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435 results about "Ethylene glycol ester" patented technology

Glycol stearate (glycol monostearate or ethylene glycol monostearate) is an organic compound with the molecular formula C20H40O3. It is the ester of stearic acid and ethylene glycol.

Polyester fibres and preparation method thereof

The invention relates to polyester fibres and a preparation method thereof. The raw material of the polyester fibres is modified polyester which consists of a terephthalic acid chain segment, an ethylene glycol chain segment and a branched chain-containing dihydric alcohol chain segment. The preparation method of the polyester fibres comprises the following steps: performing esterification reaction on terephthalic acid and branched chain-containing dihydric alcohol under the catalysis of concentrated sulphuric acid to obtain terephthalic acid dihydric alcohol ester; then, preparing the terephthalic acid and the ethylene glycol into slurry, and performing the esterification reaction on the slurry to obtain the terephthalic acid ethylene glycol ester; finally, stirring and mixing the terephthalic acid dihydric alcohol ester and the terephthalic acid ethylene glycol ester, and performing condensation polymerization in a low vacuum stage and a high vacuum stage under the action of a catalyst and a stabilizing agent to obtain modified polyester; metering, extruding, cooling, oiling, stretching, heat-setting and winding the polyester to prepare the polyester fibres. The increasing amplitude of the spatial gaps of the polyester fibres is much higher than that of branched chain-free polyester fibres at the same temperature, which is beneficial to the degree of micro particles, such as a dye, that enter the polyester; the dyeing rate is improved.
Owner:JIANGSU HENGLI CHEM FIBER

Multi-hole polyester fiber DTY (draw textured yarn) and preparation method thereof

The invention relates to a multi-hole polyester fiber DTY (draw textured yarn) and a preparation method thereof. According to the preparation method, modified polyester is spun to prepare the multi-hole polyester fiber DTY by the aid of a multi-hole spinneret plate; spinneret holes in the multi-hole spinneret plate are elliptically arrayed, namely, the hole centers of the spinneret holes are positioned on concentric ellipses, the concentric ellipses are series ellipses, long axes of the all ellipses are collinear, short axes of the all ellipses are collinear, the modified polyester is used for preparing a POY (polyester pre-oriented yarn) and then further processed to obtain the multi-hole polyester fiber DTY. A preparation method of the modified polyester includes the steps: performing reaction for terephthalic acid and ethylene glycol to prepare terephthalic acid ethylene glycol ester; adding the terephthalic acid and dihydric alcohol with branching chains, and performing reaction for mixture to prepare terephthalic acid dihydric alcohol ester; continuing to react to obtain the modified polyester. According to the method, prepared fibers are excellent in performance, the deviation ratio of linear density of the DTY is smaller than or equal to 2.0%, a breaking strength CV (variation coefficient) value is smaller than or equal to 4.0%, a breaking elongation CV value is smaller than or equal to 8.0%, and a CV value of crimping shrinkage rate is smaller than or equal to 8.0%.
Owner:JIANGSU HENGLI CHEM FIBER

Preparation method for antifogging thin film coating with high light transmission

Provided is a preparation method for an antifogging thin film coating with high light transmission. M-phthalic acid triethylene glycol ester-5-sodium sulfonate (self made), polyethylene glycol 400, isophorone diisocyanate and pentaerythritol triacrylate are employed as main raw materials, dibutyltin dilaurate is employed as a catalyst, dimethylolpropionic acid is employed as a chain extender, acetone is employed as a solvent, and hydrophilic UV prepolymers are prepared; ethyl orthosilicate is employed as a precursor, gamma-methacryloxy propyl trimethoxysilane is employed as a modifier, a sol-gel method is employed, and uniform and stable modified SiO2 sol is prepared; the hydrophilic UV prepolymers and the modified SiO2 sol are subjected to hybridization through a UV curing way, and a thin film coating is obtained. The prepared thin film coating has good hardness and adhesive force, water resistance and high light transmission and good antifogging effects, and can be used for antifog of surfaces of glass and eyeglass. The preparation technology of the thin film coating accords with green environmental protection concepts, curing and film forming are fast, and comprehensive performances are good. The antifogging thin film coating has good market prospect and is suitable for popularization and application.
Owner:JIANGNAN UNIV

Preparation method of fresh ginger liquid shampoo

The invention provides a preparation method of fresh ginger liquid shampoo. The preparation method of fresh ginger liquid shampoo comprises the following steps of: heating a proper amount of distilled water to 80 DEG C, sequentially adding 1-3% of phthalic acid, 0.5-4% of glycol stearate, 5-10% of sodium dodecyl alcohol ether sulphate and 3-5% of cocamidopropyl while stirring, stirring until the added components are dissolved, cooling to 60 DEG C, adding 1-5% of ammonium lauryl polyether sulphate, 3% of cocoamidopropyl betaine, 1-2% of EDTA-2Na and 1-2% of emulsified silicone oil, stirring, adding 5-30% of gingerol when the temperature of paste is reduced to 40 DEG C, and fully and uniformly stirring. The fresh ginger liquid shampoo contains the gingerol component, so that hairs can be cleaned, scurf can be removed, hair loss can be prevented, blood circulation of the head can be promoted, hair roots can be strengthened, and the hair roots and hairs can be protected; besides, the yield and content of an gingerol extraction method are higher than those of a common water extraction method; compared with the prior art, the fresh ginger liquid shampoo has a better scurf removing and itching relieving function, is safe, produces no side or toxic effects and can be used for a long term by consumers.
Owner:SHANTOU CITY JIAYONG INDAL
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