Phenolic Resin 551

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Details

Phenolic  Resin  551  is  a  heat  reactive,alkyl  phenolic  resin  formulated  for  use  in  Polychlo- roprene  based  contact  adhesives.It   imparts  low   initial  viscosity  and  excellent  viscosi-  ty-stability to  adhesives  of this  type.Phenolic  Resin 551 can  also  beused  with  the  adhe- sive  grades  of  chloroprene  where  good  bond  strength,both  at  room  and  elevated  temperatures.


SPECIFICATION

Commodity
型号:

Phenolic resin 551 
酚醛树脂551

Appearance
外观

Faint yellow platy or lump
 淡黄色片状或块状

Softening point
软化点(环球法):

100-110℃

Hydroxymethyl (%)羟甲基含量:

12-16%

Moisture水分:

<1.0%

Ash content灰分:

<0.3%


SOLUBILITY

Phenolic  Resin  551  is  soluble  in  aromatic  and  aliphatic  hydrocarbons,esters,ketones, and  partially  soluble   in  higher  alcohols.


APPLICATION:

The  primaryfunction  of  Phenolic   Resin  551in   polychloroprene  contact  adhesives   is  to impart  low  initial  viscosity  and   maintain  viscosity  stability.Adhesives  of  this  type  depend on  an   interaction  oftheelastomer  and   metal  oxides  for  the  developmentof  their   high  co- hesive  strength  at  room  and  elevated  temperatures.In  adhesives  based  on  polychloro-prene,551  gives  good  bond  strength,both  at  room  and  elevated  temperatures. 


STORAGE:

For best  results, Phenolic  Resin  551  should  be  stored  wheretemperatures  do  not  exceed 869F for extended  periods  of  time.Aswith  all   phenolic  resins,Phenolic  Resin  551  will

become  darker  with age.