GB942744A - Improved structural foams - Google Patents
Improved structural foamsInfo
- Publication number
- GB942744A GB942744A GB3984259A GB3984259A GB942744A GB 942744 A GB942744 A GB 942744A GB 3984259 A GB3984259 A GB 3984259A GB 3984259 A GB3984259 A GB 3984259A GB 942744 A GB942744 A GB 942744A
- Authority
- GB
- United Kingdom
- Prior art keywords
- parts
- methyl
- viscosity
- r3sio
- radicals
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0061—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof characterized by the use of several polymeric components
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2383/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen, or carbon only; Derivatives of such polymers
- C08J2383/04—Polysiloxanes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2483/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen, or carbon only; Derivatives of such polymers
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
A fluid low viscosity siloxane composition which autogenously foams and cures at room temperature comprises a mixture of (1) 60 to 80 parts of a diorganopolysiloxane fluid gum free of terminal hydroxyl, of a viscosity of 1000 to 50000 c.p.s. at 25 DEG C. and of the general formula <FORM:0942744/C3/1> being a monovalent radical at least 85% of which radicals are methyl and n is 1.9 to 2.1, and (2) 40 to 20 parts of a benzene soluble silicone resin composed of R3SiO 1/2 and SiO2 units, R being a monovalent radical at least 90% of which radicals are methyl, the ratio R3SiO 1/2 to SiO2 being 0.7 to 0.96, the composition also including, per 100 parts, 0.017 to 0.17 parts of bound silanic hydrogen which can be rendered available to initiate panning and curing by the addition of 0.1 to 2 parts of a basic catalyst. The bound silanic hydrogen can be furnished by the fluid gum, the silicone resin or a further ingredient e.g. methyl hydrogen siloxane. Fillers can be present e.g. silica, titania, zinc oxide, carbon black, calcium carbonate, iron oxide, barium zirconate, zirconium silicate and quartz. Silicone gums of viscosity above 50,000 may also be added as modifiers, and organic silicates added for toughness. Catalysts used are basic metal carboxylates, examples being given.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US77570458A | 1958-11-24 | 1958-11-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB942744A true GB942744A (en) | 1963-11-27 |
Family
ID=25105226
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3984259A Expired GB942744A (en) | 1958-11-24 | 1959-11-24 | Improved structural foams |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB942744A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0123073A1 (en) * | 1983-03-17 | 1984-10-31 | General Electric Company | Low density silicone foam compositions and method for making |
| US11780983B2 (en) | 2017-02-08 | 2023-10-10 | Elkem Silicones USA Corp. | Secondary battery pack with improved thermal management |
-
1959
- 1959-11-24 GB GB3984259A patent/GB942744A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0123073A1 (en) * | 1983-03-17 | 1984-10-31 | General Electric Company | Low density silicone foam compositions and method for making |
| US11780983B2 (en) | 2017-02-08 | 2023-10-10 | Elkem Silicones USA Corp. | Secondary battery pack with improved thermal management |
| US11905385B2 (en) | 2017-02-08 | 2024-02-20 | Elkem Silicones USA Corp. | Secondary battery pack with improved thermal management |
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