楚的Beitrage化学organometallischer metallacyclischer nebengruppenmetallverbindungen:X. SYNTHESE,NMR-spektroskopische UND DTA-untersuchungen DER ersten homoleptischen metallacyclischen“处于komplexe” DES typs [律X ] 2 HR)2(L = ein- bzw.zweizähliger配体;Rħ ,CH 3)-molekülstrukturvon [Li(TMEDA)] 2 H 2)2
Unsaturated polyaminopolymers, derivatives thereof, paper containing the polyaminopolymers processes for making all three
申请人:THE DOW CHEMICAL COMPANY
公开号:EP0471594A2
公开(公告)日:1992-02-19
Polyaminopolymers containing functionality are prepared by (a) contacting a polyfunctional amine with an unsaturated alkylating agent to form an amine/unsaturated alkylating agent adduct; (b) contacting the adduct with a polyfunctional compound to form a polyaminopolymer; (c) contacting the polyaminopolymer with a halogen, hypohalous acid or precursor thereof to form a polyaminopolymer having halohydrin or dihalo functionality; and (d) raising the pH of the polyaminopolymer having halohydrin or vicinal dihalo functionality to cause an increase in molecular weight. Optionally, the polyaminopolymer of step (b) or (c) is contacted with a crosslinking agent therefor having at least two functional groups reactive with amine groups to form a crosslinked polyaminopolymer. When such a crosslinked polyaminopolymer is formed, step (d) can be omitted. The polyaminopolymer of the invention are useful for preparing paper having improved wet strength.
Aspects described herein generally relate to methods of making a phosphono paraffin comprising forming a reaction mixture by mixing a haloparaffin, a phosphite, and sodium iodide. Methods comprise heating the reaction mixture to form the phosphono paraffin. Aspects described herein further relate to a phosphono paraffin represented by formula (I):
(I): wherein each instance of R3 is independently -H or
wherein each instance of R1 and R2 is independently linear or branched C1-20 alkyl, C3-20 cycloalkyl, or aryl; the number of instances where R3 is
of formula (I) is between about 2 and about 8; and n is an integer between 4 and 22.