are completely evaporated
The base notes mingle with the heart notes ro create a dull body fragrance
The job is to provide lasting impression 
Common base notes are, cedarewood,tea tree,sandalwood,vanilla ,amber, oakmoss and musk
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TESTE DEIN WISSEN
What are main types of plasticisers and give explanation to your answer
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TESTE DEIN WISSEN
1.Solvents plasticisers 
They are solvents for nitrocellullose 
Normally high mollecular weight esters with high b.p and low votality 
2.Non solvents plasticisers 
.they are added to give additional flexibility 
.solvents system in addition to plasticisers can have a marked effect on the plasticisation of the final film;solvents substitutions can radically affect the behaviour of the film.
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TESTE DEIN WISSEN
What are nail hardeners
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TESTE DEIN WISSEN
They are solutions that are used on their own or incorporated in nail base or top coats 
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TESTE DEIN WISSEN
T
what is the important analytical techniques in the perfume industry and give reasons why
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TESTE DEIN WISSEN
#GC AND MS(Gas chromatography and Mass spectrometry)
#they are a great tool to identify volatile molecules
#IT is a possible tool to qualify for each constituent in an essential oil
#Great for development of products 
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TESTE DEIN WISSEN
What are allergens 
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TESTE DEIN WISSEN
Allergens are chemicals that are used to create or make fragrances 

 
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TESTE DEIN WISSEN
What is nail enamel
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TESTE DEIN WISSEN
Is it a solution of film former of solvents with colourands and able to form a glossy continous coatingon the nails 
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TESTE DEIN WISSEN
Elements of perfume 
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TESTE DEIN WISSEN
#ethyl alcohol 
#stabilizer 
#essential oils 
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TESTE DEIN WISSEN
Dicuss film former 
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TESTE DEIN WISSEN
It forms a form on the nail and has ingredients of nitrocellullose
.nitrocellullose are highly flammable
.The degree of polymerisation of cellulose in the wood pulp controls the viscosity of products 
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TESTE DEIN WISSEN
What characterizes nitrocellullose 
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TESTE DEIN WISSEN
Degree of substitution 
.The viscosity
.solubility profile 
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TESTE DEIN WISSEN
Discuss solvents , give 3 examples of them and their functions 
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TESTE DEIN WISSEN
.orage peel effects occurs when the solvents are drying too rapid and there is also a poor flow
.a dull whitish appearance is called blushing and cooling may cause water condesation from the atmosphere
3 types of solvents 
.Active  solvents:they are true solvents for nitrocellullose,normally ketone and esters e.g ethyl acetate
Core solvents 
.they enhance the salvation power of active solvents.e.galcohol often added to resuce the viscosity of the nitrocellulose enabling higher solid content to be used 
DILLUENTS
.Solvents are mixable with acrive but they are not solvents from nitrocellullose 
.their main function is to lower and stabilize the viscosity of the nail enamel
.They reduce solvent strength 
.They are cheaper than active solvents 
Lösung ausblenden
TESTE DEIN WISSEN
Dicuss secondary resins 
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TESTE DEIN WISSEN
They are added between levels of 5 and 10% to give it good gloss,good adhesion and improve brightness
.Good light stability 
.can cause allergy in some people 
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TESTE DEIN WISSEN
What are the requirements for nail enamel
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TESTE DEIN WISSEN
.should not be harmful to the skin and nail
.non staining 
.should be easy to apply
.Shouldnt be tacky
.quick drying time without blooming 

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Q:
Discuss different types of notes and give ecample of their common notes 
A:
Top notes 
Reffered to as the head of the nptes
They are the lightest of all the notes
Recognised immediately after application common fragrances are citrus ,light fruits  and herbes
Middle notes 
They considered as the heart of the notes
They last longer than tok notes and they have strong influnce on the base notes to come 
It is often a combination of floral or fruit tones 
Common middles notes are geranium.rose .lemongrass.ylang ylang.lavender .neroli anf jasmine
Base notes
They are the last fragrance notes that appear one the top notes are completely evaporated
The base notes mingle with the heart notes ro create a dull body fragrance
The job is to provide lasting impression 
Common base notes are, cedarewood,tea tree,sandalwood,vanilla ,amber, oakmoss and musk
Q:
What are main types of plasticisers and give explanation to your answer
A:
1.Solvents plasticisers 
They are solvents for nitrocellullose 
Normally high mollecular weight esters with high b.p and low votality 
2.Non solvents plasticisers 
.they are added to give additional flexibility 
.solvents system in addition to plasticisers can have a marked effect on the plasticisation of the final film;solvents substitutions can radically affect the behaviour of the film.
Q:
What are nail hardeners
A:
They are solutions that are used on their own or incorporated in nail base or top coats 
Q:
T
what is the important analytical techniques in the perfume industry and give reasons why
A:
#GC AND MS(Gas chromatography and Mass spectrometry)
#they are a great tool to identify volatile molecules
#IT is a possible tool to qualify for each constituent in an essential oil
#Great for development of products 
Q:
What are allergens 
A:
Allergens are chemicals that are used to create or make fragrances 

 
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Q:
What is nail enamel
A:
Is it a solution of film former of solvents with colourands and able to form a glossy continous coatingon the nails 
Q:
Elements of perfume 
A:
#ethyl alcohol 
#stabilizer 
#essential oils 
Q:
Dicuss film former 
A:
It forms a form on the nail and has ingredients of nitrocellullose
.nitrocellullose are highly flammable
.The degree of polymerisation of cellulose in the wood pulp controls the viscosity of products 
Q:
What characterizes nitrocellullose 
A:
Degree of substitution 
.The viscosity
.solubility profile 
Q:
Discuss solvents , give 3 examples of them and their functions 
A:
.orage peel effects occurs when the solvents are drying too rapid and there is also a poor flow
.a dull whitish appearance is called blushing and cooling may cause water condesation from the atmosphere
3 types of solvents 
.Active  solvents:they are true solvents for nitrocellullose,normally ketone and esters e.g ethyl acetate
Core solvents 
.they enhance the salvation power of active solvents.e.galcohol often added to resuce the viscosity of the nitrocellulose enabling higher solid content to be used 
DILLUENTS
.Solvents are mixable with acrive but they are not solvents from nitrocellullose 
.their main function is to lower and stabilize the viscosity of the nail enamel
.They reduce solvent strength 
.They are cheaper than active solvents 
Q:
Dicuss secondary resins 
A:
They are added between levels of 5 and 10% to give it good gloss,good adhesion and improve brightness
.Good light stability 
.can cause allergy in some people 
Q:
What are the requirements for nail enamel
A:
.should not be harmful to the skin and nail
.non staining 
.should be easy to apply
.Shouldnt be tacky
.quick drying time without blooming 

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