0
Want this question answered?
Be notified when an answer is posted
Add your answer:
Earn +20 pts
methylene diphenyl diisocyanate manufacturing process?
Methylene diphenyl diisocyanate, often abbreviated as MDI, is known as an aromatic diisocyanate.
Are toluene diisocyanate and hexamethylene diisocyanate hazardous air pollutants or haps as per the us-epa?
Yes
What is the hs code of toluene diisocyanate?
The Harmonized System (HS) code for toluene diisocyanate is 2929.10.00.
Can you use diisocyanate in swimming pools?
yes u can
What has the author Howard E Momberg written?
Howard E. Momberg has written: 'A comparison of two methods for the determination of toluene diisocyanate in air' -- subject(s): Toluene 2,4-Diisocyanate, Analysis
How do you pronounce diisocyanate?
It is pronounced as "dye-uh-so-sigh-uhn-ate."
What is the manufacturing method of foam?
Most foam is made from polyurethane.They start by making polyurethane. To make it, you mix a polyol with a diisocyanate. There are many polyols. There are two important isocyanates, toluene diisocyanate and methylene diisocyanate. (Two other diisocyanates are used to make urethane paint.) The choice of polyol governs whether the foam is hard or soft, and how soft or hard it is.Next, you mix in a blowing agent. The first blowing agent was water, which forms CO2 in contact with diisocyanate. They don't like making insulating foam with water, because the foam doesn't insulate as well.
What is the method of manufacture?
Most foam is made from polyurethane.They start by making polyurethane. To make it, you mix a polyol with a diisocyanate. There are many polyols. There are two important isocyanates, toluene diisocyanate and methylene diisocyanate. (Two other diisocyanates are used to make urethane paint.) The choice of polyol governs whether the foam is hard or soft, and how soft or hard it is.Next, you mix in a blowing agent. The first blowing agent was water, which forms CO2 in contact with diisocyanate. They don't like making insulating foam with water, because the foam doesn't insulate as well.
Are there any isomers of toluene?
Yes, toluene has three isomers: ortho-toluene, meta-toluene, and para-toluene. These isomers have different arrangements of the methyl group relative to the benzene ring.
What are the monomers in spandex?
Spandex polymers are composed of three different monomers. Dialcohol monomers make up the rubbery, soft part of the polymer while diamine and diisocyanate monomers make up the rigid, hard part of the polymer. The three monomers of spandex therefore are dialcohol, diamine and diisocyanate.
What does dimeryl means in dimeryl diisocyanate?
The name apparently comes from "dimer" and "-yl" as in 'alkyl' or 'aryl,' common classes of organic radical functional groups. According to specification, 'dimeryl' is a hydrocarbon with 36 carbon atoms and two radicals. In dimeryl diisocyanate (DDI), isocyanate groups are attached to both functional points of the dimeryl biradical. There is apparently no such thing as "merylic acid".
What is two-component polyurethane?
Two-component polyurethane refers to a type of polyurethane material that is composed of two separate components - typically a resin and a hardener that are mixed together in specific ratios before application. This type of polyurethane often offers excellent durability, chemical resistance, and mechanical properties, making it commonly used in coatings, adhesives, sealants, and foams.
