On April 8, 2021, synthetic resin association standardizes technical committee to examine the conference to be held smoothly in Hainan big talk. Examine meeting by round mark appoint sword director chairs Chen Min, vice-chairman of He Xiang of synthetic resin association and secretary-general of Di Jiye of branch of colophony of not saturated polyester introduced institute organization level respectively the current situation and make a plan next. This second examine on the meeting, ginseng of China prosperous company makes up " colophony of not saturated polyester is banned use and be restricted to use level of corporeal set limit to " with chief editor " low styrene volatilizes styrene of colophony of not saturated polyester volatilizes standard of set limit to " the newspaper approves draft through examining, be about to release inside year carry out.

Of laws and regulations of stringent with each passing day law of safe environmental protection carry out stage by stage, to colophony of not saturated polyester (UPR) production and application put forward new, the requirement of higher level. China prosperous company regards synthetic resin association as unit of director of chapter of colophony of not saturated polyester, the relevant company that there was social responsibility early with respect to leading tissue industry 2017 has sufficient market survey and technical communication, add blame cross-linking dissolvent to bring about product quality to drop at will in the light of industry of colophony of not saturated polyester reach styrene to be discharged without the organization wait for outstanding environmental protection issue, plan to establish standard of relevant set limit to, raise the quality of finished products of colophony of not saturated polyester, environment pollution in reducing downstream products company to make a process and personnel health question, for health of catenary of industry of not saturated colophony, can develop continuously offer powerful technology to prop up, drive progress of technology of industry of colophony of not saturated polyester, safeguard industry health stabilizes development. This " colophony of not saturated polyester is banned use and be restricted to use level of corporeal set limit to " benzene of much chromium of the cadmium in setting colophony of not saturated polyester, lead, mercuric, 6 price, bromiccer couplet (PBBs) , much bromiccer 2 benzene aether (PBDEs) , benzene, toluene, send sample the test that have at place with time base, benzene of much chromium of cadmium, lead, mercuric, 6 price, bromiccer couplet (PBBs) , much bromine 2 benzene aether (PBDEs) the correction instruction that the test all did not exceed Ⅱ of appendix of 2011/65/EU of instruction of European Union RoHS as a result (EU) the bounds of 2015/863 is worth a requirement. Accordingly, expert of examine and verify thinks this standard can suggest to rise consistently for the standard. China prosperous company is " low styrene volatilizes styrene of colophony of not saturated polyester volatilizes standard of set limit to " the unit that draft, responsibility of carry out travel and take on, the low VOCs that drives UPR changes development. In process of standard work out, offer series test and verify actively for relevant enterprise it is sample, good to do technology of test and verify serves, share the experimental positive result that accumulates for years each big colophony enterprise to have test and application. Branch of research and development of China prosperous company established special subject to tackle key problem 2013 group, focusing low styrene volatilizes depressor and without styrene resinous research and development and application, published many paper early or late, form multinomial. Collect this in arranging experimental data process, all test report that provides to each enterprise again and experimental data have statistic analysis and than be opposite, those who be standard content is perfect provide a basis with the dependability of technical index. Manager of research and development of Wang Xiaodong deputy summation Dr. Liu Hua attended this examination meeting of standard rejoin. Liu Hua introduced " low styrene volatilizes styrene of colophony of not saturated polyester volatilizes standard of set limit to " the work out explains and " experiment test and verify reports " , the set to condition of method of test project, experiment, experiment undertook Wang Xiaodong explain, low to “ volatilize eventuate of ” index test and verify what set “ volatilizes absolutely quantity ” is less than 6% , “ volatilizes relatively quantity ” is less than 50% became detailed explanation, the methodological repeatability that proves this standard sets is good, it is accurate, reliable. Product introduction 　 is aimed at colophony of not saturated polyester and annulus oxygen vinyl related the difference of ester colophony polarity, the styrene that China prosperous company parted to give out different consistence 2015 volatilizes depressor MERICAN 601 and MERICAN 602, distinguish at common candle kind auxiliary, 601 with the element of 602 contain in the structure a few not saturated Shuang Jian, because this can make an organic whole with colophony solidify eventually, restraining while styrene volatilizes, it is good to can make goods surface enrages drying again, effect of the union between the layer is good at the same time. The accretion of thousand 3~5 is measured can make volatilize of the styrene in colophony relatively the quantity reduces 50% above, already batch stability uses colophony of each big not saturated polyester and annulus oxygen vinyl in ester colophony system. Hua Changju closes matter 　 is dedicated high quality colophony 63 years