swanlogo2nd.gif (15134 bytes)

Imports    

Products from Bruno Bock, Germany                                      Product list
Products from Evans Chemetics, USA                                    Product list
Products from Dr. H Schmittmann GmbH, Germany         Product list


Products from Bruno Bock, Germany

The most prominent range is represented by THIOGLYCOLIC ACID, (Mercaptoacetic acid) THIOLACTIC ACID (2-mercaptopropionic acid), 3-Mercapto-Propionic Acid, Thiodiglycolic Acid and their derivatives. Thioglycolates and Thiolactates are active ingredients for Cold Wave formulations (PERMS), Hair Straighteners and depilatories. Thioglycolic Acid and its alkali salts e.g. Sodium Thioglycolate are also used for dehairing animal hides and for leather taining.

Esters of Thioglycolic Acid and 3-Mercaptopropionic Acid are basic materials for the synthesis of PVC Stabilisers. (Organo Tin Stabilisers). iso-Octyl Thioglycolate and 2-Ethylhexyl Thioglycolate are the most commonly used Thioglycolates for the manufacture of PVC Stabilisers. The mercapto group may also undergo condensation reactions and additions onto Olefinic double bonds. Beside the main use for the manufacture of Organotin Stabilisers, iso-Octyl Thioglycolate and 2-Ethylhexyl

Thioglycolate are used as Cross-linking agents for Polymethacrylates to adjust the degree of polymerisation.

THIODIGLYCOLIC ACID and its derivatives are suitable for Antioxidants for Polyolefins, & Additive for Electroplating.

THIODIGLYCOLIC ACID ESTERS are low temperature Plasticizers for Synthetic/Nitrile Rubber & Chloroprene and as intermediates for various organic syntheses. Di-n-BUTYL-METHYLENE-bis-THIOGLYCOLATE (MBT - ESTER) may be used as low temperature plasticizer for NITRILE RUBBER & CHLOROPRENE.

DITHIODIGLYCOLIC ACID & its ESTERS can be used in Organic Disulfide and antioxidants for LUBRICANTS.

POLYTHIOLS :

In the recent scientific and patent literature polythiols (polymercaptans) are described for various applications. Therefore they are of growing interest and there is an increasing demand for different substances from this class of compounds. The range of the polythiols can be used in different fields as described in the following examples.

The range of Polythiols can be used as Cross-linking & Chain transfer Agents for Polymethacrylates to adjust the degree of polymerisation, Acting as Chain-transfer agents, polythiols are used in the production of different polymers showing interesting properties, e.g. improved moldability, viscocity, storage stability or heat resistance. The applications of these polymers include compositions for special coatings, inks and optical devices.

Polythiols as crosslinking / curing agents often influence the thermal and mechanical properties of the resulting polymers. They show for example, improved fire resistance, storage stability or flexibility. The compositions mostly are radiation or photocurable and in some cases the polythiols leads to a very fast crosslinking of the polymer.

The use of polythiols as crosslinking / Curing agents in EPOXY RESINS includes special compositions for coatings, adhesives or sealants, e.g. flame-retardants, corrosion-resistant coatings or electrically conductive transparent films. Some of these compositions are fast and volatile-free curable and show a high quality appearance.

ETHYLENEGLYCOL-di-MERCAPTOACETATE is an universal DITHIOL which is used as cross-linking agent and chain transfer agent for acrylate / methacrylate copolymers.

Polythiols can be used in unsaturated systems with natural and Butyl Rubbers and in Radiation-Curable adhesives for surface protective films.

Polythiols are needed for the preparation of SULFUR containing polymers (e.g. Polythiourethanes) for OPTICAL LENSES having a high refractive index. Their application is especially useful in the manufacture of rapidly (UV -)curable resin components for striae and bubble free lenses or peelable adhesive tapes.

Further applications of polythiols are for example their use as heat-stabilisers and antioxidants in different polymer resins, as bleaching and brightness stabilisers in mechanical pulps and as coupling agents to enhance the bonding of STEEL TO EPOXY.

