Xylylene diisocyanate and its manufacturing method and benzene diformazan phenylenediamine carbamate and its store method

Xylylene diisocyanate and its manufacturing method and benzene diformazan phenylenediamine carbamate and its store method

  • CN 105,143,178 B
  • Filed: 03/28/2014
  • Issued: 08/24/2018
  • Est. Priority Date: 04/03/2013
  • Status: Active Grant
First Claim
Patent Images

1. the store method of benzene diformazan phenylenediamine carbamate, which is characterized in thatUnder 50~180 DEG C of heating, make it is relative to benzene diformazan phenylenediamine carbamate, by benzene diformazan phenylenediamine base formic acidBe sealed to when ester is filled into container spatial portion oxygen amount and benzene diformazan phenylenediamine carbamate in total oxygen of oxygen amount for dissolvingAmount is less than 100ppm, is thus preserved, so that with the total amount of impurity shown in following formula (1)~(4) based on quality criteriaRatio less than 100ppm contains impurity shown in following formula (1)~(4),

View all claims
    ×
    ×

    Thank you for your feedback

    ×
    ×