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

2. 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

3. 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

4. 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 (4HBA)
Methoxy Polyethylene Glycol Monoacrylate (MPEG Acrylate)
Stearyl Acrylate (STA)
Tetrahydrofurfuryl Acrylate (THFA)

5. Osaka Organic Chemical
tert-Butyl Acrylate (tBA)
2-Hydroxyethyl Acrylate (HEA)
2-Ethoxyethyl Acrylate (2ETA)
Pentaerythritol Triacrylate (PET3A)
Phthalic Acid & other acid function acrylates
Fluorinated Acrylates and Methacrylates
Over 100 different acrylate and methacrylate monomers

6. 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:

7. 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

8. 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
25°C is poise
Specific 20°C is gr/cc

9. 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)
25°C is 1, ,000 mPS
Similar solubility parameters as BAC-45, Odorless
Higher acrylate concentration than BAC-45 allows faster curing, higher crosslink density and a more complete cure.

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