CTLA polymer

Dicyclopentadiene, dipentene, styrene, CTLA polymer, and methyl-cyclopentadiene dimer were used as modifiers. These modifiers are all available in commercial quantities at 5-12 cents/lb. All contain unsaturated double bonds suitable for direct reaction with sulfur. The materials used in this investigation were from the following sources ... 

CTLA polymer-sulfur mixtures produced negligible penetration at 120-140°C regardless of concentration. All mixtures with CTLA polymer were extremely viscous. Above 140 °C, the mixtures decomposed and evolved considerable hydrogen sulfide gas. 

Discussion. Chemically modified sulfur was superior to elemental sulfur for direct penetration into soil test specimens. Except for the CTLA polymer, the modifiers promoted penetration. 

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