102771-74-4

Basic information

• Product Name: 2-isocyanato-1-(isocyanatomethyl)-1,5,5-trimethylcyclohexane
• CAS NO: 102771-74-4
• Molecular Formula: C₁₂H₁₈N₂O₂
• Molecular Weight: 222.2835
• EINECS: 223-861-6
• Mol File: 102771-74-4.mol

Chemical Properties

• Boiling Point: 286.9°C at 760 mmHg
• Flash Point: 116°C
• Density: 1.06g/cm³
• Vapor Pressure: 0.00257mmHg at 25°C
• Refractive Index: 1.519
• CAS DataBase Reference: 2-isocyanato-1-(isocyanatomethyl)-1,5,5-trimethylcyclohexane(CAS DataBase Reference)
• NIST Chemistry Reference: 2-isocyanato-1-(isocyanatomethyl)-1,5,5-trimethylcyclohexane(102771-74-4)
• EPA Substance Registry System: 2-isocyanato-1-(isocyanatomethyl)-1,5,5-trimethylcyclohexane(102771-74-4)

Safety Data

• Hazardous Substances Data: 102771-74-4(Hazardous Substances Data)

Upstream product

• 2855-13-2 3-aminomethyl-3,5,5-trimethylcyclohexylamine 
• 75-44-5 phosgene 
• 1068656-79-0 3-((4-nonylphenyl)oxycarbonylamino-methyl)-3,5,5-trimethylcyclohexylcarbamic acid (4-nonylphenyl) ester 
• 78632-23-2 3-ureidomethyl-3,5,5-trimethylcyclohexyl urea 
• 1266555-00-3 3-((p-dodecylphenyloxy)carbonylamidomethyl)-3,5,5-trimethylcyclohexyl carbamic acid (p-dodecylphenyl) ester 
• 1266554-93-1 3-((4-(α,α-dimethylbenzyl)phenoxy)carbonylaminomethyl)-3,5,5-trimethylcyclohexyl carbamic acid (4-(α,α-dimethylbenzyl)phenyl)ester 
• 1266554-97-5 3-((4-(1,1,3,3-tetramethylbutyl)phenoxy)carbonylamino-methyl)-3,5,5-trimethylcyclohexyl carbamic acid (4-(1,1,3,3-tetramethylbutyl)phenyl) ester 
• 78-59-1 3,5,5-Trimethylcyclohex-2-en-1-one 
• 7027-11-4 isophoronenitrile 
• 79848-85-4 3-cyano-3,5,5-trimethylcyclohexaneimine 
• 124-38-9 carbon dioxide 
• 102-09-0 bis(phenyl) carbonate 
• 156307-80-1 3-((2-naphthyl)carbonylamino-methyl)-3,5,5-trimethylcyclohexyl carbamic acid (2-naphthyl) ester 
• 439680-92-9 3-(nonyloxycarbonylamino-methyl)-3,5,5-trimethylcyclohexyl carbamic acid nonyl ester 

Downstream Products

• 129918-80-5 ((1R,3R)-3-{[1-(3,5-Dimethoxy-phenyl)-1-methyl-ethoxycarbonylamino]-methyl}-3,5,5-trimethyl-cyclohexyl)-carbamic acid 1-(3,5-dimethoxy-phenyl)-1-methyl-ethyl ester 
• 391894-55-6 C₂₀H₃₂N₄O₁₀ 
• 39573-23-4 isophorone diacrylamide 
• 1619998-66-1 C₃₀H₄₆N₄O₈ 
• 1621165-99-8 C₁₅H₂₂N₂O₅ 
• 1621166-00-4 C₁₅H₂₂N₂O₅ 
• 1499-46-3 histidine methyl ester 

Relevant articles and documents

METHOD FOR PRODUCING CARBAMATE AND METHOD FOR PRODUCING ISOCYANATE

The present invention provides a method for producing a carbamate that includes a step (1) and a step (2) described below: (1) a step of producing a compound (A) having a urea linkage, using an organic primary amine having at least one primary amino group per molecule and at least one compound selected from among carbon dioxide and carbonic acid derivatives, at a temperature lower than the thermal dissociation temperature of the urea linkage; and(2) a step of reacting the compound (A) with a carbonate ester to produce a carbamate.

