ʻO ka ʻokoʻa ma waena o 1,2-propanediol a me 1,3-propanediol i nā mea hoʻonani

ʻO ka propylene glycol kahi mea āu e ʻike pinepine ai i ka papa inoa o nā mea hoʻonani no ka hoʻohana ʻana i kēlā me kēia lā. Ua kapa ʻia kekahi he 1,2-propanediol a ʻo kekahi he1,3-propanediol, no laila he aha ka ʻokoʻa?
ʻO 1,2-Propylene glycol, CAS No. 57-55-6, ʻano molekala C3H8O2, he mea hoʻohui kemika, hiki ke hui pū ʻia me ka wai, ka ethanol a me nā mea hoʻoheheʻe organik he nui. He wai ʻāwili ʻole ia ma ke ʻano maʻamau, kokoke i ka ʻala ʻole a ʻono iki i ka ʻala maikaʻi.
Hiki ke hoʻohana ʻia ma ke ʻano he mea hoʻomaʻū i nā mea hoʻonani, ka toothpaste a me ke kopa me ka glycerin a i ʻole sorbitol. Hoʻohana ʻia ia ma ke ʻano he mea hoʻomaʻū a hoʻohālikelike i nā kala lauoho a ma ke ʻano he mea antifreeze.
1,3-PropyleneʻO glycol, CAS No. 504-63-2, ʻo ke ʻano molekala ʻo C3H8O2, he wai ʻole kala, ʻala ʻole, paʻakai, hygroscopic viscous, hiki ke oxidized, esterified, hui pū ʻia me ka wai, hui pū ʻia i loko o ka ethanol, ether.
Hiki ke hoʻohana ʻia i ka synthesis o nā ʻano lāʻau lapaʻau he nui, polyester PTT hou, nā mea waena lāʻau lapaʻau a me nā antioxidants hou. ʻO ia ka mea maka no ka hana ʻana o ka polyester unsaturated, plasticizer, surfactant, emulsifier a me ka emulsion breaker.
Loaʻa i nā mea ʻelua ke ʻano molekala like a he mau isomers lāua.
Hoʻohana ʻia ka 1,2-Propylene glycol ma ke ʻano he mea antibacterial a i ʻole he mea hoʻolaha komo i loko o nā mea hoʻonani i nā kiʻekiʻe kiʻekiʻe.
Ma nā ʻāpana haʻahaʻa, hoʻohana pinepine ʻia ia he moisturizer a mea hoʻomaʻemaʻe paha.
Ma nā ʻāpana haʻahaʻa, hiki ke hoʻohana ʻia ma ke ʻano he pro-solvent no nā mea hana.
He ʻokoʻa loa ka hoʻonāukiuki ʻana o ka ʻili a me ka palekana ma nā ʻano like ʻole.
Hoʻohana nui ʻia ka 1,3-Propylene glycol ma ke ʻano he mea hoʻoheheʻe i nā mea hoʻonani. He mea hoʻoheheʻe moisturizing polyol organik ia e kōkua i nā mea hoʻonani e komo i loko o ka ʻili.
ʻOi aku ka mana hoʻomaʻū o ia mea ma mua o ka glycerin, 1,2-propanediol a me 1,3-butanediol. ʻAʻohe ona pipili, ʻaʻohe manaʻo wela, a ʻaʻohe pilikia hoʻonāukiuki.
ʻO nā ʻano hana nui o 1,2-propanediol:
1. Ke ʻano hoʻoinu wai propylene oxide;
2. Ke ʻano hana hoʻomakeʻe catalytic pololei o ka propylene;
3. Ke ʻano hoʻololi Ester; 4. ke ʻano hana hana hydrolysis glycerol.
Hoʻopuka nui ʻia ka 1,3-Propylene glycol e:
1. Ke ʻano hana wai Acrolein;
2. Ke ʻano hana ʻokikene ʻetilena;
3. Ke ʻano hana hana hydrolysis Glycerol;
4. Ke ʻano hana microbiological.
ʻOi aku ke kumu kūʻai o 1,3-Propylene glycol ma mua o 1,2-Propylene glycol.1,3-PropyleneHe ʻoi aku ka paʻakikī o ka hana ʻana i ka glycol a he haʻahaʻa ka hua, no laila ke kiʻekiʻe nei kona kumukūʻai.
Eia nō naʻe, hōʻike kekahi ʻike he emi ka hoʻonāukiuki ʻana o 1,3-propanediol a emi ka ʻoluʻolu ʻole i ka ʻili ma mua o 1,2-propanediol, a hiki i ka pae o ka ʻole o ka hopena ʻoluʻolu ʻole.
No laila, i nā makahiki i hala iho nei, ua pani kekahi mau mea hana i ka 1,2-propanediol me 1,3-propanediol i nā mea hoʻonani e hōʻemi i ka ʻoluʻolu ʻole e hiki mai ana i ka ʻili.
ʻAʻole paha i hana ʻia ka ʻeha ʻili i hoʻokumu ʻia e nā mea hoʻonani e ka 1,2-propanediol a i ʻole 1,3-propanediol wale nō, akā hiki ke hana ʻia e nā kumu like ʻole. I ka hohonu ʻana o ka manaʻo o ka poʻe no ke olakino a me ka palekana o ka mea hoʻonani, e hoʻoikaika hou aku ka noi ikaika o ka mākeke i nā mea hana he nui e hoʻomohala i nā huahana ʻoi aku ka maikaʻi e hoʻokō i nā pono o ka hapa nui o ka poʻe aloha nani!