摘要:
Process for repairing manufacturing defects in porous separator webs for accumulators in which a repair material is deposited in targeted manner onto the defect in-line repair as production of the separator web proceeds and the defect is thus sealed, or in which the defect is heated in-line at certain points and thereby welded. Suitable as repair materials are in particular polymers and/or resins dispersible in a dispersion agent, polymerizable materials and hot-melts. Welding preferably takes place using ultrasonics.
摘要:
The invention relates to a thermoplastic polymer-based battery separator, which contains a compound of formula R (OR1)n(COOMx+1/x)m. In said formula, R represents a non-aromatic hydrocarbon group comprising between 10 and 4,200 carbon atoms, which can be interrupted by oxygen atoms, R1 represents H, —(CH2)kCOOMx+1/x or —(CH2)k—SO3Mx+1/x, whereby k stands for 1 or 2, M represents an alkali or earth alkaline metal ion, H+ or NH4+, whereby not all variables of M are defined simultaneously as H+, n stands for 0 or 1, m stands for 0 or a whole number from 10 to 1,400 and x stands for 1 or 2. The ratio of oxygen atoms to carbon atoms in the compound according to the aforementioned formula ranges between 1:1.5 and 1:30 and n and m cannot simultaneously represent zero.
摘要:
An invention is described through which it is possible to reduce in quantity the coloured, mostly dark, and frequently adhesive deposits which form in lead accumulators with separators of filled poly-olefins during formation and operation. The essential feature is that the separators contain as plasticizer a process oil with a CA value of ≦6%, a sulphur content of ≦2000 ppm and a polar part of ≦1%. Preferred process oils to be used as plasticizers are relatively naphthenic and naphthenic oils.
摘要:
The invention relates to a thermoplastic polymer-based battery separator, which contains a compound of formula R (OR1)n(COOMx+1/x)m. In said formula, R represents a non-aromatic hydrocarbon group comprising between 10 and 4,200 carbon atoms, which can be interrupted by oxygen atoms, R1 represents H, —(CH2)kCOOMx+1/x or —(CH2)k—SO3Mx+1/x, whereby k stands for 1 or 2, M represents an alkali or earth alkaline metal ion, H+ or NH4+, whereby not all variables of M are defined simultaneously as H+, n stands for 0 or 1, m stands for 0 or a whole number from 10 to 1,400 and x stands for 1 or 2. The ratio of oxygen atoms to carbon atoms in the compound according to the aforementioned formula ranges between 1:1.5 and 1:30 and n and m cannot simultaneously represent zero.
摘要:
The invention relates to a thermoplastic polymer-based battery separator, which contains a compound of formula R (OR1)n(COOMx+1/x)m. In said formula, R represents a non-aromatic hydrocarbon group comprising between 10 and 4,200 carbon atoms, which can be interrupted by oxygen atoms, R1 represents H, —(CH2)kCOOMx+1/x or —(CH2)k—SO3Mx+1/x, whereby k stands for 1 or 2, M represents an alkali or earth alkaline metal ion, H+ or NH4+, whereby not all variables of M are defined simultaneously as H+, n stands for 0 or 1, m stands for 0 or a whole number from 10 to 1,400 and x stands for 1 or 2. The ratio of oxygen atoms to carbon atoms in the compound according to the aforementioned formula ranges between 1:1.5 and 1:30 and n and m cannot simultaneously represent zero.