摘要:
A thinner composition is effective in removing a variety of photoresists, and includes propylene glycol mono-methyl ether acetate, ethyl 3-ethoxy propionate and at least one of &ggr;-butyro lactone and propylene glycol mono-methyl ether. The thinner composition can selectively strip a photoresist coated on a backside and at an edge portion of a substrate, as well as a photoresist coated on a whole front surface of the substrate.
摘要:
A photoresist stripper composition is made up of a mixture of an acetic acid ester, &ggr;-butyrolactone (GBL), and a non-acetate ester or a poly alkyl alcohol derivative. The acetic acid ester may be at least one of n-butyl acetate, amyl acetate, ethyl aceto-acetate, and isopropyl acetate. The non-acetate ester may be at least one of ethyl lactate (EL), ethyl-3-ethoxy propionate (EEP) and methyl-3-methoxy (MMP). The poly alkyl alcohol derivative may be at least one of propylene glycol monomethyl ester (PGME) and propylene glycol monomethyl ester acetate (PGMEA).
摘要:
A thinner composition includes propylene glycol ether acetate, methyl 2-hydroxy-2-methyl propionate, and an ester compound such as ethyl lactate, ethyl 3-ethoxy propionate or a mixture thereof.
摘要:
A thinner composition includes propylene glycol ether acetate, methyl 2-hydroxy-2-methyl propionate, and an ester compound such as ethyl lactate, ethyl 3-ethoxy propionate or a mixture thereof.
摘要:
A thinner composition includes propylene glycol ether acetate, methyl 2-hydroxy-2-methyl propionate, and an ester compound such as ethyl lactate, ethyl 3-ethoxy propionate or a mixture thereof.
摘要:
A .beta.-methylcarbapenem compound of formula (I), a salt or an ester thereof, a process for the preparation thereof and a anti-bacterial composition containing same: ##STR1## wherein: R.sup.1 is a C.sub.1-6 alkyl, C.sub.2-6 alkenyl, cycloalkyl, aryl or heterocyclic aryl group.