公开(公告)号：US3928264A

公开(公告)日：1975-12-23

申请号：US47078874

申请日：1974-05-17

Applicant: MONSANTO CO

Inventor： YOUNG JR RAYMOND H ,  MARKHART ALBERT H ,  MARTINS JOSEPH G

IPC: C08G8/28 ,  C08L101/00 ,  C08L61/08

CPC classification number: C08L101/00 ,  C08G8/28 ,  Y10T428/31877 ,  Y10T428/31957 ,  Y10T428/31967 ,  C08L61/14

Abstract: This invention relates to polymeric ultraviolet light stabilizers which are the esterification products of (A) phenolformaldehyde condensates, which have at least 12.5 mol % of the positions ortho to the esterifiable hydroxyl group unsubstituted, and (B) a compound capable of esterification with the phenol formaldehyde condensate which contains at least one ring of six carbon atoms characterized by having benzenoid unsaturation. Upon exposure to ultraviolet light, the exposed portion of the ester rearranges to form a polymeric compound which is a barrier to ultraviolet light.

Abstract translation: 本发明涉及作为（A）苯酚 - 甲醛缩合物的酯化产物的聚合紫外光稳定剂，其具有至少12.5mol％未被取代的可酯化羟基的位置，和（B）能够与 苯酚甲醛缩合物含有至少一个六个碳原子的环，其特征在于具有苯类不饱和键。 在暴露于紫外光下，酯的暴露部分重新排列形成对紫外线的屏障的聚合物。

公开(公告)号：US3418277A

公开(公告)日：1968-12-24

申请号：US58743866

申请日：1966-10-18

Applicant: MONSANTO CO

Inventor： COHEN SAUL M ,  YOUNG JR RAYMOND H

IPC: C07C309/42 ,  C07C317/22 ,  C07F7/08 ,  C08G75/20

CPC classification number: C07C309/42 ,  C07C317/22 ,  C07F7/0803 ,  C08G75/20