Examples of 'pentamethylene' in a sentence
Meaning of "pentamethylene"
pentamethylene (noun): Pentamethylene is a chemical compound that consists of a chain of five methylene groups. It is used in organic synthesis and polymer chemistry
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- Five methylene groups in a molecule
- Synonym of cyclopentane
How to use "pentamethylene" in a sentence
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pentamethylene
Preferred aminophosphonate chelants for use herein are diethylene triamine pentamethylene phosphonate.
Is Diethylenetriamine pentamethylene phosphonic acid ( or Heptasodium DTPMP ) sequestrant ex Thermphos.
Particularly preferred methylene phosphonic acids include diethylene triamine pentamethylene phosphonic acid.
To pentamethylene diisocyanate, for example, a stabilizer can also be added.
The preferred sequestering agent is diethylene triamine pentamethylene phosphonic acid or one of its salts.
Examples of possible alkylene groups are ethylene, trimethylene, tetramethylene or pentamethylene.
Among them, trimethylene, tetramethylene and pentamethylene groups are particularly preferred.
Examples of the unsubstituted groups include the ethylethylene, tetramethylene and pentamethylene groups.
A pentamethylene adipamide unit is a structural unit consisting of 1,5-pentamethylenediamine and adipic acid.
Represents a divalent trimethylene or pentamethylene radical ;.
Pentamethylene diisocyanate ( PDI before heating ) is synthesized in this manner.
The animals are observed for 2 hours after administration of the pentamethylene tetrazole.
Pentamethylene diisocyanate is produced, industrially, for example, by phosgenation of pentamethylenediamine ( PDA ).
Examples of suitable aliphatic diisocyanates are tetramethylene diisocyanate, pentamethylene diisocyanate and hexamethylene diisocyanate.
Each R1 preferably is selected from alkyl of 2 to 6 carbon atoms or 2 R1 substituents collectively represent pentamethylene.
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Next, in this method, preferably, the heated pentamethylene diisocyanate is purified by distillation.
Examples of alkylene of 3 to 5 carbon atoms are propylene, butylene and pentamethylene.
Mention is made of tetraethylene pentamine ( TEPA ) and pentamethylene hexamine, of which TEPA is preferred.
Examples of the alkylene are methylene, ethylene, trimethylene, tetramethylene, and pentamethylene.
Advantageously, R 2 is a pentamethylene radical.
Where Y ₂ represents a alkylene group, this may be a methylene, ethylene, propylene, tetramethylene or pentamethylene group.
Pentamethylenediamine ( a ) and pentamethylene diisocyanate ( a ) were supplied such that their stoichiometric ratio was 1:1.
For example, methylene, ethylene, trimethylene, tetramethylene, pentamethylene and hexamethylene are included.
The alkylene formed by R12 and R13 in combination means methylene, ethylene, trimethylene, tetramethylene and pentamethylene.
The term C ₄ - C ₆ polymethylene refers to tetramethylene, pentamethylene and hexamethylene.
In yet another embodiment, it is methylene, ethylene, trimethylene, tetramethylene, or pentamethylene.
The term C4-C6 polymethylene refers to tetramethylene, pentamethylene and hexamethylene.
Examples of two R groups when taken together include di -, tri -, tetra -, and pentamethylene.
The ester of claim 1, wherein Y is selected from trimethylene, tetramethylene . pentamethylene and hexamethylene.
Examples of R1 and R2 when taken together include ethylene, tri -, tetra - and pentamethylene.
Thus, suitable alkylene radicals for R7 include ethylene, trimethylene, tetramethylene, pentamethylene and hexamethylene.
Examples of and R1 and R2 when taken together include di - tri -, tetra - and pentamethylene.
The article as claimed in claim 1, wherein R 2 is a pentamethylene radical.
Preferably R ₃ and R ₄ are each hydrogen or are together pentamethylene.
Examples of a, w-alkylene groups include methylene, ethylene, trimethylene, tetramethylene, pentamethylene and hexamethylene.
As the " alkylenes ", ones with 3 to 6 carbon atoms such as tetramethylene and pentamethylene are mentioned.
Examples include the methylene, ethylene, trimethylene, propylene, tetramethylene, 2-methyltrimethylene, pentamethylene and hexamethylene groups.
For example, R6 may include methyl, ethyl, octyl, tetramethylene, pentamethylene or cyclohexyl.
R may be a divalent C9-C12 alkyl group, for example trimethylene, tetramethylene, pentamethylene or hexamethylene.
In the present specification, C1-5 alkylene means methylene, ethylene, trimethylene, tetramethylene, pentamethylene and isomers thereof.