Method for preparing isocyanate with low hydrolytic chlorine content by gas phase method

The invention relates to a method for preparing isocyanate with low hydrolytic chlorine content by a gas phase method, which comprises the following steps of: carrying out phosgenation reaction on corresponding amine and stoichiometric excess phosgene in a reaction zone in the presence or absence of an inert medium; wherein the reaction conditions are selected such that at least the reaction components amine, isocyanate and phosgene are gaseous under these conditions, and feeding of at least one gas stream comprising amine and at least one gas stream comprising phosgene into the reaction zone, and introducing of a carbon dioxide stream in a quenching zone at the rear end of the reaction zone are carried out, and the molar content of the carbon dioxide stream is less than 60% of the molar weight of the phosgene stream, so that the isocyanate with low hydrolytic chlorine content can be obtained more easily, the product yield is improved, and the investment cost of the device is reduced.

ISOCYANATE PRODUCTION METHOD

An isocyanate production method according to the present invention is a method in which an isocyanate is produced by subjecting a carbamate to thermal decomposition, and includes: a step of preparing a mixture liquid containing the carbamate, an inactive solvent and a polyisocyanate compound; a step of conducting a thermal decomposition reaction of the carbamate by continuously introducing the mixture liquid into a thermal decomposition reactor; a step of collecting a low-boiling decomposition product by continuously extracting the low-boiling decomposition product in a gaseous state from the reactor, the low-boiling decomposition product having a boiling point lower than the polyisocyanate compound; and a step of collecting a high-boiling component by continuously extracting, from the reactor, a liquid phase component which is not collected in a gaseous state at the step of collecting the low-boiling decomposition product.

PRODUCTION METHOD OF ISOCYANATE

PROBLEM TO BE SOLVED: To provide a production method of isocyanate for producing isocyanate continuously by suppressing a side reaction. SOLUTION: A production method of isocyanate is a method for producing isocyanate by pyrolysis of carbamate. The method includes a pyrolysis process for performing a pyrolysis reaction of carbamate by introducing continuously a mixed liquid containing carbamate and a compound (A) having a specific structure into a pyrolysis reactor, a low-boiling point decomposition product recovery process for extracting, continuously from the pyrolysis reactor in a gas phase, a low-boiling point decomposition product having a lower normal boiling point than the compound (A), and a high-boiling point component recovery process for extracting, continuously from the pyrolysis reactor as a high-boiling point component, a liquid phase component not recovered in the gas phase in the low-boiling point decomposition product recovery process. SELECTED DRAWING: None COPYRIGHT: (C)2020,JPOandINPIT

METHOD FOR PRODUCING ISOCYANATE

PROBLEM TO BE SOLVED: To provide a method for producing isocyanate that suppresses a side reaction and continuously produces isocyanate. SOLUTION: The present invention provides a method for producing isocyanate by pyrolysis of carbamate, the method including: a pyrolysis step in which a liquid mixture containing carbamate and at least one compound (A) selected from a phenolic polymer having a repeating unit represented by general formula (4) and a phenol represented by general formula (5) is continuously introduced into a pyrolytic reactor for a pyrolytic reaction of carbamate; a low-boiling-point pyrolytic product recovery step in which a low-boiling-point pyrolytic product having a normal boiling point lower than that of the compound (A) is continuously extracted in a gas state from the pyrolytic reactor; and a high-boiling-point component recovery step in which a liquid phase component, which has not been recovered in a gas state in the low-boiling-point pyrolytic product recovery step, is continuously extracted as a high-boiling-point component from the pyrolytic reactor. SELECTED DRAWING: None COPYRIGHT: (C)2020,JPOandINPIT

