Examples of 'polymethylene' in a sentence
Meaning of "polymethylene"
polymethylene (noun) - a polymer consisting of multiple methylene groups in a chain structure. Polymethylenes are used in various industrial applications such as plastics and fibers due to their strength and durability
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- Any organic compound having a general formula (CH₂)ₙ
- Any of many organic compounds either having a polymeric structure of repeating -CH₂- groups
How to use "polymethylene" in a sentence
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polymethylene
Another suitable isocyanate is polymethylene polyphenylene polyisocyanate.
This waxy product was subsequently characterized as being polymethylene.
Especially useful are polymethylene polyphenyl polyisocyanates.
Polymethylene and polyphenylene polyisocyanates.
A process for the production of polymethylene polyphenyl polyisocyanates is disclosed.
The polymethylene polyphenyl isocyanate is added in order to lower viscosity.
Examples of suitable higher functionality polyisocyanates are polymethylene polyphenyl isocyanates.
Polymethylene polyphenylene 에스테르.
Preferred initiators are diaminodiphenylmethane and polymethylene polyphenylene polyamines.
Polymethylene polyphenyl isocyanate has been found to give the composite resin more reactivity and rigidity.
A preferred polyisocyanate first wall forming component is polymethylene polyphenylisocyanante.
Particularly preferred are mixtures of polymethylene polyphenylisocyanate with isomeric mixtures of toluene diisocyanate.
Examples of suitable higher functionality polyisocyanates include polymethylene polyphenol isocyanates.
The remainder of the polyphenylene polymethylene polyisocyanate composition comprises higher homologues of polyphenylene polymethylene polyisocyanate.
Solid organic polyisocyanate composition comprising dimerised polyphenyl polymethylene polyisocyanate.
See also
Mixtures of toluene diisocyanate and polymethylene polyphenylene polyisocyanates may be used as well.
The polyisocyanate production method can be used to produce polymethylene polyisocyanate.
Less preferred aromatic diisocyanates include the polymethylene polyphenylene polyisocyanates having functionalities greater than two.
A preferred polyisocyanate first wall forming component is toluene diisocyanate or polymethylene polyphenylisocyanate.
Suitable polymethylene polyphenylisocyanates are mixtures of polymethylene polyphenylene isocyanates in monomeric MDI.
A is preferably a polymethylene group.
The alkylated polymethylene a-w diammonium derivatives can be obtained from precursors.
The solvent was then vacuum distilled to produce the final polymethylene polyphenyl polyisocyanate.
No polyphenyl polymethylene polyisocyanate is present in example 1 thereof.
Characterised in that the solid organic polyisocyanate composition comprises dimerised polyphenyl polymethylene polyisocyanate.
Particularly preferred polyisocyanates are polymethylene polyphenylisocyanates of formula wherein n is 2 to 4.
Particularly preferred for inclusion with the triol and diol polyols mixture is polymethylene polyphenyl isocyanate.
Polymethylene waxes that may be obtained vía the Fischer-Tropsch process.
Preferred initiators for use in the present invention are diaminodiphenylmethane and polymethylene polyphenylene polyamines.
Of the polyisocyanates, polymethylene polyphenylisocyanate and isomeric mixtures of toluene diisocyanate are preferred.
Bichromophoric compounds containing a nucleotide base and coumarin linked with a polymethylene chain have been synthesized.
The alkylated polymethylene a-w diammonium derivative acting as a template has the following formula,.
The undistilled bottoms fraction from the first thin film evaporator contains polymethylene polyphenyl polyisocyanate.
The reactivity of polymethylene poly ( phenylisocyanate ) blends is known to vary with the acidity.
It has a similar structure to PET except that the polymethylene sequence is longer.
These mixtures of a polymethylene poly ( phenylisocyanate ) blends with b epoxides exhibit stable reactivity profiles.
The polymeric MDI is generally a mixture of diphenyl methane diisocyanate and polymethylene polyphenyl polyisocyanate.
Such mixtures include polymethylene polyphenyl polyisocyanates ( crude or polymeric MDI ).
In such cases IUPAC recommends polymethylene.
A process for the production of polymethylene polyphenyl polyisocyanates ( PMDI ) is disclosed.
Compound according to claim 1, wherein said isocyanate is a polymethylene diisocyanate.
The use of claim 3 wherein X is a polymethylene chain substituted by one or more hydroxyl groups.
Polypropylene glycol and polybutylene glycol are suitable, as is polymethylene glycol.
The method of Claim 1 wherein the polyisocyanate is polymethylene polyphenylene polyisocyanates or an isomer thereof.
A reaction system as claimed in claim 1 wherein the organic polyisocyanate is polyphenylene polymethylene polyisocyanate.
For example, a polymethylene such as Sasol wax can be used as the polyolefin resin.
Preferably, the wax is a wax of polymethylene or polyethylene.
The waxes produced may comprise a blend of different compounds, including for example, polymethylene.
The hydrocarbonaceous groups preferably denote polymethylene groups of 2 to 8 carbon atoms.
A polymethylene linkage ; or.