Product List                                                

Chemical Name

Applications in various Industry

Thioglycolic Acid (TGA)/Mercaptoacetic acid

COSMETICS - Depilatories, Perm, Waving Lotions/Aerosols, Hair Straighteners
Manufacture of Bisphenol-A & Thioindigo dyes. PVC Stabilisers, Auxiliary materials for leather

Ammonium Thioglycolate ATG

COSMETICS-PERM Lotions/Creams/Emulsions,
Hair Straighteners 
TEXTILES - Auxiliary Material 
ANTICORROSION - As a rust remover

Calcium Thioglycolate Trihydrate (CaTG)

COSMETICS - Depilatories

Monoethanolamine Thioglycolate (MEATG)

COSMETICS - Alkaline Foaming Perm / Waving Lotion

Potassium Thioglycolate KTG

COSMETICS - Depilatories 

Sodium Thioglycolate Solution NaTG

 LEATHER - Depilatories

Glyceryl Thioglycolate GMT

 COSMETICS - Perms - Acid Wave formulations,
 Stabilisers for hair colours

Cysteine-Thioglycolate-Concentrate  Cyst/ATG

 COSMETICS - Low alkaline Perms

POLYTHIOLS / POLYMERCAPTANS

 

Ethyleneglycol Dimercaptoacetate, Simple GDMA

 Polymer Industry

Ethyleneglycol Dimercaptoacetate, Distilled GDMA

 Polymer Industry

Trimethylolpropane Trimercaptoacetate TTMA

 Polymer Industry

Di-Trimethylolpropane Tetramercaptoacetate Di-TTMA

 Polymer Industry

Pentaerythritol Tetramercaptoacetate PETMA

 Polymer Industry

Glycol Di-3-Mercaptopropionate GD-3-MP 

 Polymer Industry

Trimethylolpropane Tri (3-mercaptopropionate) TT-3-MP

 Polymer Industry

Tri(3-Mercaptopropionate) - Pentaerythritol PET-3-MP

 Polymer Industry

Tetra(3-Mercaptopropionate) Pentaerythritol  

 Polymer Industry

Trimethylolethane Trimercaptoacetate TETMA

 Polymer Industry

Triethylolethane Tri-(3-mercaptopropionate) TET-3-MP

 Polymer Industry

2-ETHYLHEXYL THIOGLYCOLATE 2-EHTG

 PVC Stabilisers / Manufacture of Acrylic Resins

iso-OCTYL THIOGLYCOLATE

 PVC Stabilisers

n-Decyl Thioglycolate

 PVC Stabilisers

Lauryl Thioglycolate 

 PVC Stabilisers

iso-Tridecyl Thioglycolate 

 PVC Stabilisers

n-Tetradecyl Thioglycolate 

 PVC Stabilisers

Alkyl (C13/C15) Thioglycolate TGn, iso

 PVC Stabilisers

Alkyl (C14/C12) Thioglycolate 

 PVC Stabilisers

Methylene-bis-butylthioglycolate MBT

 Rubber Industry

THIODIGLYCOLIC ACID TGDA

(2,2' Thiodiacetic acid)

 Intermediate for Organic Synthesis,  Electroplating
Additive & Antioxidant for Polyolefins
 

Di (2-ethylhexyl) Thiodiglycolate

 Low temperature plasticizers for Nitrile Rubber & Chloroprene

Di (n-butyl) Thiodiglycolate 

 Intermediate

DITHIODIGLYCOLIC ACID DTGDA

 

Diammonium Dithiodiglycolate DADTDG

Perms

Dithiodiglycolic Esters

 Antioxidants for Lubricants

THIOLACTIC ACID TLA(2-Mercaptopropionic Acid)

 COSMETICS - Depilatories

Ammonium Thiolactate ATL

 COSMETICS - Perms

Monoethanolamine Thiolactate MEATL

 COSMETICS - Perms

Cysteine-Thiolactate Concentrate Cys/ATL 

 COSMETICS - Perms

3-MERCAPTO PROPIONIC ACID

 Intermediate

2-Ethylhexyl 3-Mercaptopropionate

 Stabilisers

iso-Octyl 3-Mercaptopropionate

 Stabilisers

iso-Tridecyl 3-Mercaptopropionate

 Stabilisers

Glyceryl 3-Mercaptopropionate

 COSMETICS – Perms

Products from EVANS Chemetics, USA

Product List

Product Name

Abbreviation
CAS#

Application

THIOGLYCOLIC ACID
( Mercaptoacetic Acid )

