METHOD FOR OBTAINING SUGAR ALCOHOLS HAVING FIVE TO SIX CARBON ATOMS
    31.
    发明申请
    METHOD FOR OBTAINING SUGAR ALCOHOLS HAVING FIVE TO SIX CARBON ATOMS 有权
    用于获得具有六个碳原子的糖醇的方法

    公开(公告)号:US20150274618A1

    公开(公告)日:2015-10-01

    申请号:US14434416

    申请日:2013-10-04

    CPC classification number: C07C29/141 C07C29/132 C07C31/26 C07D307/20 C13K1/02

    Abstract: The present invention relates to a method for obtaining a high yield of sugar alcohols containing five to six carbon atoms from cellulose-containing materials. In a first step the starting materials (for example microcrystalline cellulose, alpha-cellulose, wood and cellulose-containing residues, such as sugar cane bagasse or wood shavings) and an acid are brought into close contact with the substrates by a impregnation carried out in the liquid or gaseous phase. In addition, in a second step the starting materials impregnated with acid and preferably dried are brought into contact by the action of mechanical energy, such that the cellulose-containing materials are degraded into water-soluble products. Subsequently, in a third step, sugar alcohols having five to six carbon atoms are obtained in a high yield and in high selectivity from the water-soluble products in aqueous solution by hydrolytic hydrogenation by means of a metal-containing catalyst under hydrogen pressure.

    Abstract translation: 本发明涉及从含纤维素材料获得含有5至6个碳原子的高产率糖醇的方法。 在第一步中,通过浸渍进行初始材料(例如微晶纤维素,α-纤维素,木材和含纤维素的残渣,例如甘蔗渣或刨花)和酸与基底紧密接触 液相或气相。 此外,在第二步骤中,用酸浸渍并优选干燥的起始材料通过机械能的作用进行接触,使得含纤维素材料降解成水溶性产物。 随后,在第三步骤中,通过在氢气压力下通过含金属催化剂的水解氢化,从水溶液中的水溶性产物以高产率和高选择性获得具有5至6个碳原子的糖醇。

    Novel large ring compounds
    34.
    发明授权
    Novel large ring compounds 失效
    新型大环化合物

    公开(公告)号:US3920762A

    公开(公告)日:1975-11-18

    申请号:US46308974

    申请日:1974-04-22

    Abstract: A series of mono, bi and tricarbocyclic compounds, most of which have olefinic unsaturation in the ring, which may or may not have substituents thereon. While the bi and tricyclic rings may be unsubstituted, these compounds which have olefinic unsaturation, particularly multiple olefinic unsaturation, are polymerizable and copolymerizable in known polymerization systems. They are particularly good crosslinking agents. These compounds are further useful in the sense that they can be cleaved oxidatively, to corresponding carboxylic acids, aldehydes and/or alcohols which have known utility in the plasticizer and detergent arts. The compounds which do not have olefinic unsaturation can also be oxidatively cleaved to produce oxygenated, e.g., acid, alcohol or aldehyde, compounds having known utility.

    Process for preparing allylidenphosphoranes
    35.
    发明授权
    Process for preparing allylidenphosphoranes 失效
    制备烯丙基次磷酸的方法

    公开(公告)号:US3919325A

    公开(公告)日:1975-11-11

    申请号:US33598673

    申请日:1973-02-26

    CPC classification number: B27L11/02 C07F5/066 C07F9/5352 C07F9/5428

    Abstract: Allylidene phosphoranes are prepared by a new process comprising reacting dialkyl aluminum alkylidene amides or bis(N-dialkyl aluminum-imino)alkanes which are obtainable from saturated aliphatic nitriles or dinitriles and dialkyl aluminum hydrides with alkylidene phosphoranes R3CH PR34. The allylidene phosphoranes are useful as intermediate products in the synthesis of 1,3-dienes which include insect attracting substances and flavoring agents, and in the synthesis of 1,5-dienes such as squalene.

    Abstract translation: 通过新的方法制备烯丙基膦,其包括可从饱和脂族腈或二腈和二烷基氢化铝得到的二烷基铝亚烷基酰胺或双(N-二烷基铝 - 亚氨基)烷烃与亚烷基膦R3CH = PR34反应。 烯丙基磷烷可用作合成1,3-二烯的中间产物,其包括昆虫吸引物质和调味剂,以及合成1,5-二烯如角鲨烯。

Patent Agency Ranking