POLYBUTADIENE DIACRYLATE BAC45 BAC15 SAN ESTERS CORPORATION SAN

POLYBUTADIENE DIACRYLATE (BAC-45 & BAC-15) SAN ESTERS CORPORATION

SAN ESTERS CORPORATION Formed in 1989 as a joint venture of the following three companies (The word “San” means “ 3” in Japanese) – Mitsubishi Rayon Corporation Methacrylate Producer – Osaka Organic Chemical Company Specialty Acrylate Producer – Kowa American A worldwide chemical trading company

Osaka Organic Chemicals • Osaka Organic Chemicals (OOC) was established in 1941 originally for the manufacture of synthetic fragrances and specialty chemicals • Produce a wide variety of specialty chemicals, solvents, photoresists, coating resins and hair care resins • OOC is a high technology company with over 20% of staff involved in research and development

Osaka Organic Chemical • OOC’s largest product line is acrylate monomers, which San Esters offers into the US market as a natural complement to MRC’s Methacrylates – Isobornyl Acrylate (IBXA) – 4 -Hydroxybutyl Acrylate (4 HBA) – Methoxy Polyethylene Glycol Monoacrylate (MPEG Acrylate) – Stearyl Acrylate (STA) – Tetrahydrofurfuryl Acrylate (THFA)

Osaka Organic Chemical – tert-Butyl Acrylate (t. BA) – 2 -Hydroxyethyl Acrylate (HEA) – 2 -Ethoxyethyl Acrylate (2 ETA) – Pentaerythritol Triacrylate (PET 3 A) – Phthalic Acid & other acid function acrylates – Fluorinated Acrylates and Methacrylates – Over 100 different acrylate and methacrylate monomers

Polybutadiene Diacrylate • Generally only acrylate functionality reacts, unsaturation in polybutadiene backbone normally does not react or further polymerize • Molecular weight is designed to balance viscosity& acrylic reactivity with the hydrophobic/elastomeric properties of finished resin • OOC is investigating other molecular weights and polymer backbones such as:

Polybutadiene Diacrylate (BAC-45) • BAC-45 is a specialty Oligomer that can impart both Elastomeric and Hydrophobicity into polymer systems. • Molecular weight is around 3, 000 and is available as a clear slightly yellow viscous liquid. • Now available in commercial quantities (drums or pails) • Non-hazardous, Odorless, Very low draize & TSCA listed • Inhibitor level is 1, 000 ppm MEHQ

Polybutadiene Diacrylate (BAC-45) • BAC-45 can be UV cured or conventionally cured either alone or combined with other organophilic monomers, oligomers or resins. It can replace urethane oligomers. • Soluble in Hexane, Aromatic solvents, Tetrahydrofuran • Insoluble in Water, Acetone and Methanol • Viscosity @ 25°C is 40 - 80 poise • Specific Gravity @ 20°C is. 9 - 1. 0 gr/cc

Polybutadiene Diacrylate (BAC-15) • BAC-15 is a specialty Oligomer that still imparts both hydrophobic & elastomeric properties with substantially lower viscosity and molecular weight (approx. 1400) • Viscosity @ 25°C is 1, 000 - 3, 000 m. PS • Similar solubility parameters as BAC-45, Odorless • Higher acrylate concentration than BAC-45 allows faster curing, higher crosslink density and a more complete cure.

Polyisoprene Diacrylate - PIPA • • • Newest development from OOC Similar in solubilities & properties as BAC-15 & BAC-45 Viscosity @ 25°C is 5, 000 - 12, 000 m. Pa Molecular Weight is approx. 2700 Not listed on TSCA