3, the DCPD that DCPD quality needs to although purity is inferior,rise can produce UPR with a future life, but because purity heals low the pollution that causes to the environment heals serious, and product color also is met deeper. It is good that the DCPD product of Japan and company of British carapace card holds an amount, its technology index sees a table 1, watch 2. According to net of not saturated colophony (Www.upr-e.cn) expert introduces, DCPD index of abroad is not too high to reach, company of domestic DCPD production is OK this is a target, improve product quality hard, be achieved as soon as possible or surmount international advanced level. The raw material norms that expresses 1 Japanese DCPD

Project

Norms

The exterior

Colorless and transparent

Chroma (APHA)

100 the following

Specific gravity (<st1:chmetcnv w:st="on" unitname="℃" source℃ of Value="20" Hasspace="False" Negative="False" Numbertype="1" Tcsc="0">20/<st1:chmetcnv w:st="on" unitname="℃" source℃ of Value="20" Hasspace="False" Negative="False" Numbertype="1" Tcsc="0">20℃ of Value="20" Hasspace="False" Negative="False" Numbertype="1" Tcsc="0">20

0.97 ～ 0.985

Purity (W ton % )

> 95

Other 2 Xi kind (W ton % )

<5

Express W of index of technology of DCPD of company of card of 2 England carapace ton %

Project

Index

The annulus the fifth of the ten Heavenly Stem that can recover from an illness 2 Xi

≥94.0

The methylic annulus the fifth of the ten Heavenly Stem that can recover from an illness 2 Xi

≤2.0

The blame that can recover from an illness is annular 2 olefin

≤1.5

Benzene

≤0.5

Density (<st1:chmetcnv w:st="on" unitname="℃" source℃ of Value="30" Hasspace="False" Negative="False" Numbertype="1" Tcsc="0">30) / G? Ml^{- 1}

0.965 ～ 0.98

Colour and lustre / P ton - Co colorimetric law

≤100

Moisture

≤0.05