TGA
CAS 68-11-1

Hair Perms, Polymer,
Anticorrosive

Ammonium Thioglycolate

ATG
CAS 5421-46-5

Hair Perms, Hair Straightener,
Anticorrosive

Monoethanolamine Thioglycolate

MEATG
CAS 126-97-6

Hair Perms

Monoethanolamine Sulfit

Thioset M
CAS 15535-29-2

Hair Perms

Glyceryl Thioglycolate

GMT
CAS 30618-84-9

Hair Perms, PVC-Heatstabilizer

THIOCURE™ GDMA
Glycol Dimercaptoacetate

GDMA
CAS 123-81-9

Polymer, PVC-Heatstabilizer

Iso-Octyl Thioglycolate

IOTG
CAS 25103-09-7

PVC-Heatstabilizer,
Polymer chain length transfer

DITHIODIGLYCOLIC ACID

DTDGA

Not as isolated product
available

Diammonium Dithiodiglycolate

DADTDG
CAS 68223-93-8

Hair Perms

3-MERCAPTOPROPIONIC ACID

MPA
CAS 107-96-0

Bisphenol-A Co-Catalyst

n-Butyl 3-Mercaptopropionate

BuMP
CAS 16215-21-7

Polymer

Iso-Octyl 3-Mercaptopropionate

IOMP
CAS 30374-01-7

PVC-Heatstabilizer

EVANGARD™ 18 MP
n-Octadecyl 3-Mercaptopropionate

ODMP
CAS 31778-15-1

PVC-Heatstabilizer

THIOCURE™ TMPMP
Trimethylolpropane Tri-
3-Mercaptopropionate

TMPMP
CAS 33007-83-9

Polymer crosslinking

THIOCURE™ PETMP
Pentaerythritol Tetra-
3-Mercaptopropionate

PETMP
CAS 7575-23-7

Polymer crosslinking

THIODIPROPIONIC ACID

TDPA
CAS 111-17-1

Intermediate

EVANSTAB™ 12
Dilauryl Thiodipropionate

DLTDP
CAS 123-28-4

Antioxidant

EVANSTAB™ 13
Ditridecyl Thiodipropionate

DTTDP
CAS 10595-72-9

Antioxidant

EVANSTAB™ 18
Distearyl Thiodipropionate

DSTDP
CAS 693-36-7

Antioxidant

EVANSTAB™ 1218
Dilauryl/stearyl Thiodipropionate

E1218
CAS 131-03-52-1

Antioxidant

DITHIODIPROPIONIC ACID

DTDPA
CAS 1119-62-6

Various (Rubber)

THIOSET™ M
Ethanolamine Sulfite

THIOSET M
CAS 15535-29-2

Hair Perms

EVANOL™ (fatty alcohol mix)

EVANOL
various CAS#

Depilatories
cream base

EVANGARD™ DTB
Dithio Bis (Stearyl Propionate)

DTBSP
CAS 6729-96-0

Antioxidant

Thioglycerol

TG
CAS 96-27-5

Various
(Pharma, Polymerisation Additive)

2-Sulfoethyl Methacrylate

SEM
CAS 10595-80-9

Polymer

EVANACID™ 3CS

EVANACID
CAS 99-68-3

Various

HAMPRONOL™ (Acid Chelate)

HAMPRONOL
CAS 3148-72-9

Photo/Film

Products from Dr. H Schmittmann GmbH, Germany                         

SAPONINS :

Saponins are natural substances exhibiting a variety of common properties. They are characterised by their foaming capacity which has rendered them their name. Other typical properties are their hemolytical activity, fish toxicity, their tendency to form complexes with cholesterin, and an antibiotical activity chiefly against lower fungi. Chemical build-up of saponins are by no means uniform. Although all saponins are glucocides, they may vary from each other in their basic structure, namely in their aglycone content. Under this viewpoint, they are divided into stereoid, triterpene and stereoid alkaloid saponins.

Owing to the difficult purification and complex structure of pure saponins, the structures of a great number of these substances could not be established so far. Saponins with just one sugar chain, chiefly at C-3 of aglycone (mono-desmosides) exhibit pronounced saponin properties. These do not exist in many glucosides with 2 independent sugar chains (bi-desmosides), regardless of their surface activity. By separation of sugar, the bi-desmosides can easily be converted into mono-demosides with typical saponin properties. We therefore propose to define such glucosides with ubiquitary sugars and terpenoidal penta or tetracyclical aglycones as saponins that are of homolytical effect either by themselves or may be transferred into substances of hemolytical activity by hydrolysis. Hemolysis is an easily determinable property and therefore considered a substantial characteristic.

