35 results about "Methylcarbamic acid" patented technology

The invention belongs to the field of chemical synthesis, and particularly relates to a synthetic method of azetidine-2-yl (methyl) benzyl carbamate hydrochloride. According to the invention, 1-benzyl azetidine-3-alcohol is used as a basic raw material, and a series of reactions such as substitution reaction and the like are carried out to obtain the high-yield and high-purity azetidine-2-yl (methyl) benzyl carbamate hydrochloride, and the method is suitable for industrial production.

The application provides a high-transparency low-shrinkage TPU film and a preparation method thereof. The preparation raw material of the high-transparency low-shrinkage TPU film comprises the following components in parts by weight: 100 parts by weight of TPU particles, 30-60 parts by weight of polycarbonate, 0.1-0.5 parts by weight of (4-hydroxycyclohexyl)methyl) tert-butyl carbamate, 0.5-1 parts by weight of 1-(2,4-dihydroxy-3-trifluoromethyl-phenyl)-3-methyl-butan-1-one and 1-3 parts by weight of an antioxidant. The shrinkage of the TPU film is as low as 0.1% or below, the TPU film has good transparency, the light transmittance is 98.5% or above, the mechanical strength is high, and the TPU film is suitable for multiple fields such as automobiles, household appliances, electrical instruments, mechanical industry and the like.