Wako. Specialty Chemicals. Explore for yourself. - C&EN Global

Jun 28, 2004 - Advertisements that appeared within the print issues of Chem. Eng. News have been included in the C&EN Archives to provide a ...
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Wako. Specialty Chemicals.

Explore for yourself. Specializing in azo free-radical polymerization initiators.

Newly expanded line of water soluble products.

Samples shipped at no cost within the USA.

New website.

wakousa.com Wako Chemicals USA, Inc. 1600Bellwood Road Richmond, VA 23237, USA Ph: (804) 714-1912

Wako Pure Chemical Industries, Ltd. 1 -2, Doshomachi 3-Chome Chuo-Ku, Osaka, Japan

Wako Chemicals GmbH NissanstraBe 2 D-41468 Neuss, Germany

Wako

IKS

mm Water Soluble: VA-044 ti / 2 =44°C Lowest temperature azo free-radical initiator commercially available. \

\

CHo

CH3//N

I

I

V-50 ti / 2 =56°C Lowest cost, most versatile product for acidic systems.

CH3

/

N H

CH3

CH3

CH3 HN

C-C-N=N-C-C

C-C-N=N-C-C CH3XN H

CHo

CH3

CH^

C-C-N=N-C-C

Cn-i NH 2

HOOCCH2CH2NH C H 3

VA-086 ti /o =86°C Residual monomer scavenging when post-reaction addition is not possible. Creates functionalized endgroups on the polymer chain.

VA-085 ti /2 =85°C Improved solubility characteristics. Developmental product.

VA-057 ti/ 2 =57°C Designed for use in alkaline systems, especially emulsion polymerization. Developmental product. NH

CH3CH2 T.H20

C H 3 //

C-C-N=N-C-C

HOCH 2 -CH-NH

CH

3

CH

3

CH2CH;

i

NH-CH-CH 2 OH

3

I 7

C-C-N=N-C-C

CH3XNHCH2CH2COOH

/ ' HOCH 2 CH 2 NH

CH

' \

3

CH

3

NHCH 2 CH 2 OH

Organic Soluble: V-70 ti/ 2 =30°C Lowest temperature azo free-radical initiator commercially available. OCHg

CH-j

CH3

CN

CN

CH3

V-601 ti/ 2 =66°C Improved solubility in a wide variety of organic solvents. The nitrile group is eliminated.

VA-061 tV 2 =61°C Forms water soluble salts in the presence of acid where hydrochloric acid is not suitable. * \

OCH3

CH3-C-CH2-C-N=N-C-CH2-C-CH3 CH3

V-65B tV 2 =51°C This versatile product is now available with enhanced solubility.

CH3

CH3

CH3

CH3-CH-CH2-C-N=N-C-CH2-CH-CH3 CHo

CN

CN

CH3

CH3

CH3-C-N=N-C-CH3 ChUOCC

COOCH^

!

CH3

CH3/N

C-C-N=N-C-C CH3

CH3

N

H