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US 11,634,376 B2Granted
Long alpha-omega di-functional linear ethers
AssigneeUniversiteit Antwerpen
InventorsLukasz Pazdur, Serge M. F. Tavernier
Life of this patent
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Abstract
The current invention relates to long α-ω di-functional linear molecules as building blocks closing the gap between small molecules and polymers, or in a polycondensated form, in the production of oligomers and/or polymers, surfactants, lubricants, coatings, colloidal stabilizing surface chains/molecules.
Claims19
A compound of Formula I,
- R1-L1-O-L1-R2 (I)
- wherein
- L1 is C8-alkyl;
- R1 and R2 are each independently selected from —(CH2)mOH, —(CH2)nCOOH, and —(CH2)pNH2;
- each occurrence of m is independently an integer from 5 to 9;
- each occurrence of n is independently an integer from 3 to 8;
- each occurrence of p is independently an integer from 5 to 9;
- and
- the compound is not HOOC—(CH2)15—O—(CH2)16—OH.
6 more elements
A method for the preparation of a compound of formula (II)
- R3-L3-O-L4-R4 (II)
- wherein
- L3 and L4 are alkyl chains comprising at least 8 C atoms;
- R3 and R4 are each independently selected from —OH, —COOH, —NH2;
- the total number of C atoms in L3 and R3 together is at most 17;
- and
- the total number of C atoms in L4 and R4 together is at most 17, the method comprising:
- providing a first solution comprising at least one monounsaturated alcohol, dialkyl carbonate and a heterogeneous oxide based catalyst;
- heating the first solution;
- removing the catalyst and non-reacted dialkyl carbonate from the first solution, resulting in a second solution;
- adding a heterogeneous oxide based catalyst to the second solution, resulting in a third solution;
- heating the third solution to obtain an unsaturated dialkyl ether compound;
- cleaving the unsaturated bond of the unsaturated dialkyl ether to obtain functionalized end groups;
- and
- optionally further derivatizing the obtained functionalized end groups.
12 more elements
Dependencies are inferred from the claim text.