The present invention relates to the synthesis of polymer polyols in unsaturated polyols as liquid phase, polymer polyols and their use.

Processes for preparing a polymer polyol (PMPO) in which a base polyol is continuously produced in a continuous base polyol reactor, the base polyol is continuously discharged from the continuous base polyol reactor; the base polyol is continuously introduced to a continuous PMPO reactor, which is different from the continuous base polyol reactor, and PMPO is continuously removed from the PMPO reactor. Production plant configured to carry out such processes are also described.

The present invention relates generally to amine curing agents compositions useful in formulation additives, compositions comprising systems, resin formulations, and the use of these compositions in methods of making objects by additive manufacturing using 3D printing methodologies.

A compound is described having following formula: (I) Also described is a mixture of compounds comprising the reaction product of i) a urethane compound comprising a perfluorooxyalkyl moiety and at least two (meth)acryl groups; and ii) a silane compound comprising hydrolysable groups and a group selected from amine or mercapto group; wherein i) and ii) are reacted at an equivalent ratio of excess compound i) such that (meth)acryl groups remain unreacted. Methods and articles are also described.

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Provided herein is a resin product useful for the production of three-dimensional objects by additive manufacturing, and methods using the same. The resin may include a reactive blocked prepolymer comprising a prepolymer blocked with reactive blocking groups; a polyol; a photoinitiator; and at least one organometallic catalyst. A packaged product useful for the production of three-dimensional objects by additive manufacturing, the product comprising a single container having a single chamber and a resin in the chamber with all components mixed together, is also provided.

Provided herein is a resin product useful for the production of three-dimensional objects by additive manufacturing, and methods using the same. The resin may include a reactive blocked prepolymer comprising a prepolymer blocked with reactive blocking groups; a polyol; a photoinitiator; and at least one organometallic catalyst. A packaged product useful for the production of three-dimensional objects by additive manufacturing, the product comprising a single container having a single chamber and a resin in the chamber with all components mixed together, is also provided.

Provided herein is a resin product useful for the production of three-dimensional objects by additive manufacturing, and methods using the same. The resin may include a reactive blocked prepolymer comprising a prepolymer blocked with reactive blocking groups; a polyol; a photoinitiator; and at least one organometallic catalyst. A packaged product useful for the production of three-dimensional objects by additive manufacturing, the product comprising a single container having a single chamber and a resin in the chamber with all components mixed together, is also provided.

Provided herein is a resin product useful for the production of three-dimensional objects by additive manufacturing, and methods using the same. The resin may include a reactive blocked prepolymer comprising a prepolymer blocked with reactive blocking groups; a polyol; a photoinitiator; and at least one organometallic catalyst. A packaged product useful for the production of three-dimensional objects by additive manufacturing, the product comprising a single container having a single chamber and a resin in the chamber with all components mixed together, is also provided.

A resin composition for primary coating of an optical fiber contains a photopolymerizable compound including a urethane (meth)acrylamide, and a photopolymerization initiator, and the urethane (meth)acrylamide has a (meth)acrylamide group at at least one end of a urethane bond.

A resin composition for secondary coating of an optical fiber includes a photopolymerizable compound including a urethane (meth)acrylamide, and a photopolymerization initiator. The urethane (meth)acrylamide has a (meth)acrylamide group at at least one end of a urethane bond.