According to announcement of bureau of national intellectual property, industrial development Inc. acquires Zhejiang Wei bit the name is “ button of a kind of colophony and “ of its preparation method, CN115505113B of accredit announcement date, application date is in June 2021.

Patent summary shows, this invention provided the preparation means of button of a kind of colophony, include: Get together frit melt PET and flexible enlarge catenary agent has reaction; Will flexible the colophony of modified gets together beforehand body and not saturated n duality are acerbity / acid anhydride undertakes ester converts reaction; Body of van of colophony of not will saturated polyester and thinner, block gets together the agent has reaction; Preparation of not will saturated colophony gets colophony button. This invention is passed choose oneself 2 acid are mixed 2 formic acid regard a benzene as raw material of not saturated resinous, use enlarge catenary agent to undertake to colophony modified is handled at the same time, make colophony structure finally medium have tigidity and flexible catenary paragraph structure, have already taller extend gender and rupture percentage elongation, also have better impact resistance. This invention uses PET plastic bottle to reclaim the colophony button with the can admirable impact resistance that recycle makes, can realize recycle of loop of PET plastic bottle already, satisfy button to be in again the functional sex demand that when dress is used on complementary makings, must have and impact resistance can ask. This invention still offerred button of a kind of colophony.