Antibacterial and antifungal mono- and disubstituted amidinoureas and amidinothioureas are obtained by interaction of guanidines and isocyanates or isothiocyanates.
抗菌和抗真菌的单取代和双取代的胍脲和胍硫脲是通过胍胺和异氰酸酯或异硫氰酸酯的相互作用获得的。
NOVEL DIHYDROTRIAZINE DERIVATIVE
申请人:Maeda Shirou
公开号:US20110207926A1
公开(公告)日:2011-08-25
A compound represented by formula (1),
a tautomer thereof, or a salt of the compound or tautomer, which is useful as a bactericide/disinfectant. In the formula, R
1
represents a hydrogen atom, an optionally substituted alkyl group or the like, R
2
represents a hydrogen atom or an optionally substituted alkyl group, or alternatively R
1
and R
2
may combine together with an adjacent nitrogen atom to form an optionally substituted nitrogen-containing heterocyclic group; R
4
represents a hydrogen atom or an optionally substituted alkyl group; R
3
represents an optionally substituted alkyl group; and R
5
and R
6
each represents a hydrogen atom or a methyl group, excluding a compound wherein both R
2
and R
4
represent a hydrogen atom and a compound wherein both R
1
and R
4
represent a hydrogen atom are excluded.
The thermal stabilities of acetal polymers, e.g. oxymethylene/oxyethylene copolymers, are improved by blending with a minor amount of an ionic salt of a low molecular weight copolymer of an alpha-olefin and an alpha, beta ethylenically unsaturated carboxylic acid, e.g. a calcium salt of an ethylene/acrylic acid copolymer. The invention is particularly effective with pigmented acetal polymer composition.
An oxymethylene polymer composition which exhibits a reduced tendency to form mold deposits upon molding, reduced odor and a reduced tendency to discolor under thermal stress. The composition contains a major proportion of an oxymethylene polymer selected from the group consisting of an oxymethylene homopolymers and copolymers represented by the formula
and a minor proportion of a stabilizer which is a compound of the formula
Polyacetal stabilizer formulation with improved color stability
申请人:HOECHST CELANESE CORPORATION
公开号:EP0270279A1
公开(公告)日:1988-06-08
An oxymethylene polymer composition which exhibits a reduced tendency to form mold deposits upon molding, reduced tendency to discolor under thermal stress and low extractable formaldehyde levels is provided by utilizing as a stabilizer a major amount of superpolyamide and a minor amount of a cyclic amidine compound of the formula:
wherein R is phenyl, polynuclear aromatic, heterocyclic, cycloaliphatic and aliphatic containing at least 6 carbon atoms, as well as substituted derivatives of the listed substituents.
本发明提供了一种氧亚甲基聚合物组合物,该组合物在成型时形成霉菌沉积物的趋势减弱,在热应力作用下褪色的趋势减弱,可萃取的甲醛含量低,其稳定剂主要是超聚酰胺和少量式如下的环状脒化合物:
其中 R 是苯基、多核芳香族、杂环族、环脂族和至少含 6 个碳原子的脂肪族,以及上述取代基的取代衍生物。