CAS: 123-61-5; 1,3-Phenylene Diisocyanate

上下游产品

CAS号99-65-0 间二硝基苯 | CAS号201230-82-2 carbon monoxide | CAS号4930-04-5 dimethyl N,N'-(... | CAS号3027-36-9 1,3-Benzenedica... | CAS号7450-61-5 ethyl N-(3-etho... | CAS号75-44-5 光气 | CAS号108-45-2 间苯二胺 | CAS号71-43-2 苯 | CAS号3125-77-7 1,3-亚苯基二异硫氰酸 | CAS号1135-58-6 [3-(carbamoylam... | CAS号4998-28-1 Benzene,1-chlor...

Dimethyl N,N'-(1,3-Phenylene)Dicarbamate置于b-氯-1,2-苯二酚硼烷,三乙胺体系中,用 甲苯 用作溶剂,以98%的收率获得间苯二异氰酸酯
参考文献:A Simple,Convenient,And Efficient Method For The Synthesis Of Isocyanates From Urethanes
标题:A Simple,Convenient,And Efficient Method For The Synthesis Of Isocyanates From Urethanes
摘要:
Doi:10.1021/jo00106A044

专利信息

专利号:US-6924385-B2
优先权日:2002-11-18
标 题:Method for synthesis of aliphatic isocyanates from aromatic isocyanates
发明人：LETTMANN CHRISTIAN; KOHLSTRUK STEPHAN; STOCHNIOL GUIDO; SPYROU EMMANOUIL
权利人:DEGUSSA
摘要:The invention relates to a method for synthesis of aliphatic isocyanates from aromatic isocyanates in substantially 3 stages. In particular, the invention relates to a method for synthesis of bis{4-isocyanatocyclohexyl}methane (H 12 MDI) from bis{4-isocyanatophenyl}methane (MDI). More especially, the invention relates to a method for synthesis of H 12 MDI with a trans-trans isomer content of <30%, preferably of <20%, particularly preferably of 5 to 15%.

专利号:US-2024368099-A1
优先权日:2022-01-18
标 题:Methods for the synthesis of di(hydroxymethyl)tetrahydrofuran and its application in polyesters and polyurethanes
发明人：SPIEGELBERG BRIAN; BRANDT ADRIAN; BECK HORST; KUX ALEXANDER; TIN SERGEY; DE VRIES JOHANNES GERARDUS
权利人:HENKEL AG & CO KGAA
摘要:The present invention relates to the synthesis of di(hydroxymethyl)tetrahydrofuran (DHMTHF) and the preparation of trans-enriched mixtures of DHMTHF. The invention further refers to polyester polyols which are obtained by reaction of cis/trans DHMTHF mixtures with a dicarboxylic acid. The invention further relates to polyurethanes and compositions containing a polyester polyol comprising DHMTHF, in particular to such polyurethane-containing (adhesive) compositions.

专利号:US-4472568-A
优先权日:1981-11-12
标 题:Process for the preparation of polyamines from N-monoaryl-N',N'-dialkyl urea compounds and their use for the synthesis of polyurethanes
发明人：RASSHOFER WERNER; GROEGLER GERHARD
权利人:BAYER AG
摘要:This invention relates to an improved process for the preparation of aromatic polyamines containing urethane and/or biuret and/or urea and/or isocyanurate groups and preferably also ether groups by the hydrolysis of poly-N-monoaryl-N',N'-dialkyl urea compounds (1-aryl-3,3-dialkyl ureas). The ureas are obtained by the reaction of secondary aliphatic, cycloaliphatic or saturated heterocyclic amines with divalent to tetravalent isocyanate compounds containing isocyanate end groups attached to aromatic residues. The ureas correspond to the general formula: wherein R1, R2 denote alkyl or cycloalkyl groups, or together form a ring and A denotes a divalent to tetravalent residue attached to the ureas by aromatic groups. Hydrolysis is carried out in the presence of water and up to two equivalents of a base containing hydroxide ions and/or up to two equivalents of a compound containing tertiary amino groups, optionally in the presence of solvents. The use of the polyamines obtained by this process for the synthesis of polyurethanes is also described.

专利号:EP-4428168-A1
优先权日:2023-03-08
标 题 :Polyurethane/oligomeric urethane synthesis method by radiation
发明人：AKBULUT HÃœSEYIN; ÇEL KBA SENA; ENADA SEHER; U AKLI MÃœGE; DEM RBAY DUYGU
权利人:CHT TURKEY KIMYA SANAYI VE TICARET A S
摘要:In particular, the invention relates to the synthesis of radiation-curable polyurethane/oligomeric urethane dispersions of anionic and cationic characters, containing neutralization techniques characterized by the selection of counter ions as monomers and/or agents which can be polymers acting as promoters under radiation, to a radiation polyurethane/oligomeric urethane synthesis method that enables the creation of radiation curable binder systems without using cosolvents, surfactants, emulsifiers, defoamers, stabilizers and additives, wherein all components of the radiation-curable binder systems can be polymerized.

专利号:US-6538094-B2
优先权日:1998-12-21
标题:Process for synthesis of allophanate compounds and compositions including the product thereof
发明人：TAZZIA CHARLES L
权利人:BASF CORP
摘要:The invention provides a process for preparing an allophanate-containing compound in the presence of a metal catalyst and a tertiary amine. In a preferred process, the tertiary amine compound also has a hydroxyl group. The hydroxyl group can react with the isocyanate functionality. Also disclosed is a process in which an allophanate-containing compound is prepared with copper acetate monohydrate as a catalyst. The allophanate-containing compound is used as a curing agent in coating compositions, particularly electrocoat coating compositions. The coating compositions are used to coat articles.

专利号:US-4341898-A
优先权日:1981-05-18
标题:Synthesis of isocyanates from nitroalkanes
发明人：MILLIGAN BARTON; PINSCHMIDT JR ROBERT K
权利人:AIR PROD & CHEM
摘要:A process for the preparation of aromatic isocyanates from nitroalkanes. A nitromethyl aromatic compound of the general formula: wherein R and R1 represent hydrogen, halogen, a C1-C5 alkyl radical, a C1-C4 alkoxy radical, nitro, isocyanato, an alkoxycarbonylamino, or nitromethyl radical, with R and R1 being the same or different, is heated in the presence of an effective amount of a Lewis acid or Bronsted acid substance to effect a dehydrogenation-isomerization reaction to yield an aromatic isocyanate of the general formula: The product of the reaction may be recovered as the aromatic isocyanate or the alcohol adduct, a carbamate.