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1. US20170158623 - Xylylene dicarbamate, method for producing xylylene diisocyanate, xylylene diisocyanate, and method for reserving xylylene dicarbamate

Office
United States of America
Application Number 15410221
Application Date 19.01.2017
Publication Number 20170158623
Publication Date 08.06.2017
Grant Number 09856209
Grant Date 02.01.2018
Publication Kind B2
IPC
C07C 271/00
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
271Derivatives of carbamic acid, i.e. compounds containing any of the groups the nitrogen atom not being part of nitro or nitroso groups
C07C 271/20
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
271Derivatives of carbamic acid, i.e. compounds containing any of the groups the nitrogen atom not being part of nitro or nitroso groups
06Esters of carbamic acids
08having oxygen atoms of carbamate groups bound to acyclic carbon atoms
10with the nitrogen atoms of the carbamate groups bound to hydrogen atoms or to acyclic carbon atoms
20to carbon atoms of hydrocarbon radicals substituted by nitrogen atoms not being part of nitro or nitroso groups
CPC
C07C 271/20
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
271Derivatives of carbamic acids, i.e. compounds containing any of the groups , the nitrogen atom not being part of nitro or nitroso groups
06Esters of carbamic acids
08having oxygen atoms of carbamate groups bound to acyclic carbon atoms
10with the nitrogen atoms of the carbamate groups bound to hydrogen atoms or to acyclic carbon atoms
20to carbon atoms of hydrocarbon radicals substituted by nitrogen atoms not being part of nitro or nitroso groups
C07C 263/04
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
263Preparation of derivatives of isocyanic acid
04from or via carbamates or carbamoyl halides
C07C 265/14
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
265Derivatives of isocyanic acid
14containing at least two isocyanate groups bound to the same carbon skeleton
C07C 269/08
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
269Preparation of derivatives of carbamic acid, i.e. compounds containing any of the groups , the nitrogen atom not being part of nitro or nitroso groups
08Separation; Purification; Stabilisation; Use of additives
Applicants MITSUI CHEMICALS, INC.
Inventors Koji Takamatsu
Hideki Sone
Masaaki Sasaki
Agents Rankin, Hill & Clark LLP
Priority Data 2013-077928 03.04.2013 JP
Title
(EN) Xylylene dicarbamate, method for producing xylylene diisocyanate, xylylene diisocyanate, and method for reserving xylylene dicarbamate
Abstract
(EN)

Xylylene dicarbamate contains impurities represented by formulas (1) to (4) below at a ratio of less than 100 ppm as a total amount thereof on a mass basis.

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(In the above-described formulas (1) to (4), R represents a monovalent hydrocarbon group.).