3 results about "Enhanced dissolution" patented technology

This invention provides a photosensitive resin composition, a photoresist curable film, and their applications. The photosensitive resin composition comprises an alkali-soluble resin, a photosensitive compound, and a crosslinking agent. The crosslinking agent has a structure as shown in the following formula. Through the design of a specific crosslinking agent structure and its compounding with other components, the photosensitive resin composition, during exposure, achieves enhanced dissolution inhibition in non-exposed areas due to the shielding of some hydroxyl and carboxyl groups by tert-butyloxycarbonyl groups. In exposed areas, the photoacid-generating agent decomposes and catalyzes the departure of tert-butyloxycarbonyl groups, exposing active groups and achieving alkali solubility. After photolithography and development, the film exhibits higher film retention and better contrast.

The invention relates to the technical field of reactors, in particular to a system and a method for ultrasonic-enhanced dissolution of a supergravity polymer, which are used for solving the problems of long swelling time, incomplete dissolution and easiness in blockage of an existing polymer dissolution device. A plurality of layers of ultrasonic transducers are arranged on the surface of a shell of the polymerization dissolution packed bed in a staggered and crossed mode, namely in a W shape, and a packing shearing space combining autorotation and revolution is built in the shell. The device introduces high-strength ultrasonic cavitation and microjet effects while generating strong shearing and updating a liquid film by using the rotary packing ring, so that not only is a dead angle of a sound field eliminated, but also the device adapts to the change of load impedance in the dissolving process. Through deep coupling of macroscopic rotational flow and a microcosmic cavitation effect, rapid gel breaking and uniform dissolution of a high-viscosity polymer can be realized at a relatively low temperature rise, and the device is suitable for continuous and efficient preparation of oil field chemicals and sewage treatment agents.

The invention relates to the technical field of bamboo wood treatment, in particular to a mould-proof process for treating bamboo wood through cooperation of low-temperature freezing and ultrasonic waves. The mould-proof technology comprises the following steps that bamboo wood is sequentially subjected to water immersion treatment and freeze-thaw cycle treatment, and freeze-thawed bamboo wood is obtained; and the freeze-thawed bamboo wood is subjected to ultrasonic treatment under the water bath condition, and the modified bamboo wood is obtained. According to the mildew-proof process, the water-saturated bamboos are sequentially subjected to freeze-thaw cycle treatment and ultrasonic treatment, and the freeze-thaw cycle treatment can enable water permeating pores in the bamboos to be condensed into ice crystals to cause volume expansion, so that a transverse substance transmission channel is effectively established, the permeability is improved, and meanwhile, the macroscopic mechanical integrity of the bamboos is kept. The enhanced dissolution effect of the ultrasonic cavitation effect promotes dissolution of a microbial metabolism substrate and maintains the basic integrity of a cellulose microfibril network at the same time, so that a nutrient matrix required by microbial metabolism is fundamentally eliminated, and long-acting mildew prevention is realized.