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US 2026/0201283 A1Published application
Solvent composition
OwnerQinyuan Gui, Yali Ji +3inventors
InventorsQinyuan Gui, Yali Ji, Qi Jiang, Cheng Shen, Hua Ren
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Abstract
A solvent composition is provided that may be a mixture of two or more components. The molecules in the solvent comprise a carbonyl group, an ether linkage, and a group selected from —OH and —NH2.
Claims9
A solvent composition SC1 comprising one or more compounds C1, one or more compounds C2, and one or more compounds C3,
- a) wherein each compound C1 comprises one or more chemical groups selected from the list consisting of —NH2 and —OH, wherein the —OH group, if present, may or may not be part of a carboxyl group,
- b) wherein each compound C2 comprises or more ether linkages,
- c) wherein each compound C3 comprises or more carbonyl groups, which may or may not be part of a carboxyl group,
- d) wherein a single compound may possibly serve as two or more of compound C1, compound C2, and compound C3,
- e) wherein the solvent composition SC1 has a melting point that is 65° C. or lower,
- f) wherein the solvent composition SC1 either has no halogen atoms or else has halogen atoms in an amount of 0.1% or less by weight, based on the weight of the solvent composition SC1,
- g) wherein there is a temperature T1 that is greater than or equal to 15° C. and that is less than or equal to 40° C., wherein the solvent composition SC1 is liquid at temperature T1, and wherein, at the temperature T1, the solubility of Monomer A in the solvent composition SC1 is 0.5% or higher, by weight, based on the weight of the solvent composition SC1, wherein Monomer A has the structure
- h) wherein, at the temperature T1, the solubility of Monomer B in the solvent composition SC1 is 0.5% or higher, by weight, based on the weight of the solvent composition SC1, wherein Monomer B has the structure
5 more elements
A solvent composition SC2 comprising one or more mixtures of compounds selected from the group consisting of
- M1) a mixture consisting of urea, glycolic acid, and diethylene glycol n-butyl ether, wherein the weight percentages of urea, glycolic acid, and diethylene glycol n-butyl ether meet one of criterion A) or criterion B), wherein all percentages are by weight based on the weight of mixture M1, wherein pU is the percent of urea, pGA is the percent of glycolic acid, and pDBE is the percent of diethylene glycol n-butyl ether, and wherein criterion A) and criterion B) are defined as follows:
- criterion A):
- pGA is 8% or higher, pGA is less than 32%, pU is 0% or higher, pU is 30% or lower, and pDBE=100−(pU+pGA);
- criterion B):
- pGA is 32% or higher, pGA is 50% or less, pU is 10% or higher, pU is 30% or lower, and pDBE=100−(pU+pGA);
- M2) a mixture consisting of urea and diethylene glycol, wherein the mole ratio of urea to diethylene glycol is from 0.1:1 to 0.3:1,
- M3) a mixture consisting of glycolic acid and diethylene glycol, wherein the mole ratio of glycolic acid to diethylene glycol is from 0.1:1 to 5:1,
- M4) and a mixture consisting of urea and 2-phenoxyethanol, wherein the mole ratio of urea to 2-phenoxyethanol is from 0.1:1 to 0.3:1.
5 more elements
Dependencies are inferred from the claim text.