Examples of 'diphenol' in a sentence
Meaning of "diphenol"
diphenol (noun): A chemical compound containing two hydroxyl groups, commonly used in the production of polymers and pharmaceuticals
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- Any compound that has two phenol groups; especially the isomeric benzenediols (catechol, resorcinol and hydroquinone).
How to use "diphenol" in a sentence
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diphenol
Isozymes of peroxidase or diphenol oxidase exhibited different substrate specificities.
The polycarbonate resin consists of a carbonate component and a diphenol component.
A diphenol like those cited above can be used to introduce the diphenol component.
Preferred is the polycarbonate as produced by transesterification of a diphenol with a carbonic acid diester.
Diphenols such as those named hereinabove can be used to introduce the diphenol component.
Synthesis of a Diphenol.
Diphenols like those cited above can be used in the introduction of the diphenol ingredient.
EXAMPLES The following examples illustrate the preparation of PEG diphenol polyether copolymers.
The same diphenols as those cited above can be used to introduce the diphenol component.
That is, it is obtained by reacting a diphenol with a carbonate precursor.
The diphenol used can be hydroquinone, methylhydroquinone or chlorohydroquinone.
The composition of claim 7 wherein the crosslinking agent comprises an etherated diphenol.
Reacting the diphenol with a diglycidyl ether compound to form a polyether resin ; and.
The most prominent member is tetrabromobisphenol-A, which is prepared by direct bromination of the diphenol.
To introduce the diphenol component, the same diphenol compounds as those described above are usable.
See also
These were attributed to the desired product and the corresponding diphenol ( lowest spot ).
As noted above, the tyrosine-derived diphenol monomers are also useful in the polymerization of polyarylates.
Particularly preferred polymers for the practice of the invention are polymers of tyrosine-derived diphenol compounds.
Exemplary thiazine compounds include phenol thiazine, diphenol thiazine, dimethyl diphenolthiazine, or combinations thereof.
Analysis by 1H NMR and HPLC revealed significant amounts of starting diphenol.
The polymers prepared from tyrosine-derived diphenol compounds having pendent carboxylic acid groups are more hydrophilic.
Process according to claim 1, wherein the phenol starting product is a diphenol.
This fungus produces melanin-like pigments with diphenol and aminophenol through the mediation of a phenyloxidase enzyme.
Diphenols that can be used to introduce the diphenol component are described by formula ( 5 ) below.
Known polycarbonate resins may be used ; these normally consist of a diphenol component and a carbonate component.
Diphenol oxidase activity of tyrosinase was determined spectrophotometrically according to Slominski et al ., J. Invest.
Likewise, most polysulfones contain only a single type of diphenol such as biphenol or bisphenol A.
Diphenol may refer to, Benzenediols Bisphenols Dihydroxybiphenyls Certain polyphenols ( those with 2 phenolic groups ).
Next, the constituent units represented by Formula 4 consist of a diphenol component and a divalent acid component.
The diphenol compounds may be selected from the tyrosine-derived diphenol monomers of U.S. Pat.
The constituent unit described by formula ( 3 ) consists of a diphenol component and a carbonate component.
The diphenol compounds are the tyrosine-derived diphenol monomers of U.S. Patent Nos.
First, the constituent units represented by formula ( 3 ) consist of a diphenol component and a carbonate component.
Alkylating a diphenol of the formula, with 1,5-dibromopentane to produce a compound of the formula,.
Next, the constituent units shown in formula ( 4 ) consist of a diphenol component and a divalent acid component.
The preferred diphenol monomers are des-aminotyrosyl-tyrosine ( DT ) esters.
The preferred cross-linking agents for the epoxy resin are sulphone diphenol and tetrabromo-Bisphenol-A.
Methods for preparing the diphenol monomers are disclosed in commonly owned U. S.
First of all, the constituting unit represented by the formula ( I ) comprises diphenol and carbonate components.
Preferred hindered amines include diphenol amines, such as monoamines or di-para-alkylated diphenylamines.
The recurring units ( II ) are typically derived from a diphenol or derivative thereof, such as diesters.
The oxidoreductases acting with a donor, diphenol or its related compounds include, for example, ascorbate oxidase.
The composition of claim 7, wherein the etherated diphenol crosslinking agent consists essentially of a polyoxyethane ( 6 ) bisphenol A.
Chromogenic Dilabeled-tetraacid diphenol ( 9 ) The following reagent formulation was used,.
