2 results about "Lone pair" patented technology

Methods for preparing substantially non-antigenic polymers having lone electron pair-containing moieties in high purity are disclosed. The polymers are useful as intermediates for synthesis of amine-based polymers and in the formation of activated polymers for conjugation with nucleophiles. Conjugates and methods of preparation and treatment with the conjugates are also disclosed. The resultant polymer-amines are of sufficient purity so that expensive and time consuming purification steps required for pharmaceutical grade polymers are avoided.

The invention discloses a secondary battery anode material. The material comprises a framework, chelating / adsorption groups and active substances. The framework does not participate in electrochemical reaction and just provides carriers for the chelating / adsorption groups; the chelating / adsorption groups outer layer electrons of contained atoms such as N, S, P and O which have lone pair electrons and can form chelating or chemisoptive bonds (represented by iminodiacetic acid chelating groups in the drawing) along with divalent or multivalent metals; the active substances are divalent or multivalent metal ions which can be reduced into a lower-valence state. During charging, the metal ions used as the active substances are reduced into a lower-valence state or metal elementary substance state, and during discharging, metal ions can be reversibly produced and can form ionic bonds or coordination bonds along with the chelating / adsorption groups. The anode material can be matched with many cathode materials to form a battery. The battery anode disclosed by the invention is novel in principle and structure, and is very expected to be applied to electric automobiles and large-size energy storage projects due to low cost and high reliability.