摘要:
6-Chloro-6-deoxy-D-hexitols, a novel class of compounds, and their esters, possess male antifertility activity and are thus useful in antifertility compositions. They are prepared by reduction of 6-chloro-6-deoxy-D-hexoses.
摘要:
A use in human therapy (viz as an active ingredient for inhibiting tooth decay) has been found for chlorodeoxysucrose derivatives of the general formula (wherein: R 4α is a hydroxy group and R 4β is a hydrogen atom, or, one of R 4α and R 4β is a hydrogen atom and the other is a chlorine atom; R 6 is a hydroxy group or, if at least one of R 4a , R 4β or R 11 is a chlorine atom, then it is a hydroxy group or a chlorine atom; R 1 is a hydroxy group or a chlorure atom; and R 6 , is a hydroxy group, or if at least one of R 4α , R 4β or R 1 ' is a chlorine atom, then it is a hydroxy group or a chlorine atom). Compounds and dental or other compositions for such use are claimed, as well as methods for making the compositions.
摘要:
Resins for use in making resin-coated granules are made by preparing a novolak resin from a phenol and formaldehyde in the presence of lactose and / or galactose, using an acid catalyst. Melt-coating the resin with an amine curing agent on to particulate refractory material gives resin-coated granules which can be moulded to make foundry moulds. The lactose and or galactose can replace part of the phenol conventionally employed in preparing novolak resins and avoid the need for plasticisers.
摘要:
The present case relates to a process for the purification of lactide from a crude lactide vapour product stream which process comprises a rectification/condensation step leading to a lactide-enriched condensate.
摘要:
A crystalline form of sucralose, and a method of making it. The method involves continuously crystallizing sucralose from an aqueous solution by a process providing continuous removal and recirculation of the vessel contents, and providing a long residence time for sucralose in the system. The crystals thus formed are of a relatively low length/diameter ratio, have an unsymmetrical shape, and exhibit good stability. The larger crystals in particular are tapered as compared to the rod-like larger crystals in prior art product.
摘要:
A process for separating, in the liquid phase, a reaction mixture which comprises a first chlorinated sucrose and at least one additional component selected from the group consisting of at least one other chlorinated sucrose different from said first chlorinated sucrose, salt and solvent, by injecting said reaction mixture onto a fixed bed of solid adsorbent and treating with a desorbent such that: (a) the first chlorinated sucrose passes through the adsorbent into a first recoverable product stream rich in said first chlorinated sucrose at a rate, which is different than the rate at which, (b) at least one of said additional components passes through the adsorbent into at least a second recoverable stream rich in said additional component.
摘要:
A sweetened extruded food product based on a vegetable material containing sweetener incorporated before extrusion, is formulated so that the sweetener comprises a significant proportion of sucralose. In particular, the sucralose provides at least 50 %, preferably at least 75 % of the sweetness.