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References in periodicals archive ?
1] decreased with the copolymerization reaction proceeding, and the band consists of the N--H stretching vibration of urethane and the O--H stretching vibration of unreacted phenolic hydroxyl groups.
They have the balance of flexibility and hardness of a urethane system but, due to very little or no three-dimensional crosslinking, chemical resistance is worse than standard urethane systems.
UNI's bio-urethanes serve as a direct replacement of phenolic urethane and can be used with current molding equipment in both nobake and coldbox processes.
Complete urethane processing lines may include bulk storage and blending, including fiber or filler; mold carriers, including clamps, turntables, and conveyor systems; auxiliary robotics, ovens, hydraulics, and materials-handling equipment; and SRIM preforming systems.
The expertise required to make a successful split-in-half urethane coupling is not limited to the molding process.
While not a new material, urethane has grown in use because its specifications can be "dialed up" to fit the task at hand.
Urethane is a chemical substance that forms naturally during the fermentation process.
The report on tainted alcohol, released last week, lists urethane levels in more than 1,000 alcoholic beverages as determined by government and beverage industry laboratories.
Stanley Levy, BioSolar's chief technology officer, who spearheaded the selection process, commented, "After reviewing a number of major manufacturers, we concluded that Stevens Urethane was the best fit for BioSolar.
com - Bailey-Parks Urethane has added a three-axis Haas SL-20 horizontal milling machine to its machine shop.
The price increase will affect product ranges like NeoCryl waterborne acrylics and acrylic beads, NeoPac waterborne urethane-acrylics, NeoRez waterborne urethanes, Uraflex / Solucote solventborne urethanes and Uradil waterborne polyesters and alkyds.