Examples of 'ketene dimer' in a sentence
Meaning of "ketene dimer"
Ketene dimer: This term refers to a chemical compound known as a dimer of ketene, which has unique properties and applications in chemistry
How to use "ketene dimer" in a sentence
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ketene dimer
The ketene dimer is obtained by dimerization of ketenes.
Suitable paper sizes are ketene dimer sizes.
Ketene dimer may prove preferable.
The invention is also directed to alkyl ketene dimer so produced.
The ketene dimer can also be dissolved in a suitable inert organic solvent.
The amount for each ingredient is given in terms of ketene dimer.
From this the percent ketene dimer actually present was calculated.
The sizing agent used was a cationic dispersion of alkyl ketene dimer.
The esterification of polysaccharides by a ketene dimer causes the polysaccharides to become more hydrophobic.
The stabilising agent can be added to any aqueous dispersion of the ketene dimer.
Ammonia can react with ketene dimer to form a compound that does not size.
The base paper had been neutral sized with a conventional alkyl ketene dimer size.
The alkyl ketene dimer dispersion was poured into a glass flask with a bubble tube.
The present invention relates to stabilized dispersions of alkyl ketene dimer paper sizing agents.
The spray drying of the ketene dimer dispersions can be carried out using conventional equipment.
See also
Among the sizing agents, an alkyl ketene dimer is preferable.
Similar alkyl ketene dimer sizing agents may be prepared from branched alkyl ketene dimers.
The toluene content is indicated as counts / g of alkyl ketene dimer.
This lessens the sizing efficiency of ketene dimer dispersions stabilized with the ammonium salt.
The ketene dimer can be applied in the neat, liquid form.
The reaction mixture comprises organic solvents, polysaccharides, and a ketene dimer.
The ketene dimer dispersion of the invention is stabilized by a dispersant, preferably by a protective colloid.
The method of claim 5 wherein the dispersion of ketene dimer is starch stabilized.
The mixture of alkyl ketene dimer and sorbent was left for 30 min before centrifugation.
Process according to anyone of claims 6 to 9 in which liquid alkyl ketene dimer is used.
This Example shows the preparation of an alkyl ketene dimer using N-methylpyrrolidine in cyclohexane.
The composition of claim 25 wherein the reactive sizing agent is an alkenyl ketene dimer.
The Example shows the production of an alkyl ketene dimer using N-methylpyrrolidine in cyclohexane.
The paper of claim 37 wherein the reactive sizing agent is an alkenyl ketene dimer.
The C18 alkyl ketene dimer size preferable for the invention is a commercially available product.
The tipping paper according to claim 1, further comprising an alkyl ketene dimer as a sizing agent.
However, any ketene dimer is adequate.
The hydrophobic agent is selected from paraffin wax, silicone oil, and alkene ketene dimer.
Preferably, the composition comprises a ketene dimer or ketene multimer of Formula I,.
A process according to claim 10, characterised in that the sizing agent is a ketene dimer.
EXAMPLE 7 This Example shows the preparation of an alkyl ketene dimer using N-methylpiperidine in methylcyclohexane.
The alkyl ketene dimer was added to the starch ( where it melted and mixed ).
More specifically, the hydrophobing agent is an alkyl ketene dimer and the solvent is toluene.
Dispersions of ketene dimer made without cetic acid fail the test at 20 % dimer solids.
It had been sized with a stearyl ketene dimer at 1 % level.
Alkyl ketene dimer ( AKD ) is a neutral sizing agent that is now widely used.
Sizing in a neutral medium with 2 % of an alkyl ketene dimer emulsion.
Alkyl ketene dimer Images & Photos.
For instance, if so desired, conventional alkyl ketene dimer can be used.
Alkyl Ketene Dimer ( AKD ) was used for this purpose.
Analysis of the product showed it to have an alkyl ketene dimer assay of 90 %.
The concentration of the ketene dimer in the solvent is generally 1 to 60 % by weight.
The hydrophobic compound used as a sizing agent was alkyl ketene dimer ( AKD ).
In this context, it means a hydrocarbyl ketene dimer product, which has been formed e . g.
The content of silica-based particles was 30 % by weight, calculated as SiO2 on dry ketene dimer.
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