Synthesis of 1-Alkyl 3,5-Bis( -mercaptoacetoalkyl) Isocyanurates and Macrocyclic Disulfides Derived Thereof
摘要:
1-Alkyl 3,5-bis(omega-hydroxyalkyl) isocyanurates were reacted with mercaptoacetic acid to obtain 3,5-bis(omega-mercaptoacetoxyalkyl) isocyanurates whose oxidation gives rise to macrocyclic disulfides.
1-Methyl or 1-benzyl 3,5-bis(omega-bromoalkyl) isocyanurates with the alkyl chain comprising 3 through 6 methylene units were synthesized by the reaction of disodium methyl and benzyl isocyanurates with alpha,omega-dibromoalkanes. The reaction of disodium methyl and benzyl isocyanurates with ethylene chlorohydrin was used to obtain 1-methyl or 1-benzyl 3,5-bis(2-hydroxyethyl) isocyanurates whose treatment with PBr3 or SOCl2 gave the corresponding 1-alkyl 3,5-bis(2-haloethyl) isocyanurates. 1-Methyl and 1-benzyl 3,5-bis(chloromethyl) isocyanurates were prepared by treatment With SOCl2 of 1-methyl or 1-benzyl 3,5-bis(hydroxymethyl) isocyanurates obtained, in their turn, by condensation of methyl and benzyl isocyanurates with formaldehyde.
Methods of forming patterns using compositions for an underlayer of photoresist
申请人:Samsung Electronics Co., Ltd.
公开号:US10712662B2
公开(公告)日:2020-07-14
A method of forming a pattern is disclosed. The method includes preparing a composition that includes a solvent and a polymer including a repeating unit in which at least one isocyanurate unit having a first structure is connected to another isocyanurate unit having a second structure different from the first structure; applying the composition on a substrate to form an underlayer; forming a photoresist layer on the underlayer; etching the photoresist layer to form a photoresist pattern; and patterning the substrate using the photoresist pattern.
Alkylation of disodium benzyl and disodium methyl isocyanurates with beta,beta'-dichlorodiethyl and beta,beta'-dibromodiethyl ethers was used to prepare 1-benzyl and 1-methyl 3,5-bis[2-(2-haloethoxy)ethyl] isocyanurates whose reaction with thiourea followed by hydrolysis gave the corresponding 1-alkyl 3,5-bis[2(2-mercaptoethoxy)ethyl] isocyanurates. 1-Benzyl and 1-methyl 3,5-bis[2-(2-chloroethyl)ethyl] isocyanurates were reacted with NaSCH2CH2OH to obtain the corresponding 1-alkyl 3,5-bis[2-(2-hydroxyethylthio)ethyl] isocyanurates. Treatment of the latter two esters with thionyl chloride gave 1-benzyl and 1-methyl 3,5-bis[2-(2-chloroethylthio)ethyl] isocyanurates, respectively.
COATING COMPOSITION FOR PACKAGING ARTICLES
申请人:SWIMC LLC
公开号:EP3093320B1
公开(公告)日:2021-07-21
JP2011236175A
申请人:——
公开号:JP2011236175A
公开(公告)日:2011-11-24
Flowable Thermoplastic Materials With Halogen-Free Flame Protection
申请人:Engelmann Jochen
公开号:US20080194741A1
公开(公告)日:2008-08-14
Thermoplastic molding compositions, comprising
A) from 10 to 98% by weight of at least one thermoplastic polymer,
B) from 0.01 to 50% by weight of
B1) at least one highly branched or hyperbranched polycarbonate having an OH number of from 1 to 600 mg KOH/g of polycarbonate (to DIN 53240, Part 2), or
B2) at least one highly branched or hyperbranched polyester of A
x
B
y
type, where x is at least 1.1 and y is at least 2.1, or a mixture of these,
C) from 1 to 40% by weight of a halogen-free flame retardant, selected from the group of the phosphorus-containing or nitrogen-containing compounds, or of the P—N condensates, or a mixture of these,
D) from 0 to 60% by weight of other additives,
where the total of the percentages by weight of components A) to D) is 100%.