• Polymerisation Additives

Robinson Brothers Ltd. makes a range of Novel Odour Thiols, suitable for use as Modifiers for polysulphide resins, molecular weight control in polymer production and as Antitarnish agent for silver.

• Octadecyl Mercaptan (ODM)-Effective Molecular Weight Modifier and shows improved chain transfer activity over traditional thiols. - Molecular Weight 262, Melting Point 18-20 C
• Hexadecyl Mercaptan (HDM) Molecular Weight 284, Melting Point 30 C
• 11-Mercapto Undecanoic Acid (MUNDA)- Exceptional Chain Transfer activity, giving excellent control of the process and molecular weight of polymerisation. - Molecular Weight 218, M.Pt. 47-50 C

Longer Chain Mercaptans (C₁₂ - C₂₂)  with additional functionality, for Epoxy Curatives

• Dipentaerythritol hexakis thioglycolate, Molecular Weight 698, Melting Point 64 C
• Tripentaerythitol octakis thioglycolate, Molecular Weight 968, Melting Point 10 C

UV and Thermal Stabilisers

• Arbestab N, Effective at low concentration, synergises with Flame retarders and other stabilisers, can be used as control agent for photodegradation of polyolefinic films.
• Arbestab Z, Exceptional Antioxidant properties, at low concentrations, high thermal and melt stability, does not affect colour, synergises very effectively with phenolic antioxidants. A very high degree of UV stabilisation is achieved when used in combination with other UV absorbers such as Zinc Oxide and Hydoxybenzophenones.

Other products available are

• Di-isopropyl xanthogen disulphide (DIXD), Molecular weight control, particularly suited to SBR, EPDM and Chloroprene polymerisation. -Molecular Weight 936, Melting Point 55 C
• Tetrabutyl thiuram disulphide (TBUT), Acts as both a molecular weight regulator and a chain stopper. - Molecular Weight 409, Melting Point 20 C