Isocyanate Monomer / Methacrylates
Functional Monomers: KarenzTM
Karenz™ is our highly specialised product family to support radcure technology.
Our unique lineup of products facilitates the performance enhancement of your materials or formulations for radiation curing of paints, coatings and adhesives in a wide range of applications.
Hybrid monomers of different functional groups of isocyanate (NCO) and double bond in one molecule as well as multifunctional secondary thiol monomers will expand the possibilities to achieve a more efficient and easy design and synthesis for your products, typically for polymers (oligomers).
We believe that Karenz™ will help to develop new products with higher performance and lower environmental impacts.
High purity monomers
All products grouped under Karenz MOI are characterised by their methacrylate group and isocyanate group. A variety of derivatives are available, in order to match your specific molecular design needs. These monomers offer easy and flexible molecular design; and can be used for various purposes, including paints, coating base materials, surface modification, adhesives and photosensitive resin base materials and many others.
KarenzMOI™ is a functional monomer characterized by having both a methylmethacrylate group and an isocyanate group.
| Item | Description |
| Chemical name | 2-isocyanatoethyl methacrylate |
| CAS no. | 30674-80-7 |
| Density (25°C) | 1,10 |
| Viscosity (mPa s, 25°C) | 1,75 |
| Appearance | colourless or slightly yellow liquid |
| Odor | Pungent |
| Substance classification according to CLP | Acute Tox., oral 4, H302; Acute Tox. inhal. 1, H330; Skin Irr. 2, H315; Eye Dam. 1, H318; Resp. Sens. 1, H334; Skin Sens. 1A, H317 |
Karenz MOI-EG is a functional monomer characterized by having both a methacrylate group and an isocyanate group; with additional flexibility.
| Item | Description |
| Chemical name | 2-(2-Methacryloyloxy ethyl oxy) ethyl isocyanate |
| CAS no. | 107023-60-9 |
| Density (25°C) | Not determined |
| Viscosity (mPa s, 25°C) | Not determined |
| Appearance | Colourless or pale yellow liquid |
| Odor | Pungent |
| Substance classification according to CLP | Acute Tox., oral 4, H302 |
Karenz MOI-BM is a functional monomer characterized by having both a methacrylate group and a blocked isocyanate group.
| Item | Description |
| Chemical name | 2-(O-[1’-Methylpropylideneamino]carboxyamino)ethyl methacrylate |
| CAS no. | 78279-10-4 |
| Density (25°C) | 1,09 |
| Viscosity (mPa s, 25°C) | Not determined |
| Appearance | Light yellow liquid |
| Odor | Slightly aromatic |
| Substance classification according to CLP | Acute Tox., oral 4, H302; Aquatic Chronic 2, H411 |
Karenz MOI-BP is a functional monomer characterized by having both a methacrylate group and a blocked isocyanate group (with lower deblocking temperature).
| Item | Description |
| Chemical name | 2-(3,5-Dimethyl-1H-pyrazole-1-carboxamido)ethyl methacrylate |
| CAS no. | 217437-44-0 |
| Density (25°C) | 1,1 |
| Viscosity (mPa s, 25°C) | Not determined |
| Appearance | Colourless to yellow liquid |
| Odor | Not determined | Substance classification according to CLP | Skin Irrit. 2, H315; Skin Sens. C501, H317; Aquatic Chronic 3, H412 |
Isocyanate Monomers / Acrylates
Acrylates
All products grouped under Karenz AOI are characterised by their acrylate group and isocyanate group. A variety of derivatives are available, in order to match your specific molecular design needs. These monomers offer easy and flexible molecular design; and can be used for various purposes, including paints, coating base materials, surface modification, adhesives and photosensitive resin base materials and many others.
*Karenz AOI is a functional monomer characterized by having both an acrylate group and an isocyanate group.
| Item | Description |
| Chemical name | 2-Isocyanatoethyl acrylate |
| CAS no. | 13641-96-8 |
| Density (25°C) | Not determined |
| Viscosity (mPa s, 25°C) | Not determined |
| Appearance | Colourless |
| Odor | Pungent |
| Substance classification according to CLP | Acute Tox., oral 3, H301; Skin Corr. 1C, H314; Resp. Sens. 1, H334; Skin Sens. 1, H317; Muta. 2, H341; Aquatic Chronic 2, H411 |
Industrial grade monomer
**AOI-VM
| Item | Description |
| Chemical name | 2-Isocyanatoethyl acrylate |
| CAS no. | 13641-96-8 |
| Density (25°C) | Not determined |
| Viscosity (mPa s, 25°C) | Not determined |
| Appearance | Colourless |
| Odor | Pungent |
| Substance classification according to CLP | Acute Tox., oral 3, H301; Acute Tox., inhal.3, H331; Skin Corr. 1C, H314; Resp. Sens.1, H334; Skin Sens. 1, H317; Muta. 2, H341; Carc. 1B, H350; Aquatic Chronic 2, H411 |
Karenz AOI-BM is a functional monomer characterized by having both an acrylate group and a blocked isocyanate group.
