10 results about "Phenylpropanoic acid" patented technology

The present disclosure relates to a method for synthesizing a substituted phenylpropionic acid derivative. Specifically, the present disclosure relates to a method for preparing a compound as represented by formula I or a pharmaceutically acceptable salt thereof, which method exhibits a good yield.

The invention relates to the technical field of chinlon, in particular to a plant-source composite anti-ultraviolet functional chinlon filament and a preparation method thereof, and the plant-source composite anti-ultraviolet functional chinlon filament comprises the following raw materials: nylon 6, a functionalized lignin compound, tetra [beta-(3, 5-di-tert-butyl-4-hydroxyphenylpropionic acid) propyl] pentaerythritol ester and polyvinylpyrrolidone. According to the invention, furan groups are introduced into the lignin, so that the polar structure of the lignin can be effectively adjusted, the dispersion stability of the lignin in an organic phase system is improved, the lignin and polyamide molecules can form hydrogen bonds and pi-pi interaction, the interface bonding force and compatibility are remarkably enhanced, and the spinning defect caused by agglomeration of traditional lignin is avoided; the conjugated double bond in the furan ring and the aromatic skeleton of the lignin have a synergistic effect, so that ultraviolet radiation energy can be shielded, and non-radiation dissipation can be realized, thereby inhibiting the photooxidation fracture of the chinlon molecular chain and improving the ultraviolet aging resistance of the filament.

The application discloses application of a phenylpropionic acid compound in detection of monosaccharide composition of traditional Chinese medicine polysaccharide. The phenylpropionic acid compound has a structure as shown in formula (I). The application provides a new application of the phenylpropionic acid compound, and preliminary realization of quality control research on traditional Chinese medicine preknowing polysaccharide. Compared with a method for detecting monosaccharide composition of traditional Chinese medicine polysaccharide by using 1-phenyl-3-methyl-5-pyrazolone as a pre-column derivatization reagent, the application has the following advantages: 1. Derivatization of aldehyde sugar and ketose can be simultaneously realized; 2. The reaction temperature is more moderate, and the safety of the reaction is greatly improved; 3. The detection wavelength of HPLC-UV is improved from 245 nm to 274 nm, interference is reduced, and sensitivity is improved; and 4. The pre-column derivatization reagent is low in cost and easy to obtain.

This application relates to the use of hydroxyphenylpropanoate compounds of formula (I), (II), (III), (IV), or (V), or pharmaceutically acceptable salts, solvates, and / or ester prodrugs thereof, compositions comprising the same, and their use in, for example, cancer immunotherapy, for increasing antitumor immunity. More particularly, this application relates to compounds useful in the treatment of diseases, disorders, or conditions that can be treated by increasing intracellular antitumor immunity, such as cancer.

This invention discloses a method for preparing a high-temperature resistant modified nylon 66 composite fiber material, relating to the field of nylon technology. The method includes the steps of preparing a composite reinforcing antioxidant component, preparing modified nano-silica, and obtaining the composite fiber material. The raw materials used to prepare the composite reinforcing antioxidant component include maleic anhydride-grafted polyolefin elastomer, 1,6-hexanediamine, processing stabilizer, 3,5-di-tert-butyl-4-hydroxyphenylpropionic acid, and p-toluenesulfonic acid. The raw materials used to prepare the modified nano-silica include nano-silica and a composite silane coupling agent. The raw materials used to obtain the composite fiber material include nylon 66 resin, the composite reinforcing antioxidant component, modified nano-silica, pentaerythritol stearate, epoxy resin, and a composite antioxidant additive. The nylon 66 composite fiber material prepared by this invention exhibits strong high-temperature resistance, excellent mechanical properties, and superior aging resistance.

The invention discloses a method for preparing a dihydrofuran-containing compound by using alpha-halogenated ester, which comprises the following steps of: adding 2-chloro-3-oxo-3-methyl phenylpropionate, 1, 1-disubstituted ethylene, N-methylindole, alkali and lewis acid into an organic solvent, reacting at room temperature under the irradiation of blue light, and then performing chromatography to obtain the dihydrofuran-containing compound. According to the method, methyl 2-chloro-3-oxo-3-phenylpropionate, 1, 1-disubstituted ethylene and N-methylindole are used as reactants, and the dihydrofuran-containing compound is obtained through one-step reaction under room-temperature blue light irradiation. The synthesis method has the advantages of high efficiency, simple conditions, high yield and environmental friendliness, and the target molecule has important application value in the fields of medicines and pesticides.

