Examples of 'hydroxyl number' in a sentence
Meaning of "hydroxyl number"
hydroxyl number: a measure of the amount of hydroxyl (OH) groups in a chemical compound, often used in the analysis of alcohols and other organic compounds
How to use "hydroxyl number" in a sentence
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hydroxyl number
Analysis showed the hydroxyl number to be about zero.
Equivalent weight is determined from the measured hydroxyl number.
Procedures for determining the hydroxyl number of chemical compositions are known.
The level of polymerization is best indicated by the hydroxyl number.
The hydroxyl number of the respective samples was determined by infrared spectroscopy.
They are identified by their hydroxyl number.
The hydroxyl number and viscosity of each product was measured by standard methods.
The reaction was monitored by titrating for the hydroxyl number.
Essentially all the contribution to hydroxyl number comes from monoesters of diols.
The polyester polymer may have any suitable hydroxyl number.
The molecular weight or hydroxyl number of the base polyol will thus be selected.
The reaction is run to the appropriate acid or hydroxyl number and viscosity.
Hydroxyl number indicates the number of reactive hydroxyl groups available for reaction.
The method of determination for ascertaining the hydroxyl number is described hereinafter.
The hydroxyl number or percent hydroxyl was determined using the following testing procedure.
See also
The course of the reaction was followed by monitoring the hydroxyl number of the product.
The hydroxyl number of the polyether polyol can be experimentally measured by standard titration methods.
The dehydration reaction is followed by monitoring the iodine number and the hydroxyl number.
The hydroxyl number of the polyols employed can accordingly vary over a wide range.
The reaction is monitored by periodic sampling for acid value and hydroxyl number measurements.
The sucrose ester advantageously has a hydroxyl number which imparts a pronounced hydrophilic nature thereto.
An aliquot of the mixture was taken and analyzed for free isocyanate and hydroxyl number.
The hydroxyl number of the polyol or polyols employed can accordingly vary over a wide range.
The product polyol has a hydroxyl number of c . a.
The hydroxyl number can also be defined by the equation,.
The resulting polyester resins all had an hydroxyl number of 0 and showed no crystallinity.
The hydroxyl number may be determined by back-titration using potassium hydroxide.
Plastics - Polyols for use in the production of polyurethane - Determination of hydroxyl number.
The acid number and hydroxyl number are expressed in mg KOH per g of polyester resin.
Polyol C is a propylene oxide adduct of propylene glycol having a hydroxyl number of about 56.
Hydroxyl number is determined by end-group analysis and is also defined be the equation,.
Polyol B is an all propylene oxide adduct of propylene glycol having a nominal hydroxyl number of 29.
The hydroxyl number is expressed in mg KOH / g.
The dispersion has a hydroxyl number of at least 40.
The hydroxyl number can also be defined by the equation, EPMATHMARKEREP wherein,.
It preferably has a hydroxyl number of at least 50.
The hydroxyl number can also be defined by the equation, EPMATHMARKEREP where.
The polycondensate has a hydroxyl number of 72.
The hydroxyl number of this oligomer was found to be 70.
The resultant polyol has a hydroxyl number of about 28.
The hydroxyl number of the conventional polyol is approximately 25.
Such polyols are preferably characterized by an hydroxyl number of below 35.
The hydroxyl number of these polyethers typically does not exceed 45.
A product having an iodine number of 55 and a hydroxyl number of 2 is obtained.
The hydroxyl number of said composition is preferably no greater than 30.
The resulting polyether acrylate polyol had a hydroxyl number of 50.
In further embodiments the hydroxyl number of the polyester is less than 350.
In certain embodiments, the one or more propylene-oxide polyols have a hydroxyl number of 22.
Polyol having a hydroxyl number of less than about 180 ; and free radical polymerization initiator.
The feed was continued until the hydroxyl number reached 82.
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