公开(公告)号：US3150115A

公开(公告)日：1964-09-22

申请号：US4485560

申请日：1960-07-25

Applicant: DOW CORNING

Inventor： CLARK HAROLD A ,  LEITHEISER ROBERT H

IPC: C08G77/00

CPC classification number: C08G77/00

公开(公告)号：US3398175A

公开(公告)日：1968-08-20

申请号：US43116065

申请日：1965-02-08

Applicant: DOW CORNING

Inventor： LEITHEISER ROBERT H

IPC: C08G77/52

CPC classification number: C08G77/52

公开(公告)号：US3146218A

公开(公告)日：1964-08-25

申请号：US4484560

申请日：1960-07-25

Applicant: DOW CORNING

Inventor： CLARK HAROLD A ,  LEITHEISER ROBERT H

IPC: C08G77/00

CPC classification number: C08G77/00 ,  Y10T428/31612

公开(公告)号：US3122579A

公开(公告)日：1964-02-25

申请号：US6282560

申请日：1960-10-17

Applicant: DOW CORNING

Inventor： LEITHEISER ROBERT H

IPC: C07F7/08 ,  C08G77/06

CPC classification number: C08G77/06 ,  C07F7/0836 ,  C07F7/0859

Abstract: 941,502. Trisiloxanes. DOW CORNING CORPORATION. Sept. 29, 1961 [Oct. 17, 1960], No. 35221/61. Heading C3S. The invention comprises trisiloxanes of the formula where X is halogen, acyloxy, hydrocarbonoxy or hydroxy and R is a monovalent hydrocarbon or halohydrocarbon radical, at least one R being different from the other R groups. When X is halogen or acyloxy, the compounds may be prepared by reacting 2 mols of R 2 SiX z , which may be the same or different, with one mol of R 2 Si(OH) 2 , preferably in the presence of an acid acceptor. When X is alkoxy, they are prepared by reacting ClSi(R 2 )O-alkyl with R 2 Si(OH)2. The siloxane diols are prepared by hydrolysing the chloro or acetoxy trisiloxanes in water containing an acid acceptor, e.g. sodium bicarbonate, at room temperatures. The radicals R include alkyl, alkenyl, alkynyl, cycloalkyl, cycloalkenyl, aryl, alkaryl, aralkyl, and chloro-, fluoro- and bromo-derivatives thereof. Typical examples describe the preparation of Specification 941,501 is referred to.