GB935709A - Improvements relating to organopolysiloxanes - Google Patents
Improvements relating to organopolysiloxanesInfo
- Publication number
- GB935709A GB935709A GB39929/60A GB3992960A GB935709A GB 935709 A GB935709 A GB 935709A GB 39929/60 A GB39929/60 A GB 39929/60A GB 3992960 A GB3992960 A GB 3992960A GB 935709 A GB935709 A GB 935709A
- Authority
- GB
- United Kingdom
- Prior art keywords
- organic solvent
- mixture
- weight
- water
- prepared
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
- A61Q19/00—Preparations for care of the skin
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/72—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
- A61K8/84—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds obtained by reactions otherwise than those involving only carbon-carbon unsaturated bonds
- A61K8/89—Polysiloxanes
- A61K8/891—Polysiloxanes saturated, e.g. dimethicone, phenyl trimethicone, C24-C28 methicone or stearyl dimethicone
- A61K8/892—Polysiloxanes saturated, e.g. dimethicone, phenyl trimethicone, C24-C28 methicone or stearyl dimethicone modified by a hydroxy group, e.g. dimethiconol
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/04—Polysiloxanes
- C08G77/06—Preparatory processes
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/08—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers from or to individual record carriers, e.g. punched card, memory card, integrated circuit [IC] card or smart card
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K17/00—Methods or arrangements for effecting co-operative working between equipments covered by two or more of main groups G06K1/00 - G06K15/00, e.g. automatic card files incorporating conveying and reading operations
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Human Computer Interaction (AREA)
- Chemical & Material Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- General Health & Medical Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Medicinal Chemistry (AREA)
- Birds (AREA)
- Epidemiology (AREA)
- Organic Chemistry (AREA)
- Polymers & Plastics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Dermatology (AREA)
- Silicon Polymers (AREA)
Abstract
Liquid organopolysiloxanes comprise silanol terminated copolymers of dimethylsiloxane units and diphenylsiloxane units, 10 to 70 mole per cent of which units are diphenylsiloxane units, the liquid organopolysiloxanes containing from 1 to 7% by weight of hydroxyl groups present mainly as diphenylsilanol chain-terminating groups and having a viscosity at 100 DEG F. of 25 to 100,000 centipoises. The organopolysiloxanes may be prepared by adding a mixture of dimethyldichlorosilane and diphenyldichlorosilane containing 8 to 60 mole per cent diphenyldichlorosilane to a mixture of water and an organic solvent at a temperature of 40 DEG to 90 DEG C. The water-solvent mixture contains 10 parts by weight of water per part of the silane mixture and 0,1 to 5 parts by weight of the organic solvent per part of the silane mixture. The reaction mixture is maintained at 70 DEG to 90 DEG C. for 1/2 to 2 1/2 hrs. after which the reaction mixture is neutralized and the product separated. Solvents specified are acetone, benzene, high-boiling petroleum distillates and, preferably, toluene and tetrahydrofuran. In a typical example (3) copolymers according to the invention are prepared by the above process using toluene as the organic solvent and compared with a copolymer prepared similarly but in the absence of an organic solvent. Only the polymers prepared in the presence of the organic solvent contain from 1 to 7% by weight of hydroxyl groups and are soluble in ethanol. In another example (4) copolymers according to the invention are reacted with aqueous hydrochloric acid or sodium hydroxide solutions to reduce their hydroxyl content. The products may be used in the preparation of paper and of polyurethane foams. Their ethanolic solutions containing a trace of perfume are useful as hand lotions. The products dissolve emulsifying agents and the resultant solutions are readily emulsifiable in water.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US85802359A | 1959-12-08 | 1959-12-08 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB935709A true GB935709A (en) | 1963-09-04 |
Family
ID=25327267
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB39929/60A Expired GB935709A (en) | 1959-12-08 | 1960-11-21 | Improvements relating to organopolysiloxanes |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB935709A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0419076A1 (en) * | 1989-09-01 | 1991-03-27 | Dow Corning Corporation | Process for the synthesis of soluble, condensed hydridosilicon resins containing low levels of silanol |
-
1960
- 1960-11-21 GB GB39929/60A patent/GB935709A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0419076A1 (en) * | 1989-09-01 | 1991-03-27 | Dow Corning Corporation | Process for the synthesis of soluble, condensed hydridosilicon resins containing low levels of silanol |
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