公开(公告)号：US20210332178A1

公开(公告)日：2021-10-28

申请号：US17234019

申请日：2021-04-19

Applicant: Carbon, Inc.

Inventor： Andrew Gordon Wright

IPC: C08G18/48 ,  C08G18/73 ,  C08G18/16

Abstract: Provided herein is a dual cure resin useful for the production of an object by additive manufacturing, comprising or consisting essentially of: (a) a photoinitiator; (b) not more than 5, 10 or 20 ppm of a polyurethane catalyst (e.g., tin, tertiary amine, bismuth, zinc, zirconium, or nickel catalysts); (c) a polyol; (d) free (i.e., unblocked) polyisocyanate; and (e) blocked polyisocyanate, the isocyanate groups of which are blocked by reaction with an amine (meth)acrylate blocking agent. Methods of making an object with the resin are also provided.

公开(公告)号：US20200174367A1

公开(公告)日：2020-06-04

申请号：US16615446

申请日：2018-06-07

Applicant: Carbon, Inc.

Inventor： Kai Chen ,  Andrew Gordon Wright ,  Mu San Zhang

IPC: G03F7/029 ,  B33Y10/00 ,  B33Y70/00 ,  B29C64/129 ,  C09D11/101 ,  C09D11/102 ,  C08G18/12

Abstract: Provided herein is a method of forming a three-dimensional object in which the polymerizable liquid includes a mixture of (i) a light polymerizable first component, and (ii) a heat polymerizable second component; the heat polymerizable second component comprising (i) a first blocked reactive constituent that is blocked with a volatile blocking group, and optionally (ii) a curative. Upon heating a formed three-dimensional intermediate sufficiently, the volatile blocking group is cleaved and vaporizes out of the three-dimensional intermediate, to form the three-dimensional object. Also provided is a three-dimensional object produced by the method. Further provided is a polymerizable liquid composition useful for carrying out the method, and prepolymers and monomers useful for the polymerizable liquid composition.