Compounds and compositions are provided which are useful in additive printing, particularly additive printing techniques such as stereolithography (SLA), wherein a composition of one or more photocurable compounds, such as a compound with multiple ethylenically unsaturated groups and a compound with multiple thiol groups, is photopolymerized, optionally in the presence of two or more thermocurable compounds which are reactive with one another and are subjected to thermopolymerization, to form a manufactured article in solid form.

The present application relates to a polymer composite capable of being quickly dissolved or dispersed in an aqueous solvent, and a preparation method and an application thereof. The polymer composite includes a polymer capable of being thermodynamically dissolved in water or an aqueous solvent and a dispersant containing an ion capable of coordinating with the polymer. The polymer is selected from the group of a water soluble homopolymer and/or copolymer, in particular, thermogelable amphiphilic copolymer.

The present application relates to a polymer composite capable of being quickly dissolved or dispersed in an aqueous solvent, and a preparation method and an application thereof. The polymer composite includes a polymer capable of being thermodynamically dissolved in water or an aqueous solvent and a dispersant containing an ion capable of coordinating with the polymer. The polymer is selected from the group of a water soluble homopolymer and/or copolymer, in particular, thermogelable amphiphilic copolymer.

Esters of polylactic acid, including polyethylene glycol esters of polylactic acid are disclosed. Exemplary esters of polylactic acid can be used as textile finishes. Methods of making the esters of polylactic acid via direct and transesterification reactions are also disclosed.

Esters of polylactic acid, including polyethylene glycol esters of polylactic acid are disclosed. Exemplary esters of polylactic acid can be used as textile finishes. Methods of making the esters of polylactic acid via direct and transesterification reactions are also disclosed.

To provide a siliceous film manufacturing composition that can fill a narrow and a high aspect ratio trench and can produce a thick siliceous film. [Means for Solution] The present invention provides a siliceous film manufacturing composition that comprises, (a) a block copolymer having a linear and/or cyclic polysilane backbone block with or more silicon atoms and a polycarbosilane backbone block with or more silicon atoms, and (b) a solvent.

Esters of polylactic acid, including polyethylene glycol esters of polylactic acid, and esters of polyglycolic acid are disclosed. Exemplary esters of polylactic acid and/or esters of polyglycolic acid can be used as textile finishes. Methods of making the esters of polylactic acid via direct and transesterification reactions are also disclosed.

Esters of polylactic acid, including polyethylene glycol esters of polylactic acid, and esters of polyglycolic acid are disclosed. Exemplary esters of polylactic acid and/or esters of polyglycolic acid can be used as textile finishes. Methods of making the esters of polylactic acid via direct and transesterification reactions are also disclosed.

Disclosed in the present invention is a method for preparing a Y-branched hydrophilic polymer carboxylic acid derivative, in particular a method for preparing a Y-branched polyethylene glycol carboxylic acid derivative having a high purity and high molecular weight. The preparation steps are simple, the product of the reaction is easy to be separated, the cost for separation is low, and the purity and yield of the product are high, facilitating the subsequent preparation of other derivatives and medicament conjugates based on the preparation of the carboxylic acid derivative, which is advantageous for industrial scale-up and commercial applications. The prepared Y-branched hydrophilic polymer carboxylic acid derivative (in particular the Y-branched polyethylene glycol carboxylic acid derivative having a high molecular weight) product has a high purity and high commercial application value, in particular in the use of the preparation of medicaments for preventing and/or treating diseases.

Provided is a lactic acid-based block copolymer which is biodegradable while having excellent mechanical properties.