METHOD FOR PRODUCING ISOCYANATE

PROBLEM TO BE SOLVED: To provide a method for producing isocyanate that suppresses a side reaction and continuously produces isocyanate. SOLUTION: The present invention provides a method for producing isocyanate by pyrolysis of carbamate, the method including: a pyrolysis step in which a liquid mixture containing carbamate and at least one compound (A) selected from a compound represented by general formula (4), a compound represented by general formula (5) and a compound represented by general formula (6) is continuously introduced into a pyrolytic reactor for a pyrolytic reaction of carbamate; a low-boiling-point pyrolytic product recovery step in which a low-boiling-point pyrolytic product having a normal boiling point lower than that of the compound (A) is continuously extracted in a gas state from the pyrolytic reactor; and a high-boiling-point component recovery step in which a liquid phase component, which has not been recovered in a gas state in the low-boiling-point pyrolytic product recovery step, is continuously extracted as a high-boiling-point component from the pyrolytic reactor. SELECTED DRAWING: None COPYRIGHT: (C)2020,JPOandINPIT

Method for preparing polyisocyanate through photochemical reaction, and method for preparing waterborne polyurethane resin

The invention especially relates to a method for preparing polyisocyanate through a photochemical reaction, and a method for preparing waterborne polyurethane resin, belonging to technical field of waterborne polyurethane resin. The method for preparing the waterborne polyurethane resin comprises a step of carrying out a polymerization reaction on raw materials containing polyisocyanate, oligomerpolyol, a chain extender and a hydrophilic agent to obtain the waterborne polyurethane resin, wherein the content of benzophenone impurities in the polyisocyanate is less than or equal to 0.045 wt%. By controlling the content of benzophenone impurities in the preparation process of polyisocyanate, the yellowing resistance of the waterborne polyurethane resin can be effectively improved, and harm to the qualified rate of downstream products caused by existence of the impurities in the waterborne polyurethane resin is also reduced.

Method for preparing IPDI (isophorone diisocyanate)

The invention discloses a method for preparing IPDI (isophorone diisocyanate). The method comprises the following steps: (1) isophorone and hydrogen cyanide are subjected to a reaction in the presenceof a catalyst to obtain isophorone nitrile; (2) isophorone nitrile obtained in step (1), ammonia and hydrogen are subjected to a reaction in the presence of a catalyst to obtain isophorone diamine; (3) isophorone diamine is subjected to a phosgenation reaction to obtain IPDI, wherein the content of impurities containing secondary amine groups in isophorone diamine subjected to the phosgenation reaction in step (3) is smaller than or equal to 0.5wt%, preferably smaller than or equal to 0.3wt%, and more preferably smaller than or equal to 0.1wt%. By means of the method, content of hydrolyzed chlorine in the IPDI product can be effectively reduced, the yellowing resistance of the product is effectively improved, and the harm that downstream products are unqualified due to existence of hydrolyzed chlorine in the product is reduced.

Preparation method of isophorone diisocyanate

The invention relates to a preparation method of isophorone diisocyanate. Catalyst polyoxometallate and a solvent are added into a reaction vessel, then raw materials comprising isophorone diamine andphenylsilane, an acid-binding agent and a dehydrating agent are added, uniform mixing is carried out, finally, gaseous carbon dioxide is added, magnetic stirring is carried out for a sufficient reaction at a certain temperature, and a product is obtained. The method has the advantages that Anderson type heteropolyacid is adopted as a catalyst, the catalyst requires mild reaction conditions and high specificity and selectivity, and is recyclable and friendly to the environment, the cleanability of an industrial reaction is improved, the technological economy is improved, the manufacturing costand the generation of three wastes are reduced, the environmental protection pressure is reduced, and the industrial production is facilitated.

Method for preparing isocyanate by using amine and carbonyl fluoride

The invention discloses an efficient synthesis method for preparing corresponding isocyanate by enabling carbonyl fluoride to directly react with amine. The efficient synthesis method mainly comprises the following two steps: carrying out acylation reaction on the amine and the carbonyl fluoride according to a preferable proportion in an anhydrous inertial organic solvent under a sealed environment and a proper reaction condition, thus generating an intermediate-carbamyl fluoride; (2) carrying out dehydrofluorination on the intermediate-carbamyl fluoride under normal pressure and the proper reaction condition, thus obtaining the target isocyanate. During a reaction process, addition of a catalyst is not needed, the reaction conditions are mild, excessive carbonyl fluoride and a used solvent during the reaction process can be efficiently recycled and reused, and a by-product HF can be commercially sold after being collected and refined.