公开(公告)号：US3789043A

公开(公告)日：1974-01-29

申请号：US3789043D

申请日：1972-07-03

申请人： WESTVACO CORP

发明人： FALKEHAG S ,  BRADDON D

IPC分类号： C08L21/00 ,  C08D9/02 ,  C08D9/12

CPC分类号： C08L9/08 ,  C08K5/13 ,  C08L9/02 ,  C08L21/00 ,  C08L21/02 ,  C08L97/005 ,  C08L2666/26

摘要： ELASTOMERS MAY BE PROTECTED AGAINST ATMOSPHERIC DEGRADATION BY THE ADDITION THERETO OF 0.01 TO 5.0 PARTS BY WEIGHT, PREFERABLY 0.25 TO 2.0 PARTS, PER 100 PARTS OF ELASTOMER OF A MODIFIED LIGNIN STABILIZER. THE MODIFIED LIGNIN STABILIZERS ARE PRODUCED BY HEAT TREATING TECHNICAL LIGNINS IN THE PRESENCE OF A NUCLEOPHILE, SUCH THAT A PORTION OF THE ORIGINAL GUAICYL STRUCTURES ARE CONVERTED TO CATECHOLS VIA A DEMETHYLATION REACTION.

公开(公告)号：US3822225A

公开(公告)日：1974-07-02

申请号：US28890772

申请日：1972-09-14

申请人： WESTVACO CORP

发明人： BRADDON D ,  FALKEHAG S

IPC分类号： C08K5/524 ,  C08L21/00 ,  C08C13/08 ,  C08D11/04

CPC分类号： C08K5/524 ,  C08K5/51 ,  C08L7/00 ,  C08L9/06 ,  C08L9/08 ,  C08L21/00 ,  C08L21/02 ,  C08L97/005 ,  Y10S524/925 ,  C08L2666/26

摘要： STABILIZING COMPOSITIONS COMPRISING AT LEAST ONE TRIARYL PHOSPHITE, TRIALKYL PHOSPHITE OR MIXTURES THEREOF AND AT LEAST ONE MODIFIED LIGNIN, THE WEIGHT RATIO OF THE PHOSPHITE TO MODIFIED LIGNIN IS FROM 97/3 TO 10/90. THE MODIFIED LIGNINS ARE PRODUCED BY HEAT TREATING LIGNINS IN THE PRESENCE OF A NUCLEOPHILE, SUCH THAT A PORTION OF THE ORIGINAL GUAICYL STRUCTURES ARE CONVERTED TO CATHECHOLS VIA A DEMETHYLATION REACTION. ELASTOMERS MAY BE PROTECTED AGAINST ATMOSPHERIC DEGRADATION BY THE ADDITION THERETO OF 0.01 TO 5.0 PARTS BY WEIGHT, PERFERABLY 0.25 TO 2.0 PARTS, PER 100 PARTS OF ELASTOMER OF THE STABILIZING COMPOSITION.