pattern1 Created with Sketch.

Resin Requirements

A synthetic resin, which is used as the core component of the binder, shall fulfill several requirements:

  • high adhesion to silicate fibers to bring and fulfill high strength properties to the insulation
  • good solubility to water for the formation of optimal particles for the spray emulsion
  • high reactivity for curing and solidification
  • no toxicity, lowest possible emissions
  • high heat stability
  • moisture resistance in cured form
  • good aging properties for the long, problem free usable life time of the insulation

Metadynea has a wide portfolio of resins to meet the requirements of modern insulation material. On top of different core resins from Metadynea, wool producers use additives like hydrophobic emulsions, silanes to promote adhesion, dusting preventing emulsions etc.

On top of state-of-the-art resins Metadynea has the resource and skills to provide technical service and support from consulting or problem solving to product and process development, or to assist our customers in their product and productivity development. Metadynea resins come with service.

We are glad to answer your questions and provide required binder solutions and technical service to our customers.


Customers have different manufacturing processes in use and various products in the portfolio. Metadynea can offer you resins made to fit your product, and processing requirements.


In general terms the resins, used for binding glass or stone wool fibers, can be divided in two groups. The choice is depending on economical, processing technology and product related requirements. The two groups of resins – which are both offered by Metadynea – are characterized as follows:

  • resins, which require the addition of urea by wool producer at their production process = unmodified by urea
  • resins, which are “premixed” by Metadynea and do not need a urea addition by customer = urea modified resins, also called RTU (Ready To Use) – resins

Primere 72 6446M

Unmodified by Urea

This resin has very wide temperature range of storage between +5 – +20C. Storage time – up to 3 weeks. Low level of free phenol – not more than 0,6 w-% – lowering stack emission levels. Using ammonium sulphate is not necessary at customer’s plant. Solid content (130C;2h;0,6g) of this resin is high – above 51w-%.

Primere 72 6301M

Unmodified by Urea

This resin has long storage period – up to 28 days. Free phenol level is less than 1w-%. Customer should use ammonium sulphate during binder preparation. The resin is developed for high performance and quality of glass wool products.

Primere 72 J110

Unmodified by Urea

Primere 72 6450M

Modified by Urea

Primere 72 6452M

Modified by Urea

This resin has high solid content – above 53w-% combined with reasonably low free phenol level – not more than 0,8w-%. The resin is well proven in modern production of stone wool and hydro-mass process. Use of ammonium sulphate can be used in binder preparation.

Primere 72 5264M

Modified by Urea

Resin is more stable than 6452M in winter storage: lower temperature limit is +13C. Use of ammonium sulphate is not required. Solid content of this resin is above 48%.

Primere 72 J100

Modified by Urea

Primere 72 J230

Modified by Urea

Primere 72 J230HC

Modified by Urea