Chemicals - kalpasrusti.com

Olefin Metathesis as the substitute for Formaldehyde to Crosslink Cellulose

The Challenge / Concern: Croslinking of cellulose is desired for various reasons such as to increase strength of fabric or paper. Classical cellulose cross linking systems, such as compounds using N-methylol chemistry, release formaldehyde, known to be a human carcinogen. Hence a safer and effective alternative is desired. Brief (and non-confidential) Solution Cellulose modifications …

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Biogas Enrichment by Moderate Pressure Scrubbing for Optimum Utilization

Energy / Biotech, Chemicals, Process

The Challenge / Concern: Efficiency of utilization and handling of biogas depends on its methane content. Typical biogas has 35% inert content of primely carbon dioxide. About 65% methane leads to increased handling costs and heavier equipments. . Also, biogas has lower calorific value and lower burn rate due to the inert content. Brief (and …

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Monomer content reduction in finished polymer

Polymers / Chemicals, Manufacturing, Monomer, Synthesis

The Challenge/Concern Typical polymerization (especially free radical) reaction rarely achieve the completion, leading to the presence of unreacted residual monomer in the polymer. Besides affecting polymer properties, residual monomers are also often toxic and affect compatibility. A process for production of four different polymers having very low levels of residual monomers was desired. Brief (and …

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