公开(公告)号：US20200255333A1

公开(公告)日：2020-08-13

申请号：US16760476

申请日：2018-11-05

Applicant: DSM IP Assets B.V.

Inventor： Huimin CAO ,  Kangtai REN ,  Mark PEPELS ,  Johan Franz Gradus Antonius JANSEN

IPC: C03C25/285 ,  C03C25/1065 ,  G02B6/44

Abstract: The present invention is directed to water-swellable, radiation curable compositions suitable for use in coating water-blocking fibers, such as optical fibers. The present invention is further directed to fibers, including optical fibers, which are coated with water-swellable exterior coatings that are configured to buckle and detach from the associated fiber to facilitate superior performance in longitudinal water-blocking testing. Also claimed and described are methods of applying such water-swellable coatings to optical fiber coatings. Further claimed and described are buffered bundles of fibers including at least one optical fiber that is coated with a water-swellable, radiation curable coating to ensure superior longitudinal water blocking performance.

公开(公告)号：US20180163075A1

公开(公告)日：2018-06-14

申请号：US15329633

申请日：2015-08-17

Applicant: DSM IP ASSETS B.V.

Inventor： Kangtai REN ,  Huimin CAO ,  Wendell Wayne CATTRON ,  Robin Papachristopoulos

IPC: C09D133/10 ,  C08F2/48 ,  C03C25/1065 ,  C03C25/326 ,  C08F222/10 ,  C08L75/14

CPC classification number: C09D133/10 ,  C03C25/1065 ,  C03C25/26 ,  C03C25/285 ,  C03C25/326 ,  C08F2/48 ,  C08F216/125 ,  C08F222/1006 ,  C08F2222/1013 ,  C08F2222/1086 ,  C08L75/14 ,  C09D4/00 ,  C08F2222/102

Abstract: Described herein is a method for coating optical fiber where the coating has been cured by application of a source of monochromatic actinic radiation, such as a light emitting diode, wherein the coating contains a urethane(meth)acrylate oligomer; a (meth)acrylate diluent monomer; a diluent monomer having an electron donating group adjacent to the vinyl group, such as a vinyl ether monomer; and a photoinitiator. Also described are compositions which are capable of undergoing photopolymerization when coated on an optical fiber and when irradiated by a light emitting diode (LED) with improved surface cure and reduced yellowing. Also described are the coated optical fibers produced by such processes and compositions.