JPS55161850A - Orgamopolysiloxane composition - Google Patents
Orgamopolysiloxane compositionInfo
- Publication number
- JPS55161850A JPS55161850A JP6968879A JP6968879A JPS55161850A JP S55161850 A JPS55161850 A JP S55161850A JP 6968879 A JP6968879 A JP 6968879A JP 6968879 A JP6968879 A JP 6968879A JP S55161850 A JPS55161850 A JP S55161850A
- Authority
- JP
- Japan
- Prior art keywords
- compsn
- copolymer
- formula
- diorganopolysiloxane
- hydroxyalkylene
- 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.)
- Pending
Links
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
Abstract
PURPOSE: To provide titled compsn. having excellent anti-foaming durability and foam-breaking properties and useful as an anti-foaming agent, by a method wherein a diorganopolysiloxane and a siloxane-hydroxyalkylene copolymer having a specified HLB value are blended with a silica filler.
CONSTITUTION: 100pts.wt. of a compsn. consisting of (i) 4W98wt% of diorganopolysiloxane and (ii) 96W2wt% of a siloxane-hydroxyalkylene copolymer of formula I [wherein G is gp. of formula II (wherein A is end gp.; R1 is 3W10C bivalent hydrocarbon gp.; R2 is 1W10C alkylene gp.; k, l are an integer of not less than 1; m, n are 0, 1); R is monovalent hydrocarbon gp.; a, b are a positive number determined by formula 1.9≤a+b≤2.2] having an HLB value of not less than 8.3 and a ratio of M2/M1 0.3W0.8 (wherein M1 is a MW of copolymer; M2 is a MW of oxyalkylene gp. of G), are uniformly mixed with (iii) 1W20pts.wt. of a silica filler to obtain the desired compsn.
EFFECT: The compsn. exhibits excellent anti-foaming durability and foam-breaking properties in the low-temperature region and also in the high-temperature region.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6968879A JPS55161850A (en) | 1979-06-04 | 1979-06-04 | Orgamopolysiloxane composition |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6968879A JPS55161850A (en) | 1979-06-04 | 1979-06-04 | Orgamopolysiloxane composition |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55161850A true JPS55161850A (en) | 1980-12-16 |
Family
ID=13410051
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6968879A Pending JPS55161850A (en) | 1979-06-04 | 1979-06-04 | Orgamopolysiloxane composition |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55161850A (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5334854A (en) * | 1976-09-14 | 1978-03-31 | Toray Silicone Co Ltd | Self-emulsifiable silicone composition |
-
1979
- 1979-06-04 JP JP6968879A patent/JPS55161850A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5334854A (en) * | 1976-09-14 | 1978-03-31 | Toray Silicone Co Ltd | Self-emulsifiable silicone composition |
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