Invention Grant
US5491256A Composition of matter for aliphatic-aromatic ureas, biurets, and
allophanates as nitric oxide reducing agents in diesel emissions
失效
脂肪族 - 芳香脲，缩二脲和脲基甲酸酯作为柴油机排放中一氧化氮还原剂的物质组成
- Patent Title: Composition of matter for aliphatic-aromatic ureas, biurets, and allophanates as nitric oxide reducing agents in diesel emissions
- Patent Title (中): 脂肪族 - 芳香脲，缩二脲和脲基甲酸酯作为柴油机排放中一氧化氮还原剂的物质组成
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Application No.: US222509Application Date: 1994-04-04
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Publication No.: US5491256APublication Date: 1996-02-13
- Inventor: Thomas F. Derosa , Rodney L. Sung , Benjamin J. Kaufman
- Applicant: Thomas F. Derosa , Rodney L. Sung , Benjamin J. Kaufman
- Applicant Address: NY White Plains
- Assignee: Texaco Inc.
- Current Assignee: Texaco Inc.
- Current Assignee Address: NY White Plains
- Main IPC: C07C275/60
- IPC: C07C275/60 ; C07C269/00
Abstract:
A composition of matter comprising ureas, biurets or allophanates structurally represented, respectively, by ##STR1## where R is hydrogen or a (C.sub.1 -C.sub.50) linear or branched aliphatic, alkenyl, alkynyl or aryl hydrocarbon; ##STR2## where R is hydrogen or a (C.sub.1 -C.sub.50) linear or branched aliphatic, alkenyl, alkynyl or aryl hydrocarbon; or ##STR3## where R is hydrogen or a (C.sub.1 -C.sub.50) linear or branched aliphatic, alkenyl, alkynyl or aryl hydrocarbon.
Abstract(Chinese):
其中R是氢或（C1-C50）直链或支链的脂族，烯基，炔基或芳基烃，结构上分别表示的脲，缩二脲或脲基甲酸酯的组合物; 其中R是氢或（C1-C50）直链或支链的脂族，烯基，炔基或芳基烃; 或者其中R是氢或（C1-C50）直链或支链脂族，烯基，炔基或芳基烃的。
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