- Modified acrylate, preparation method thereof and application of modified acrylate in preparation of conductive adhesive
-
The invention discloses modified acrylate, a preparation method thereof and application of modified acrylate in preparation of a conductive adhesive. Hydroxyl groups in a polyol acrylate monomer is converted into alpha-H-containing acetal groups so as to obtain the modified acrylate. The modified acrylate obtained through reduction of hydroxyl groups has low viscosity, and can be effectively usedas a reactive diluent in a photo-cured coating formula, and since the modified acrylate contains the alpha-H-containing acetal groups which can promote photopolymerization activity, the photo-curing activity can be improved, so that photocrosslinking is promoted without addition of a hydrogenation donor assistant, and the problem of oxygen inhibition is avoided. When the modified acrylate is applied to preparation of a photo-cured composition, the prepared photo-cured composition has easy curing and fast surface drying; and the invention also provides a method for preparing the alpha-H-containing acetal groups through a reaction between enol ether and hydroxyl groups of the polyol acrylate monomer, and provides application of the modified acrylate in preparation of the photo-cured composition and the conductive adhesive of the photo-cured composition.
- -
-
Paragraph 0061-0066
(2019/11/28)
-
- Multifunctional monomers based on vinyl sulfonates and vinyl sulfonamides for crosslinking thiol-Michael polymerizations: Monomer reactivity and mechanical behavior
-
Multifunctional vinyl sulfonates and vinyl sulfonamides were conveniently synthesized and assessed in thiol-Michael crosslinking polymerizations. The monomer reactivities, mechanical behavior and hydrolytic properties were analyzed and compared with those of analogous thiol-acrylate polymerizations. Materials with a broad range of mechanical properties and diverse hydrolytic stabilities were obtained.
- Sinha, Jasmine,Podgórski, Maciej,Huang, Sijia,Bowman, Christopher N.
-
supporting information
p. 3034 - 3037
(2018/03/28)
-
- PH-SENSITIVE NANOPARTICLES FOR DETECTING AND PREVENTING FOOD SPOILAGE
-
Nanoparticles and compositions thereof are provided for detecting and/or preventing food spoilage. Methods of making the nanoparticles and compositions, and methods of using the nanoparticles and compositions, e.g. in food packaging, are also provided. The nanoparticles can have a hydrophobic core containing a hydrophobic active agent, e.g. a hydrophobic dye and/or an antimicrobial agent, for detecting and/or preventing food spoilage. The nanoparticles can also have a copolymer of a hydrophobic polymer repeat unit, e.g. styrene or lactic acid, and a pH responsive dendrimer repeat unit. The pH responsive dendrimer repeat unit can have a pH responsive amine core having a plurality of branched acrylate arms extending therefrom. The nanoparticles can be chemically stable at neutral pH, and then release the hydrophobic active agent at a pH range indicative of food spoilage. By releasing the hydrophobic dye and/or antimicrobial agent, the nanoparticles can detect and/or inhibit food spoilage.
- -
-
Paragraph 0122; 0123
(2018/10/21)
-
- Organic phosphaphenanthrene derivatives, and preparation method and application thereof
-
The invention discloses organic phosphaphenanthrene derivatives, and a preparation method and application thereof. The structural formula of the organic phosphaphenanthrene derivatives is disclosed as Formula I, wherein the group disclosed as Formula II is from carboxylic acid derivatives or acyl chloride derivatives, the group A is from organic phosphaphenanthrene compounds, and the group A is connected with the group disclosed as Formula II through a P-C bond. The preparation method of the organic phosphaphenanthrene derivatives comprises the following steps: carrying out esterification reaction on glycerol and carboxylic acid derivatives or acyl chloride derivatives to obtain glycerol ester derivatives; and under the action of a catalyst, carrying out reaction on the glycerol ester derivatives and organic phosphaphenanthrene compounds. The organic phosphaphenanthrene derivatives can enhance the flame retardancy of the polymer, and can enhance the flame retardancy of the prepared material when being added as a functional aid for preparing high-polarity engineering plastics of PET (polyethylene terephthalate), PBT (polybutylene terephthalate) and other polyesters and PA6 (polyamide 6), PA66 (polyamide 66) and other polyamides.
- -
-
Paragraph 0071; 0072; 0073
(2016/10/09)
-