Search International and National Patent Collections
Refine Search
Query Tree
Save query
A private query is only visible to you when you are logged-in and can not be used in RSS feeds
Results 1-10 of 2,394 for Criteria:CHEM:(FBPFZTCFMRRESA-UHFFFAOYSA-N) Office(s):all Language:en Stemming: false
Filters
1 2 3 4 5 6 7 8 9 10 11 12
Page: / 240
Analysis
List Length
TitleCtrPubDate
Appl.NoApplicantInventorInt.Class
METHOD OF CATALYTIC CONVERSION OF CELLULOSE IN HEXITOLS
RU10.11.2013
2012143179/04Филатова Анастасия Евгеньевна (RU)
C07C 31/26
C CHEMISTRY; METALLURGY
07
ORGANIC CHEMISTRY
C
ACYCLIC OR CARBOCYCLIC COMPOUNDS
31
Saturated compounds having hydroxy or O-metal groups bound to acyclic carbon atoms
18
Polyhydroxylic acyclic alcohols
26
Hexahydroxylic alcohols
FIELD: chemistry. SUBSTANCE: invention relates to field of processing renewable raw material (in particular, cellulose) into raw material for chemical synthesis and biofuels. Method of catalytic conversion of cellulose in hexitols includes carrying out process of hydrolytic hydration of cellulose for 3-7 minutes at temperature 240-250°C under partial pressure of hydrogen 55-65 atm and with mixing of reaction medium in presence of ruthenium catalyst, according to invention as substrate for ruthenium catalyst applied is hypercrosslinked polystyrene of MN 270 grade, and content of ruthenium in catalyst constitutes from 1.0 to 1.5 wt % of catalyst weight. Mixing of reaction mixture is realised by propeller mixer, numbers of turns of which constitutes 580-620 rev/min. EFFECT: increased method efficiency. 2 cl, 16 ex

Ifosfamide-mesna lyophilizate and process for its preparation
US25.09.1990
07325883Asta Pharma AGSauerbier Dieter
A61K 9/00
A HUMAN NECESSITIES
61
MEDICAL OR VETERINARY SCIENCE; HYGIENE
K
PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES
9
Medicinal preparations characterised by special physical form

An ifosfamide-mesna lyophilizate consists substantially of ifosfamide, 0.1-1.0 parts by weight of mesna and 0.1 to 17 parts by weight of hexitol. The product is obtained by freeze drying an aqueous or aqueous-ethanolic solution of ifosfamide and mesna.


Process for preparing carboxylic acid esters of hexitols
US31.12.1985
06548286Hoechst AktiengesellschaftStuhler Herbert
C09F 7/10
C CHEMISTRY; METALLURGY
09
DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
F
NATURAL RESINS; FRENCH POLISH; DRYING-OILS; DRIERS (SICCATIVES); TURPENTINE
7
Chemical modification of drying-oils
10
by re-esterification

A process is described for preparing carboxylic acid esters of hexitols by rapidly heating the hexitol and carboxylic acid to 210.degree. to 250.degree. C. in the presence of alkaline catalysts, continuing the esterification reaction at this temperature, while simultaneously driving off the water formed, until an acid number of 2 to 15 has been reached, and then rapidly cooling down to at least 145.degree. C. This process produces hexitol carboxylates which are essentially free of anhydro compounds and have good color quality. The hexitol carboxylates are surface-active substances, in particular high-grade emulsifiers and lubricants.


Process for the preparation of 1,5-dideoxy-1,5-imino hexitols from oximes or imines
US30.10.2003
10439033Board of Trustees of Michigan State UniversityHollingsworth, Rawle I.
C07C 251/00
C CHEMISTRY; METALLURGY
07
ORGANIC CHEMISTRY
C
ACYCLIC OR CARBOCYCLIC COMPOUNDS
251
Compounds containing nitrogen atoms doubly- bound to a carbon skeleton

A process for the preparation of 1,5-dideoxy-1,5-imino hexitols of a hexose sugars from novel hydroxyl protected oxime intermediates. The process includes formation of a lactam which is reduced to the hexitol. The hexitols are useful as drugs.


Process for the preparation of 1,5-dideoxy-1,5-imino hexitols from oximes or imines
US07.02.2002
09970866Board of Trustees operating Michigan State UniversityHollingsworth, Rawle I.
C07C 69/34
C CHEMISTRY; METALLURGY
07
ORGANIC CHEMISTRY
C
ACYCLIC OR CARBOCYCLIC COMPOUNDS
69
Esters of carboxylic acids; Esters of carbonic or haloformic acids
34
Esters of acyclic saturated polycarboxylic acids having an esterified carboxyl group bound to an acyclic carbon atom

A process for the preparation of 1,5-dideoxy-1,5-imino hexitols of a hexose sugars from novel hydroxyl protected oxime intermediates. The process includes formation of a lactam which is reduced to the hexitol. The hexitols are useful as drugs.


