公开(公告)号：US20240294732A1

公开(公告)日：2024-09-05

申请号：US18660006

申请日：2024-05-09

Applicant: Cytec Industries Inc.

Inventor： Jerry Mon-Hei Eng ,  Ram B. Gupta ,  Xin Li ,  Jian-Yang Cho ,  Kyle O'Connor ,  Thomas Santamaria ,  Min Wang

IPC: C08K5/00 ,  C08K5/132 ,  C08K5/3435 ,  C08K5/3462 ,  C08K5/3492 ,  C08K5/529 ,  C08L23/06 ,  C08L23/12

CPC classification number: C08K5/005 ,  C08K5/132 ,  C08K5/3435 ,  C08K5/3462 ,  C08K5/3492 ,  C08K5/529 ,  C08L23/06 ,  C08L23/12 ,  C08L2201/08

Abstract: Polymer compositions for making a stabilized polymeric articles that are resistant to discoloration upon exposure to UV-C light having: (i) an organic polymeric material; and (ii) a hindered phenol, organic phosphite, or a combination thereof, with the provisos that: (a) the OH group on the aromatic ring of the hindered phenol is flanked by two tertiary hydrocarbyl groups, and (b) the organic phosphite does not have any-OAr group linked directly to the P atom of the phosphite, wherein Ar represents an unsubstituted or substituted aryl group, are provided herein. Reduced discoloration is associated with the use of specific hindered phenols and the organic phosphites compared to other hindered phenols and organic phosphites, even in the absence of other polymer additives including UV absorbers, hindered amine light stabilizers (HALS), metal oxides and/or barium salts. Methods of reducing discoloration of an organic polymeric material upon exposure to UV-C light are also provided, wherein such methods include the step of adding to the organic polymeric material a stabilizing amount of hindered phenol, organic phosphite, or a combination thereof.

公开(公告)号：US20220169828A1

公开(公告)日：2022-06-02

申请号：US17535060

申请日：2021-11-24

Applicant: CYTEC INDUSTRIES INC.

Inventor： Jerry Mon-Hei ENG ,  Ram B. Gupta ,  Xin Li ,  Jian-Yang Cho ,  Kyle O'Connor ,  Thomas Santamaria ,  Min Wang

IPC: C08K5/00 ,  C08L23/06 ,  C08L23/12 ,  C08K5/132 ,  C08K5/529 ,  C08K5/3492 ,  C08K5/3435 ,  C08K5/3462

Abstract: Polymer compositions for making a stabilized polymeric articles that are resistant to discoloration upon exposure to UV-C light having: (i) an organic polymeric material; and (ii) a hindered phenol, organic phosphite, or a combination thereof, with the provisos that: (a) the OH group on the aromatic ring of the hindered phenol is flanked by two tertiary hydrocarbyl groups, and (b) the organic phosphite does not have any —OAr group linked directly to the P atom of the phosphite, wherein Ar represents an unsubstituted or substituted aryl group, are provided herein. Reduced discoloration is associated with the use of specific hindered phenols and the organic phosphites compared to other hindered phenols and organic phosphites, even in the absence of other polymer additives including UV absorbers, hindered amine light stabilizers (HALS), metal oxides and/or barium salts. Methods of reducing discoloration of an organic polymeric material upon exposure to UV-C light are also provided, wherein such methods include the step of adding to the organic polymeric material a stabilizing amount of hindered phenol, organic phosphite, or a combination thereof.