Saponins are widely spread in flora. Systematical examination of Central-Asian plants reveal that 1730 species out of 104 families contained even 627 triterpene and 127 stereoid saponins. In total, 79 (75.9%) of the families examined contained saponins. In view of this widespread occurence and the relatively high contents between 0.1% and 30% in plants and individual plant components respectively, saponins should be considered probably the most frequently occuring group of secondary plant ingredients.

Mostly, saponins exist in the form of complex mixtures of hardly separable, individual combinations within plants. These may vary both in their aglycone and sugar contents. The components of such a mixture may be so similar to each other that until now separating them has been impossible. For the same reason, checking of saponins for a certain quality standard is extraordinarily difficult. The result of this is that a good and reliable supply of saponins must inevitably be based on a great amount of trust between the saponin producer and its consumer.

QUILLAYA SAPONIN :

Among the saponins produced on a large industrial scale, quillaya saponin is the grade to be classified on the top rank in terms of quality, because of its purity and uniform standard. The raw material for production of quillaya saponin is the quillaya bark imported from Chile, also known as "soap bark", washing wood or Panama bark. The bark is derived by peeling the quillaya tree, quillaya saponariae, from the family of rosacees. In chemical terms, the saponins of the quillaya bark as far as known belong to the ^-12-oleanon type. Quillaya saponin is available in different degrees of purity. The Q-types described hereunder principally vary in their saponin contents.

In the USA the use of quillaya extract in food and beverages is permissible. It is registered under the F.E.M.A. No. 2937 and was tested by the FDA under No. 172.510 (GRAS LIST). In the United Kingdom the use of quillaya extract in food and beverages is permissible according to the Statutory Instruments 1975 No. 1486.

ROOT SAPONINS :

The root saponins also belong to the ^-12-oleanon type nearly exclusively, most of them representing triterpen carbonic acids. They are extracted from various species of soapwort roots or their mixtures e.g.

  • Iranian Soapwort Root
  • Levantine Soapwort Root (also referred to as Egyptian, Russian, Hungarian or White Soapwort Root).

Frequently used in earlier time for popular medicine, today for production of FILM MATERIAL and PHOTOSENSITIVE PAPERS as well as for foaming and adhesive agents in extinguishing foams.

APPLICATIONS FOR SAPONINS :

  • Production of film and photographic papers.
  • Production of (photo-sensitive) copying papers for reprographical industry.
  • As surface-active substance.
  • As surface-active chemical in cosmetic products, e.g. Shampoos, Liquid soaps, Toilet articles, Foam baths, Face packs etc.
  • As foaming ingredient in tooth paste.
  • For cleaning gold and silverware.
  • For electroplating applications.
  • As additive in dyestuffs and varnishes.
  • As chemical in fire extinguishers.
  • As foaming and flavouring agent in drinks (USA & UK).
  • For emulsion of fats and oils in industrial and food applications.
  • For pharmaceutical purposes.
  • As a Laboratry chemical for measuring certain blood values.
  • As a special cleaning agent for sensitive, high-value textiles.

Product List                                                      

Chemical Name

Applications in various Industry

Saponinum depuratum 
levissimum Q

 Production of Film Material and Photographical
 Papers. Cosmetics industry for production of high quality shampoos counteracting the loss of hair, mainly for older male people.  

Saponinum depuratum 
levissimum Q - For the requirements of the DAB 9 (German Pharmacopoeia, 9th edition).according to DAB 9

 Pharmaceutical & Cosmetic Industries.

Saponinum depuratum Q-C, Viscous fluid

Pharmaceutical & Cosmetic Industries.

Saponinum depuratum levissimum QA

Additives for Food or Drinks depending on country permission.

Saponinum depuratum levissimum QB

Additives for Food or Drinks depending on country permission.

Saponinum No. 374 (Technical Saponin) 

For applications where 100% standard of quality is not an essential requirement. In general, these are triterpinoidic Saponins.

Saponinum No. 374 P (Technical Saponin) 

For applications where 100% standard of quality is not an essential requirement. In general, these are triterpinoidic Saponins.

Saponin Type B 

In some applications of Film & Photographic papers