The present disclosure provides an additive for a spunbond nonwoven geotextile and a geotextile. The additive for a spunbond nonwoven geotextile includes titanium dioxide, tris(2,4- di-tert-butylphenyl)phosphite, tetrakis (3,5-di-tert-butyl-4-hydroxy) phenylpropanoic acid pentaerythritol ester, N,N'-ethylenebis(stearamide), zinc stearate, and hard acid ester. The additive can be added during a process of preparing a geotextile with polyethylene terephthalate. The additive can effectively improve the aging resistance of a light-weight geotextile fabric. When the existing geotextiles are used in a construction process, it is necessary to take activity-maintaining measures such as covering and light avoiding. When used outdoors, the geotextile prepared by the present disclosure does not require light-avoiding protection measures, which saves a lot of manpower, materials, and financial resources. 20 24 22 01 08 26 S ep 2 02 4 A B S T R A C T T h e p r e s e n t d i s c l o s u r e p r o v i d e s a n a d d i t i v e f o r a s p u n b o n d n o n w o v e n g e o t e x t i l e a n d a g e o t e x t i l e . T h e a d d i t i v e f o r a s p u n b o n d n o n w o v e n g e o t e x t i l e i n c l u d e s t i t a n i u m d i o x i d e , t r i s ( 2 , 4 - S e p 2 0 2 4 2 2 0 1 0 8 2 6 2 0 2 4 d i - t e r t - b u t y l p h e n y l ) p h o s p h i t e , t e t r a k i s ( 3 , 5 - d i - t e r t - b u t y l - 4 - h y d r o x y ) p h e n y l p r o p a n o i c a c i d p e n t a e r y t h r i t o l e s t e r , N , N ' - e t h y l e n e b i s ( s t e a r a m i d e ) , z i n c s t e a r a t e , a n d h a r d a c i d e s t e r . T h e a d d i t i v e c a n b e a d d e d d u r i n g a p r o c e s s o f p r e p a r i n g a g e o t e x t i l e w i t h p o l y e t h y l e n e t e r e p h t h a l a t e . T h e a d d i t i v e c a n e f f e c t i v e l y i m p r o v e t h e a g i n g r e s i s t a n c e o f a l i g h t - w e i g h t g e o t e x t i l e f a b r i c . W h e n t h e e x i s t i n g g e o t e x t i l e s a r e u s e d i n a c o n s t r u c t i o n p r o c e s s , i t i s n e c e s s a r y t o t a k e a c t i v i t y - m a i n t a i n i n g m e a s u r e s s u c h a s c o v e r i n g a n d l i g h t a v o i d i n g . W h e n u s e d o u t d o o r s , t h e g e o t e x t i l e p r e p a r e d b y t h e p r e s e n t d i s c l o s u r e d o e s n o t r e q u i r e l i g h t - a v o i d i n g p r o t e c t i o n m e a s u r e s , w h i c h s a v e s a l o t o f m a n p o w e r , m a t e r i a l s , a n d f i n a n c i a l r e s o u r c e s . A B S T R A C T S e p 2 0 2 4 2 2 0 1 0 8 2 6 2 0 2 4

The invention discloses an isobutylphenylpropionic acid suspension drop, which is prepared from the following components in percentage by weight: 4 percent of isobutylphenylpropionic acid, 1.18 to 1.66 percent of xanthan gum 1 and xanthan gum 2, 0 to 0.075 percent of polysorbate 80, 0.18 percent of anhydrous citric acid, 0.2 percent of sodium benzoate, 30 percent of cane sugar, 10 percent of glycerol, 0.04 percent of essence and 53.845 to 54.4 percent of water. The D90 of the xanthan gum 1 is 10-40 [mu] m, the D90 of the xanthan gum 2 is 150-220 [mu] m, and the dosage ratio of the xanthan gum 1 to the xanthan gum 2 is (1.5-3.5): 1. Two xanthan gum with different particle sizes are compounded to serve as a thickening agent and a suspending aid to be prepared into the isobutylphenylpropionic acid suspension drop together with the active component isobutylphenylpropionic acid and other auxiliary materials, and the isobutylphenylpropionic acid suspension drop is stable in performance and better in state.