Polyurethane foam catalyst

Diorganotin dichlorides, in diorganotin preparation, 24 820 Diorganotin dihalides, 24 820 Diorganotin esters, 24 820 Diorganotin mercaptocarboxylates, as polyurethane foam catalysts,... 

As indicated above, the new applications of organolead have been fostered largely through the interest of ILZRO. The most promising new applications are in the fields of marine antifouling paints, marine borer repellants for wood, antiwear additives for lubricants, polyurethan foam catalysts, and molluscicides for bilharzia control in tropical areas. 

Foaming agents Polyurethane foam catalysts Foam processing... 

Bulab 600, Polyurethane foam catalyst, Buckman Laboratories, Inc. 

Uses Intermediate for mfg. of quaternary ammonium compds. for biocides, textile chemicals, oil field chemicals, amine oxides, betaines, polyurethane foam catalysts, epoxy curing agents, fabric softeners, disinfectants, laundry detergents Properties APHA 30 max. d. liq., fatly amine odor sp.gr. 0.81 f.p. -38.6 C amine no. 197 flash pt. (PM) 166 C F recaution Conosive... 

Uses Antistat, emulsifier, hair conditioner in cosmetics chemical intermediate, raw material for surfactants, biocides, textile chems., oil field chems., amine oxides, betaines polyurethane foam catalyst epoxy curing agent flotation agent (quartz, feldspar) electrophoretic paint additive oiliness additive in lubricants acid scavenger in petrol, prods, vise, index improver for lubricating oils Regulatory Canada DSL... 

Sorbitol is manufactured by the reduction of glucose in aqueous solution using hydrogen with a nickel catalyst. It is used in the manufacture of ascorbic acid (vitamin C), various surface active agents, foodstuffs, pharmaceuticals, cosmetics, dentifrices, adhesives, polyurethane foams, etc. 

Other Octoate Uses. Metal octoates are also used as driers in printing inks. Another appHcation of octoates includes the use of the aluminum salt to gel paint. Stannous, dibutyltin, and bismuth carboxylates find appHcation as catalysts in polyurethane foam appHcations in order to obtain a reaction efficiency suitable for industrial production. In polyurethane foam manufacture the relative rate of polymeriza tion and gas foaming reactions must be controlled so that the setting of the polymer coincides with the maximum expansion of the foam. 

Homogeneous catalysis by lin compounds is also of great indusirial importance. The use of SnCU as a Friedel-Crafts catalyst for homogeneous acylation, alkylation and cyclizaiion reactions has been known for many decades. The most commonly used industrial homogeneous tin catalysis, however, are the Sn(ll) salts of organic acids (e.g. acetate, oxalate, oleale, stearate and ocToate) for the curing of silicone elasloniers and, more importantly, for the production of polyurethane foams. World consumption of tin catalysts for the.se Iasi applications alone is over 1000 tonnes pa. 

The Ford hydroglycolysis process is an example of a combined approach for die depolymerization of PURs. In a reactor, polyurethane foam is reacted with a mixture of water, diethylene glycol, and alkali metal hydroxides at high temperature to form polyols. When sodium hydroxide is added as a catalyst, a cleaner polyol is formed because all of the carbamates and ureas in the product are converted into amines and alcohols by hydrolysis.33... 

Experimental Materials. All the data to be presented for these illustrations was obtained from a series of polyurethane foam samples. It is not relevant for this presentation to go into too much detail regarding the exact nature of the samples. It is merely sufficient to state they were from six different formulations, prepared and physically tested for us at an industrial laboratory. After which, our laboratory compiled extensive morphological datu on these materials. The major variable in the composition of this series of foam saaqples is the aaK>unt of water added to the stoichiometric mixture. The reaction of the isocyanate with water is critical in determining the final physical properties of the bulk sample) properties that correlate with the characteristic cellular morphology. The concentration of the tin catalyst was an additional variable in the formulation, the effect of which was to influence the polymerization reaction rate. Representative data from portions of this study will illustrate our experiences of incorporating a computer with the operation of the optical microscope. 

Used industrially as a chemical intermediate in the manufacture of pesticides and phos-phosilicate glass. Used as a gasoline additive, catalyst, and as a fireproofing agent in the production of textiles and flame-retardant polymers for polyurethane foams. 

Diorganotins Catalysts for silicones, polyurethane foams polyvinyl chloride stabilizers precursor for forming Sn02 films on glass antihelminthics for poultry lubricating oil additives (Piver 1973 CEC 1978 WHO 1980 Chau etal. 1984 Blunden etal. 1985 Blunden and Chapman 1986 USPHS 1992). 

Uses Intermediate for pharmaceuticals, dyestuffs, emulsifying agents, and rubber accelerators solvent for dyes, resins, and oils catalyst for making polyurethane foams. 

The aromatic polyols resulting from the reaction can be mixed with commercial polyols, blowing agents, surfactants, catalysts, and polymeric isocyanates to produce a rigid polyurethane foam. n compared w control foams produced from commercially available polyester polyols, the foams produced from reclaimed materials were found to have essentially the same properties. 

The ring opening can be carried out using alcohols, carboxylic acids, or other nucleophiles in the presence of a Lewis acid catalyst, or optionally with hydrogen or water at elevated temperatures and pressures (150-250°C, 1-100 bar) to provide a highly functionalized polyol, which has been demonstrated in rigid polyurethane foams [115]. 

Polyurethane foam Natural oil polyol, water, and surfactants were weighed into a 1 quart metal cup and premixed for 15 seconds at 1800 rpm using a pin type mixer. The catalyst was added and the mixture stirred an additional 15 seconds at 1800 rpm. The polyisocyanate was then added and the mixture stirred at 2400 rpm for 3 seconds and immediately transferred to a 15 x 15 x 10 wooden box lined with a polyethylene bag. The buns were allowed to cure overnight before testing. 

In the absence of redox catalysts, no grafting was observed even after 24 hours contact of the polyurethane foam with the monomer. 

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