Preparation By Ester-Hydroxy Reaction TRIZ Cases

See how alcohol-ether and phenyl-ether composite solvent extraction eliminates drying, lowers d

Solvent-free catalytic synthesis of polyglycerol esters enables stable, physiologically compatible release of 3-hydroxybutyric acid and acetoacetate.

High-vacuum distillation in a total heating environment purifies muconic acid ester with less solvent, lower catalyst use, and safer scale-up.

A one-pot iodide-assisted route converts vanillylmandelic acid to homovanillic acid esters with fewer side products, simpler work-up, and high purity.

A staged frother composition boosts coarse mineral recovery in roughers, preserves cleaner selectivity, and lowers flammability.

A concentrated alkaline wash with double counter-current stages cuts biodiesel MAG below 0.4% while limiting water and chemical use.

Staged co-extrusion and continuous reactors shorten waste polyester glycolysis while reducing by-products and improving BHET purity.

Side-draw distillation removes acetate buildup from recycled ethylene glycol, enabling continuous BHET production with high purity.

A two-stage PET glycolysis route cuts ethylene glycol, catalyst use, and depolymerization time while producing BHET from waste PET.

Using K2CO3 with alcohol and a polar aprotic solvent enables low-temperature ester polymer depolymerization with cleaner monomer recovery.

Using C4+ alcoholysis before hydrolysis, this case avoids salt formation, cuts neutralization waste, and simplifies terephthalic acid recovery.

Using N-oxyl and low-boiling inhibitors during spiroglycol transesterification suppresses acrylic ester polymerization and improves product purity.

A copper oxide on calcium oxide route converts muconolactone into stable beta-ketoadipates while cutting salt byproducts and toxic reagents.

Countercurrent low-pressure alcoholysis converts high-acidity feedstocks into alkyl esters, cutting residual acidity and retrofit cost.

Insoluble niobium-based mixed oxide catalysts speed PET glycolysis while simplifying filtration, improving BHET purity, and enabling catalyst reuse.

A two-stage depolymerization and alcoholysis route recovers dialkyl terephthalates from polyester with lower energy use and high purity.

Side-draw distillation removes acetate buildup from recycled ethylene glycol, enabling continuous BHET production with high purity.

Continuous pumping keeps plastic particles suspended through heating and hold zones, cutting batch energy use while avoiding agglomeration and clogging.

Pre-transesterifying recycled BHET and removing ethylene glycol by-products raises recycled polyester content while improving resin purity.