GB1361857A - Scale-inhibiting composition and method - Google Patents
Scale-inhibiting composition and methodInfo
- Publication number
- GB1361857A GB1361857A GB3509571A GB3509571A GB1361857A GB 1361857 A GB1361857 A GB 1361857A GB 3509571 A GB3509571 A GB 3509571A GB 3509571 A GB3509571 A GB 3509571A GB 1361857 A GB1361857 A GB 1361857A
- Authority
- GB
- United Kingdom
- Prior art keywords
- salt
- alkyl
- scale
- water
- composition
- 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
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F5/00—Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
- C02F5/08—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents
- C02F5/10—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances
- C02F5/14—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances containing phosphorus
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
1361857 Scale inhibition CHEMED CORP 27 July 1971 [28 Aug 1970] 35095/71 Heading ClC [Also in Division C7] A composition for inhibition of scale, e.g. in boilers, or sea-water evaporators, comprises (a) about 1 part by weight of where x=1-10, R1=H or C1-C4 alkyl, R2=H, OH, or C1-C4 alkyl, or a water-soluble salt or ester thereof; (b) 1-3 parts of wherein Y and Y<1>=H or C1-C4 alkyl, R3=H, C1-C30 aliphatic, or R4=R3, or where n=1-30, Z=H or -CYY<1>PO3H2, Z<1>=Z, or where m = 1-30, at least one R3 or R4 containing at least one -CYY<1>PO3H2, or a watersoluble salt or ester thereof; and (c) 10-14 parts of a water-soluble polymer selected from polyacrylic acid, polymethacrylic acid, acrylic acidmethacrylic acid copolymers, and watersoluble salts thereof. The M.W. of the polymer may be 1,000 to 1,000,000; its Na, K, or NH4 salt may be used. The salt of the phosphonic acids may be an alkali metal, alkaline earth metal, Zn, Co, Cr, Pb, Sn, Ni, NH4, amine or lower alkanolamine salt; the composition may contain anti-faom, corrosion inhibitor, or biocide; it is used in concentration 0À5-1000 p.p.m.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US6797970A | 1970-08-28 | 1970-08-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1361857A true GB1361857A (en) | 1974-07-30 |
Family
ID=22079667
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3509571A Expired GB1361857A (en) | 1970-08-28 | 1971-07-27 | Scale-inhibiting composition and method |
Country Status (4)
| Country | Link |
|---|---|
| CA (1) | CA952784A (en) |
| DE (1) | DE2140149A1 (en) |
| FR (1) | FR2104550A5 (en) |
| GB (1) | GB1361857A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE435456B (en) * | 1976-01-07 | 1984-10-01 | Calgon Corp | COMPOSITION AND PROCEDURE TO CONTROL THE BUILDING OF THE FLAVOR IN GAS WASHER |
| DE2621606C2 (en) * | 1976-05-14 | 1987-04-16 | Bayer Ag, 5090 Leverkusen | Use of propane-1,3-diphosphonic acids for water conditioning |
| PT71647B (en) * | 1979-08-16 | 1982-01-21 | Calgon Corp | Process for preparing a composition for the control of scale and deposits in gas-liquid separation |
-
1971
- 1971-07-27 GB GB3509571A patent/GB1361857A/en not_active Expired
- 1971-07-27 CA CA119,258A patent/CA952784A/en not_active Expired
- 1971-08-11 DE DE19712140149 patent/DE2140149A1/en active Pending
- 1971-08-19 FR FR7130289A patent/FR2104550A5/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CA952784A (en) | 1974-08-13 |
| FR2104550A5 (en) | 1972-04-14 |
| DE2140149A1 (en) | 1972-03-02 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| 732 | Registration of transactions, instruments or events in the register (sect. 32/1977) | ||
| 732 | Registration of transactions, instruments or events in the register (sect. 32/1977) | ||
| PCNP | Patent ceased through non-payment of renewal fee |