Manufacture of magnesia pastes (LUVATOL®), additives and products for vacuum infusion for the production of thermoset molding compounds.

Lehmann&Voss&Co. KG – Geschäftsteam Composite Materials

HamburgNew on Amplifa

1894Founding of the parent company Lehmann&Voss&Co.

1903Start of magnesium oxide production

approx. 30,000 t/yearQuantity of magnesium oxide sold

up to 20Standard LUVATOL® pastes in the product range

About LEHVOSS Composite Materials

The Composite Materials business team of Lehmann&Voss&Co. in Hamburg develops and produces the LUVATOL® magnesium oxide, magnesium hydroxide and calcium hydroxide thickening pastes for controlled, reproducible thickening of unsaturated polyester resins in SMC and BMC production. Well over 30,000 t of MgO are sold annually; the standard range comprises up to 20 pastes with precisely defined properties. In addition, the team offers specialty products for thermoset compounds, including coextruded polyamid RELEASE FILM carrier films for SMC and relining applications, LUVOGARD® flame retardant additives, LUVATINE® dispersing aids and LUVOTRENT® release agents. Since 2010, the business team has also supplied products for vacuum infusion technology: PEEL PLY peel fabrics based on PA 6.6, COMBIMESH flow aid composites and coextruded polyamide VACUUM FILM. Product development, production, laboratory and pilot plant are located under one roof at the Hamburg site; customers include manufacturers of SMC/BMC molding compounds in Europe.

Site: Hamburg
Processes: Manufacture of magnesium oxide and magnesia pastes (LUVATOL® thickening pastes), Development and production of specialty products/additives for thermoset compounds (SMC/BMC), Products for vacuum infusion technology (PEEL PLY, COMBIMESH, VACUUM FILM), Individual customer-specific formulation development (laboratory and pilot plant), Application technology consulting, Individual product development / customer-specific formulations, Quality control with rheometers
Materials: Magnesium oxide (MgO), Magnesium hydroxide, Calcium hydroxide, unsaturated polyester resins, PVC plastisols, PA 6.6 (peel fabric), Polyamide (co-extruded vacuum film), Reaction resins
Certificates: Rheometer-based reactivity control
Founded: 1894
Industries: SMC/BMC (thermoset molding compounds), Vacuum infusion technology, Reaction resins, PVC plastisols, Textile coatings

01
Raw material selection (magnesia types from Asia, America and Europe)
02
Formulation development in laboratory and pilot plant
03
Production of the LUVATOL® thickening pastes
04
Quality control by rheometer
05
Delivery with application technology consulting

Materials & Processes

MgO

Magnesium oxide (magnesia pastes)

Basic material of the LUVATOL® thickening pastes for reproducible thickening of unsaturated polyester resins in SMC/BMC production.

Mg(OH)2

Magnesium hydroxide

Paste base for applications with deviating thickening properties in the SMC/BMC process.

Ca(OH)2

Calcium hydroxide

Paste base for controlled thickening of unsaturated polyester resins.

UP-Harz

Unsaturated polyester resins

Resin component whose thickening is controlled with LUVATOL® pastes.

PVC

PVC plastisols

Field of application of the LUVOGARD® flame retardant additives.

PA 6.6

PA 6.6 (peel fabric)

Material of the PEEL PLY peel fabrics for optimum surfaces in vacuum infusion.

PA-Film

Coextruded polyamide film

Material of the VACUUM FILM for vacuum infusion technology.

Sites

Hamburg

Composite Materials business team: production, laboratory and pilot plant under one roof

Materials: Magnesia pastes (MgO, magnesium hydroxide, calcium hydroxide), additives, infusion products

Rheometers for quality control

Products

**LUVATOL® thickening pastes**Magnesia pastes · SMC/BMC

Inside the production

Experience and innovation at Lehmann&Voss&Co.

Industries

SMC/BMC (thermoset molding compounds)Vacuum infusion technologyReaction resinsPVC plastisolsTextile coatings

Processes & technical limits

Processes	Tolerance	Max. part	Weight	Lot size	Materials
Manufacture of magnesium oxide and magnesia pastes (LUVATOL® thickening pastes)Plastics	–	–	–	over 30,000 t MgO/year	Magnesium oxide, Magnesium hydroxide, Calcium hydroxide
Development and production of specialty products/additives for thermoset compounds (SMC/BMC)Plastics	–	–	–	–	Reaction resins, PVC plastisols, unsaturated polyester resins
Products for vacuum infusion technology (PEEL PLY, COMBIMESH, VACUUM FILM)Plastics	–	–	–	–	PA 6.6, Polyamide film (co-extruded)
Individual customer-specific formulation development (laboratory and pilot plant)Engineering	–	–	–	–	–

1 Anlagen & Maschinen

Machine	Manufacturer / model	Quantity	Working area	Year built	Site
Rheometer (quality control of thickening pastes)	–	–	–	–	–

Additional services

Application technology consultingIndividual product development / customer-specific formulationsQuality control with rheometers

Reference customers

Afton Chemical (distribution LEHVOSS Italia)

Quality

Quality control of the LUVATOL® pastes is carried out on modern rheometers using methods proven over many years; reactivity (reaction speed and end plateau) is continuously checked during production against defined specification limits in order to ensure consistent thickening properties from batch to batch.

Evidence	Hamburg
Rheometer-based reactivity control

History

1894
Founding of the parent company Lehmann&Voss&Co. in Hamburg
1903
Start of magnesium oxide production at Lehmann&Voss&Co.
2010
Launch of the product range for vacuum infusion technology (PEEL PLY, COMBIMESH, VACUUM FILM)