Sifee:
Cuntooyinka ka koobanethers cellulose
Goobta farsamada:
Hal-abuurka hadda wuxuu la xiriiraa ka kooban cunto ka kooban ethers cellulose.
Farsamada asalka ah:
Waxaa muddo dheer la ogaa in lagu daro ether-ka cellulose ee ka kooban cuntada, gaar ahaan halabuurka cuntada la warshadeeyey, si loo hagaajiyo sifooyin kala duwan sida xasilloonida dhalaalidda iyo/ama hufnaanta, ama si loo hagaajiyo adkaanta inta lagu jiro wax soo saarka, si farsamaysan ama shiilan. Codsiga rukhsadda Britishka GB 2 444 020 wuxuu daaha ka qaadaa halabuurka cuntada oo kale oo ka kooban eter cellulose nonionic sida methylcellulose, hydroxypropyl cellulose, ama hydroxypropyl methylcellulose. Methylcellulose iyo hydroxypropyl methylcellulose waxay leeyihiin sifooyin gelling ah oo dib loo rogi karo. Waxaa si gaar ah loo qeexay in marka xal aqueous ah ee methylcellulose ama hydroxypropyl methylcellulose la kululeeyo, kooxda hydrophobic methoxy ee ku yaala molecule ay maraan fuuqbax, oo waxay noqotaa gel aqueous. Dhanka kale, marka jelka ka soo baxa la qaboojiyo, kooxaha methoxy hydrophobic ayaa dib loo fuuqeeyaa, halkaas oo jelku uu ku soo laabto xalka asalka ah ee aqueous.
Patent European EP I 171 471 waxay daaha ka qaadaysaa methylcellulose oo aad waxtar ugu leh cuntooyinka adag sida khudradda adag, hilibka, iyo baastada soybean sababtoo ah kororka xoogga jel. methylcellulose-ku waxa uu sii wanaajiyaa adkaysi iyo isku xidhnaanta ka kooban cuntada adag, taas oo siinaya dareen qaniinyo wanaagsan macaamiisha cunaya cuntada la warshadeeyey. Marka lagu milmo biyo qabow (tusaale, 5°C ama ka hooseeya) ka hor ama ka dib marka la isku daro maaddooyinka kale ee ka kooban cuntada, soy methylcellulose waxa uu gaaraa awoodiisa buuxda si uu u bixiyo cuntooyin adag oo adag oo isku xidhan. karti.
Si kastaba ha ahaatee, xaaladaha qaarkood, isticmaalka biyaha qabow waa mid aan ku habboonayn soo saaraha ka kooban cuntada. Sidaa awgeed, waxa ay noqon lahayd mid la jecel yahay in la bixiyo ethers cellulose kuwaas oo bixiya cuntooyin adag oo isku dhafan oo leh qallafsanaan wanaagsan iyo isku xirnaan xitaa marka ethers cellulose ay ku milmaan biyaha iyagoo leh heerkulka qolka.
Hydroxyalkyl methylcellulose sida hydroxypropyl methylcellulose (oo sidoo kale loo yaqaan inay faa'iido u leedahay isku-dhafka cuntada) ayaa la og yahay inay leedahay module kaydinta hooseeya marka loo eego methylcellulose. Hydroxyalkyl methylcelluloses oo muujinaya modules kaydinta hooseeya ma sameeyaan jeel adag. Heerarka sare ayaa loo baahan yahay xitaa jeliyeyaasha daciifka ah (Haque, A; Richardson; Morris, ER, Gidley, MJ iyo Caswell, DC ee Carbohydrate Polymers22 (1993) p.175; iyo Haque, A iyo Morris, ER1nCarbohydrate Polymers22 (1993) p.161).
Marka hydroxyalkyl methylcelluloses sida hydroxypropyl methylcellulose (oo muujiya modules kaydinta hooseeya) lagu daro halabuurka cuntada adag, engegnaantooda iyo isku xidhnaantoodu kuma filna codsiyada qaarkood.
Waa shay ka mid ah hal-abuurka hadda jira si loo bixiyo hydroxypropyl methylcellulose, gaar ahaan hydroxypropyl methylcellulose, taas oo u dhiganta hydroxypropyl methylcelluloses loo yaqaan, sida hydroxypropyl methylcellulose Taa bedelkeeda, isku-dhafka cuntada adag waxaa lagu bixiyaa adkeyn iyo / ama isku-duubni.
Shayga la door bidayo ee ikhtiraacan hadda jira waa in la bixiyo hydroxypropyl methylcellulose, gaar ahaan hydroxypropyl methylcellulose, kaas oo bixiya ka kooban cunto adag oo adag iyo / ama isku xirnaanta xitaa marka hydroxyalkyl methylcellulose la mid ah waa run marka lagu milmo biyaha leh heerkulka qolka.
Waa yaab, waa la helayhydroxyalkyl methylcellulose, gaar ahaan hydroxypropyl methylcellulose, waxaa loo isticmaali karaa diyaarinta Marka la barbar dhigo halabuurka cuntada adag, ka kooban cunto adag oo la yaqaan ayaa leh qallafsanaan sare iyo / ama isku xirnaan.
Waxa kale oo la yaab leh, waxa la ogaaday in hydroxypropyl methylcelluloses qaarkood, gaar ahaan hydroxypropyl methylcellulose, aysan u baahnayn in lagu milmo biyo qabow si ay u bixiyaan cuntooyin adag oo adag iyo / ama isku xiran.
Waqtiga boostada: Abriil-28-2024