Catalyst blowing

Catalyst batch B was separated into three parts B w ox was activated and tested immediately after preparation, Biowox+imo was activated immediately after preparation but activity tests were performed one month later, and Bimo+bw-ox was activated and tested one month after preparation. During the waiting period, catalysts were stored in foil wrapped containers under air in a desiccator. The data for catalysts Aiowox and Biowox in Figure 3 and Table 1 show that both the CO oxidation rates and Eapp values were highly reproducible between batches, provided that the catalysts are activated and tested soon after preparation. Catalyst Blow ox+imo was a factor of two less active than the freshly prepared and activated Biow-ox catalyst Bimo+iow ox showed similar decreases in activity. 

The major raw materials for making isocyanate-based foams include the following compounds polyisocyanates, polyols, catalysts, blowing agents, surfactants, epoxides, and flame retardants. 

Use Bonding agents, polymer process aids, catalysts, blowing agent activators, corrosion inhibitors, dispersing agents. 

The chemical components (Table II) in integral skin, rigid urethane foams are similar to those used in conventional, high density, rigid urethane wood foams, and include polymeric isocyanates catalysts blowing agents surfactants and polyols. 

This system is made up of three components PUF, a protective cover, and a vapor barrier. PUF forms a closed cell waterproofing barrier and provides insulation. The foam is made from the combination of two materials, a resin (containing polyol, catalyst, blowing agent, surfactant. 

Diethyl Ethylphosphonate. A Hquid compound introduced for appHcations similar to those of DMMP is diethyl ethylphosphonate [78-38-6] CgH O P. This material is claimed to be less susceptible to undesirable interactions with haloaHphatic components, such as blowing agents, or with amine catalysts. 

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