Methods and compositions, and components comprising the compositions, are disclosed relating to improved resin-based adhesives comprising encapsulating at least a catalyst compound. Further methods and compositions are disclosed relating to encapsulated catalysts in uncured resin-based adhesives, said encapsulated catalysts configured to release the catalyst compound and cure the uncured resin-based adhesive on-demand.

A flow reactor system and methods having tubing useful as polymerization chamber. The flow reactor has at least one inlet and at least one mixing chamber, and an outlet. The method includes providing two phases, an aqueous phase and a non-aqueous phase and forming an emulsion for introduction into the flow reactor.

Processes of making catalyst compositions are provided. In an exemplary embodiment, the processes include modifying an organoaluminum compound with a modifier that decreases the initial reducing strength of the organoaluminum compound, where the modifier can be an ether, an anhydride, an amine, an amide, a silicate, a silyl ether, a siloxane, an ester, a carbonate, a urea, a carbamate, a sulfoxide, a sulfone, a phosphoramide, or a combination thereof. The processes further include adding a transition metal complex to the mixture of the organoaluminum compound and the modifier; and obtaining a catalyst composition including the organoaluminum compound and the transition metal complex.

Catalyst systems having both a metallocene catalyst component and a Ziegler-Natta component are disclosed. Such catalyst systems can contain a metallocene compound, an activator-support, an organoaluminum compound, and a Ziegler-Natta component comprising titanium supported on magnesium chloride.

The present invention relates to a method for monitoring a control parameter of a polymerization reaction mixture in heterogeneous phase comprising the following steps: (a) acquiring at least one NIR reflectance spectrum of said mixture; (b) calculating a value of said control parameter by means of a calibration curve which correlates the NIR reflectance spectrum with the values of said control parameter measured with a reference measurement method. The present invention also relates to an apparatus for implementing said method.

This invention relates to a polymerization process for forming polymer comprising: contacting (typically in a solution or slurry phase), a monomer and a catalyst system in a reaction zone comprising at least one spiral heat exchanger and recovering polymer, wherein the monomer, the catalyst system and the polymer flow through the at least one spiral heat exchanger in a cross-flow direction relative to spirals of the at least one spiral heat exchanger.

Provided is a curing agent for a three-dimensional shaped product including a compatible material that is compatible with a molded article forming agent for forming a three-dimensional shaped product, and a curing material that cures the molded article forming agent.

Provided is a curing agent for a three-dimensional shaped product including a compatible material that is compatible with a molded article forming agent for forming a three-dimensional shaped product, and a curing material that cures the molded article forming agent.

Disclosed is a vinyl polymer powder which is superior to dispersibility to curable resin compositions, which immediately gives a gel state for curable resin compositions by short-time heating with predetermined temperature, which is with high ion concentration, and which is useful as a pre-gel agent suitable for fields of electronic materials, to provide a curable resin composition comprising the vinyl polymer powder, and to provide a cured substance of the curable resin composition. The vinyl polymer powder of the present invention has an acetone-soluble component of 30% by mass or more, mass average molecular weight of the acetone-soluble component of 100,000 or more, a content of an alkali metal ion of 10 ppm or less, and a volume average primary particle size (Dv) of 200 nm or more.

According to an embodiment of the present invention, there is provided a novel fluorene-based compound and a photopolymerization initiator using the fluorene-based compound. The fluorene-based compound according to an embodiment of the present invention is represented by the general formula (1). A photopolymerization initiator having additionally high sensitivity can be provided by using the fluorene-based compound. In addition, a photopolymerization initiator that can impart additionally excellent characteristics can be provided by appropriately selecting, for example, a substituent.