| Item | Description |
| Chemical name | Not determined |
| CAS no. | Not determined |
| Density (25°C) | Not determined |
| Viscosity (mPa s, 25°C) | Not determined |
| Appearance | Not determined |
| Odor | Not determined |
| Substance classification according to CLP | Acute Tox. 4, H302; Skin Irrit. 2, H315; Aquatic Chronic 2, H411 |
Karenz BEI is a functional monomer characterized by having two acrylate groups and an isocyanate group. This gives advantages in UV curing, adhesion and shrinkage.
| Item | Description |
| Chemical name | 1,1-Bis(acryloyloxymethyl)ethyl isocyanate |
| CAS no. | 886577-76-0 |
| Density (25°C) | Not determined |
| Viscosity (mPa s, 25°C) | Not determined |
| Appearance | Colourless to pale yellow liquid |
| Odor | Pungent |
| Substance classification according to CLP | Acute Tox. 4, H302; Skin Irrit. 2, H315; Eye Irrit. 2, H319; Sens. 1, H317; Aquatic Chronic 2, H411 |
Multifunctional Thiol
Karenz MT
KarenzMT™ will improve film quality, production efficiency and design flexibility of photo-curing resins.
| Item | Description |
| Chemical name | Pentaerythritol tetrakis (3-mercaptobutylate) |
| CAS no. | 31775-89-0 |
| Density (25°C) | 1,2 |
| Refractive Index | 1,523 |
| Viscosity (mPa s, 25°C) | 1200 |
| Appearance | Colourless to yellow liquid |
| Odor | Weak sulphur odour |
| Advantages for UV additive |
|
| Advantages for epoxy curing agent |
|
| Substance classification according to CLP | Skin Sens. 1B, H317; Repr. 2 (Unborn child), H361d; Aquatic Acute 1, H400 (M=1); Aquatic Chronic 2, H411 |
| Item | Description |
| Chemical name | 1,3,5-Tris(2-(3-sulfanylbutanoyloxy)ethyl)-1,3,5-triazinane-2,4,6-trione |
| CAS no. | 928339-75-7 |
| SH equivalent number (g/eq) | 183-195 |
| Viscosity (25°C) mPa･s | -(7,500) |
| Appearance | Colourless to slightly yellow liquid |
| Odor | Slight sulphur |
| Item | Description |
| Chemical name | 1,4-Bis(3-Mercaptobutyryloxy)butane |
| CAS no. | 594836-83-6 |
| SH equivalent number (g/eq) | 142-152 |
| Viscosity (25°C) mPa･s | -(21) |
| Appearance | Colourless to slightly yellow liquid |
| Odor | Slight sulphur |
| Substance classification according to CLP | Acute Tox., oral 4, H302 |
Photo Initiator
SHOWA DENKO K.K. provides dyes that can absorb lights the wavelengths of which are in the region of near infrared rays (NIRs). The dyes can be used as an NIR-absorbing material. Moreover, they can cause polymerization and decoloration when used in combination with specific organic borates and a long-wave light.
| Item | Description |
| Chemical name | 1,1,5,5-tetrakis[4-(diethylamino)phenyl]-1,4-pentadiene-3-ylium p-toluenesulfonate |
| CAS no. | 96233-24-8 |
| Appearance | Blue-violet or brown solid with metallic luster |
| Melting Point | 199-200 |
| λ max |
|
| Substance classification according to CLP | Acute Tox., oral 4, H302; STOT SE 2 (digestive organs), H371; Aquatic Acute 1, H400; Aquatic Chronic 1, H410 |
| Item | Description |
| Chemical name | Tetrabutylammonium butyltriphenylborate |
| CAS no. | 219125-19-6 |
| Appearance | White solid powder |
| Purity (%) | 97 (minimum) |
| Melting Point (°C) | 140-141 |
| Solubility (g/100g) | Methanol 0,7; Acetone 10; DMSO 5 |
| Substance classification according to CLP | Aquatic Acute 1, H400 |
| Item | Description |
| Chemical name | Tetrabutylammonium butyltriphenylborate |
| CAS no. | 120307-06-4 |
| Appearance | White solid powder |
| Purity (%) | 98 (minimum) |
| Melting Point (°C) | 140-144 |
| Solubility (g/100g) | Methanol 1,62; Acetone 104; DMSO 80 |
| Substance classification according to CLP | Skin Sens. 1, H317; Aquatic Acute 1, H400; Aquatic Chronic 1, H410 |