Dimer acid, feem ntau hu ua dimer fatty acid, yog ib qho sib xyaw ua ke, cov kua dej tsis muaj xim. Nws qhov txheeb ze ntom ntom yog 0.95, thiab nws qhov chaw flash yog nyob nruab nrab ntawm 280-350 degree . Dimer acid yog soluble nyob rau hauv yuav luag tag nrho cov kuab tshuaj xws li acetone, ethanol, ether, aliphatic, naphtha, thiab lwm yam, tab sis insoluble nyob rau hauv dej. Dimer acid yog ib qho tseem ceeb roj thiab roj chemical, uas yog dav siv nyob rau hauv kev lag luam xws li coatings, surfactants, lubricants, printing inks, thiab kub yaj adhesives. 12
High-purity dimer acid yog tau los ntawm kev siv cov thev naus laus zis sib cais kom tshem tawm cov impurities xws li monoacids, trimers, thiab polymeric acids hauv cov pa dimer acid, kom cov ntsiab lus ntawm dimers hauv dimer acid nce mus txog ntau dua 90%. High-purity dimer acid muaj cov yam ntxwv ntawm lub teeb xim, siab purity, thiab uniform molecular hnyav tis. Nws tuaj yeem siv los ua ke polyamide resins ua cov ntaub ntawv zoo rau cov qib siab inks, txheej, thiab kub yaj nplaum.
Cov khoom siv raw ntawm dimer acid feem ntau yog {{{0}}} carbon unsaturated fatty acids, xws li oleic acid thiab linoleic acid, uas yog tsim los ntawm kev sib nrig sib polymerization ntawm molecules. Cov txheej txheem tsim muaj xws li thermal polymerization thiab av nplaum catalysis. Cov khoom lag luam polymerization yog muaj dimer acid, uas muaj 3% monoacid, 75% dimer acid thiab 22% trimer acid. Cov khoom tau los ntawm molecular distillation los yog nyias zaj duab xis evaporation yog high-zoo dimer acid, uas muaj 0.2% mus rau 1.5% monoacid, 93.5% mus rau 97% dimer acid thiab 3% mus rau 5% trimer acid.