이소이다이드의 제조 방법
KR24.05.2018
1020187009236아처 다니엘 미드랜드 캄파니마, 치쳉
C07D 493/04
C CHEMISTRY; METALLURGY
07
ORGANIC CHEMISTRY
D
HETEROCYCLIC COMPOUNDS
493
Heterocyclic compounds containing oxygen atoms as the only ring hetero atoms in the condensed system
02
in which the condensed system contains two hetero rings
04
Ortho-condensed systems
이소이다이드의 제조 방법이 제공되며, 본 방법에서는 덱스트로스 공급물을 먼저, 수소의 존재 하에서 그리고 이중 목적 단일 촉매의 추가의 존재 하에서 에피머화와 수소화의 조합에 의해 이디톨-풍부 헥시톨 혼합물로 전환시키고, 이어서 이디톨을 통상적으로 완전 탈수하여 이소이다이드를 제공한다. 일반적인 일 구현예에서, 탈수를 이디톨-풍부 헥시톨 혼합물에 대해 수행하여 이소이다이드를 포함하는 이소헥사이드 생성물 혼합물을 제공하고, 이소이다이드를 그로부터 회수한다. 일반적인 또 다른 구현예에서, 이디톨을 이디톨-풍부 헥시톨 혼합물로부터 분리하고, 이 이디톨의 적어도 일부분을 탈수하여 이소이다이드 생성물을 제공한다.

Method for preparing hexitol or hydroxy-acetone
CN01.08.2012
201210041343.3Peking UniversityLiu Haichao
C07C 31/26
C CHEMISTRY; METALLURGY
07
ORGANIC CHEMISTRY
C
ACYCLIC OR CARBOCYCLIC COMPOUNDS
31
Saturated compounds having hydroxy or O-metal groups bound to acyclic carbon atoms
18
Polyhydroxylic acyclic alcohols
26
Hexahydroxylic alcohols
The invention discloses a method for preparing hexitol or hydroxy-acetone, which comprises the steps as follows: cellulose reacts with glucose or fructose in water under the action of hydrogen atmosphere and catalytic agents, so as to obtain hexitol or hydroxy-acetone; the catalytic agents are supported metal catalysts; active constituents of the supported metal catalysts are metal modified by modifiers; the metal is any one of Pt, Ru, Ni and Cu; and a carrier of the supported metal catalysts is any one of Al2O3, TiO2, ZrO2, SiO2 and activated charcoal. The provided method selectively obtains hexitol or hydroxy-acetone through a one-pot reaction based on cellulose and glucose or fructose, achieves simple process, rapid reaction, high efficiency and energy conservation, and is easy to industrialize; the catalytic agents can be recovered and recycled, so that the cost is saved, and environmental protection can be achieved; in addition, the method has low requirements on equipment, cannot corrode equipment, and achieves low investment.

PROCESS FOR THE PREPARATION OF CARBOXYLIC ESTERS OF HEXITOLS
EP23.05.1984
83110909HOECHST AKTIENGESELLSCHAFTSTUHLER, HERBERT, DR.
C07C 67/08
C CHEMISTRY; METALLURGY
07
ORGANIC CHEMISTRY
C
ACYCLIC OR CARBOCYCLIC COMPOUNDS
67
Preparation of carboxylic acid esters
08
by reacting carboxylic acids or symmetrical anhydrides with the hydroxy or O-metal group of organic compounds
Es wird ein Verfahren zur Herstellung von Carbonsäureestern von Hexiten beschrieben, bei dem Hexit und Carbonsäure in Gegenwart von alkalischen Katalysatoren rasch auf 210 bis 250°C erhitzt werden, die Veresterungsreaktion unter gleichzeitiger Austragung des entstehenden Wassers so lange bei dieser Temperatur fortgeführt wird, bis eine Säurezahl von 2 bis 15 erreicht ist, worauf rasch auf mindestens 145°C abgekühlt wird. Mit diesem Verfahren werden Hexitcarbonsäureester erhalten, die im wesentlichen frei sind von Anhydroverbindungen und eine gute Farbqualität aufweisen. Die Hexitcarbonsäureester sind oberflächenaktive Substanzen, insbesondere hochwertige Emulgatoren und Gleitmittel.

Method for preparing high purity anhydrosugar alcohols by thin film distillation
CN25.03.2015
201380024324.2SAMYANG GENEX CORPORATIONKYUNG DO-HYUN
C07C 29/80
C CHEMISTRY; METALLURGY
07
ORGANIC CHEMISTRY
C
ACYCLIC OR CARBOCYCLIC COMPOUNDS
29
Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
74
Separation; Purification; Stabilisation; Use of additives
76
by physical treatment
80
by distillation
The present invention relates to a method for preparing high purity anhydrosugar alcohols using hydrogenated sugar, and more specifically, to a method for preparing high purity anhydrosugar alcohols (particularly, isosorbide, isomannide, isoidide, and the like) with a purity of 97.5% or higher (more preferably, 98.5% or higher) and a pH of a distillate of 3.7 or higher (more preferably, 4.0 or higher) in a distillation yield of 87% or higher (more preferably, 90% or higher) by adding an acid to hexitol so as to convert the same into anhydrosugar alcohols, and single-stage distilling the converted product by using an internal condenser type thin film evaporator.

Etherification process for hexitols and anhydrohexitols
US06.03.1984
06372623KRUSE WALTER MKruse Walter M.
B01J 31/02
B PERFORMING OPERATIONS; TRANSPORTING
01
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
J
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS, COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
31
Catalysts comprising hydrides, coordination complexes or organic compounds
02
containing organic compounds or metal hydrides

A high yield process for the polyalkylation of hexitols and hexitol inner ethers is presented wherein aqueous dispersions of monoalkali metal alkoxides thereof in organic solvent are reacted with alkyl monohalides to first form the monoalkylated hexitols or hexitol inner ether and thereafter further alkylated by addition of reactants to form the completely alkylated derivative.


Results 1-10 of 2,394 for Criteria:CHEM:(FBPFZTCFMRRESA-UHFFFAOYSA-N) Office(s):all Language:en Stemming: false
Filters
1 2 3 4 5 6 7 8 9 10 11 12
Page: / 240