Aminoalkyl-substituted organopolysiloxane thiourea derivatives, a process for the production of these, and the use thereof
Номер патента: CA2022228A1
Опубликовано: 01-02-1991
Автор(ы): Peter Kleinschmit, Peter Panster, Ulrich Deschler
Принадлежит: Individual
Опубликовано: 01-02-1991
Автор(ы): Peter Kleinschmit, Peter Panster, Ulrich Deschler
Принадлежит: Individual
Реферат: Aminoalkyl-substituted organopolysiloxane thioureas are disclosed which consist of the units <IMAGE> (I) whereby R1 stands for a group <IMAGE> (II) R5 is an alkylene grouping, R2 is equal to R1 or H, R3 is equal to R1 or H or a group (CH2)n-N(R6)2 (III) (in which n=1-6, R6=H or an alkyl group with C1-C5) and R4=H or a group of the formula (III), whereby (I) contains at most 2 (III) groups and at most 2 (III) groups and the free valances of the oxygen atoms sitting on the silicon atom are saturated by silicon atoms of other (III) groups, optionally with the insertion of cross-linking agents containing Si, Ti or Zr. The compounds can be random copolycondensates, block copolycondensates or mixed copolycondensates in relation to the optionally present cross-linking agents. In addition, various methods of preparing the compounds are indicated. The compounds can be used especially for the removal of dissolved metals from aqueous or organic phases.
Process for the high pressure production of polyethylene
Номер патента: US4085266A. Автор: Shinichiro Kita,Masayuki Shimizu,Fumihiko Hiki,Setsuo Nakai. Владелец: Sumitomo Chemical Co Ltd. Дата публикации: 1978-04-18.