Shell Chemical Company

1961 ◽  
Vol 53 (11) ◽  
pp. 131A-131A
Keyword(s):  
Chemical Company ◽  
Shell Chemical

Eponate 12, a new epoxy resin: Comparisons with EPON 812 and observations on its use for general biological electron microscopy

1987 ◽  
Vol 45 ◽  
pp. 628-629
Author(s):  
J.A. Mascorro ◽  
G.S. Kirby
Keyword(s):  
Electron Microscopy ◽  
Epoxy Resin ◽  
Flow Rate ◽  
Epoxy Resins ◽  
Physical Characteristics ◽  
Past Study ◽  
Chemical Company ◽  
Shell Chemical

Many epoxy resins have been introduced during the last several years as replacements for Epon 812 since the Shell Chemical Company discontinued production of this popular embedding resin. In a past study, the present investigators examined several of the “replacement” resins for physical characteristics such as viscosity, flow rate, density, mass weight, and hardness of the polymerized medium. In addition, other equally important parameters including sectioning and infiltrating character as well as stain-ability and section strength subsequent to beam and vacuum conditions also were evaluated. The present work follows a similar rationale and seeks to determine this same information for Eponate 12, an epoxy resin designated as a true generic replacement for the formerly available Epon 812 product.For purposes of physical comparisons, Eponate 12 was tested against a sample of original Shell Epon 812 still maintained in our laboratory.

A Novel Biocidal Elastomer

2001 ◽  
Vol 74 (2) ◽  
pp. 331-337 ◽  
Author(s):  
D. B. Elrod ◽  
J. Gibb Figlar ◽  
S. D. Worley ◽  
Royall M. Broughton ◽  
J. R. Bickert ◽  
...  
Keyword(s):  
Chemical Process ◽  
Triblock Copolymer ◽  
Protective Clothing ◽  
Food Packaging ◽  
Formation Reaction ◽  
Surgical Gloves ◽  
Chemical Company ◽  
Elastomeric Material ◽  
Elastomeric Materials ◽  
Shell Chemical

Abstract Biocidal elastomeric materials have been produced by a three-step chemical process on commercial elastomers which are composed of a styrene/ethylene-butylene/styrene triblock copolymer. The commercial elastomeric material employed was Kraton®G, produced by the Shell Chemical Company in Houston, Texas. The three-step process involved a Friedel-Crafts acylation of the styrene blocks of the elastomer, followed by a hydantoin ring formation reaction, and subsequent halogenation with chlorine or bromine. Both raw and processed elastomeric materials were studied. The biocidal efficacies of the materials were demonstrated using several species of bacteria. A few applications for the technology may include prevention of disease by biocidal surgical gloves, condoms, protective clothing, food packaging, and the prevention of biofouling in elastomeric tubing.

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