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US3843558A Expired / Lapsed US ⏱️ 0.0 years remaining

Foam control substance

Assignee: Dow Silicones UK Ltd
•
Filing: 1972-06-16
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Granted: 1974-10-22
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Expires: 1992-06-16
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Abstract

Abstract 1. A FOAM CONTROL SUBSTANCE CONSISTING ESSENTIALLY OF POWDERED OR GRANULAR SODIUM TRIPOLYPHOSPHATE HAVING ON THE SURFACE THEREOF AN ANTIFOAM COMPOSITION CONSISTING ESSENTIALLY OF A MIXTURE OF (1) DIMWTHYLPOLYSILOXANE, (2) A DIORGANOPOLYSILOXANE IN WHICH THE SILICON-BONDED ORGANIC RADICALS ARE METHYL, ETHYL AND 2-PHENYLPROPYL AND SAID ETHYL AND 2-PHENYLPROPYL GROUPS COMPRISE LESS THAN ABOUT 50 PERCENT OF THE TOTAL SILICON-BONDED RADICALS IN THE DIORGANOPOLYSILOXANE, (1) AND (2) BEING PRESENT IN ABOUT EQUAL PROPORTIONS AND BEING IN THE VISOCITY RANGE FROM 50 TO 5000 CS. AT 25* C. AND (3) FROM 1 TO 10 PERCENT BY WEIGHT BASED ON THE WEIGHTS OF (1) AND (2) OF SILICA WHICH HAS A SURFACE AREA OF AT LEAST 50 M.2/G., THE MIXTURE OF (1), (2) AND (3) BEING PRESENT IN AMOUNT OF FROM 10 TO 60 PERCENT BY WEIGHT BASED ON THE WEIGHT OF THE TRIPOLYPHOSPHATE.

Inventors

  • 👤 K Farminer
  • 👤 C Brooke

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-26 14:05
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/16; C11D3/37; C11D3/3703; C11D3/373; B; B01; B01D; B01D19/00; B01D19/02; B01D19/04; B01D19/0404; B01D19/0409; C08; C08K; C08K3/00; C08K3/32; C11D3/0005; C11D3/0026; C11D3/02; C11D3/04; C11D3/06

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 140 words
A FOAM CONTROL SUBSTANCE CONSISTING ESSENTIALLY OF POWDERED OR GRANULAR SODIUM TRIPOLYPHOSPHATE HAVING ON THE SURFACE THEREOF AN ANTIFOAM COMPOSITION CONSISTING ESSENTIALLY OF A MIXTURE OF (1) DIMWTHYLPOLYSILOXANE, (2) A DIORGANOPOLYSILOXANE IN WHICH THE SILICON-BONDED ORGANIC RADICALS ARE METHYL, ETHYL AND 2-PHENYLPROPYL AND SAID ETHYL AND 2-PHENYLPROPYL GROUPS COMPRISE LESS THAN ABOUT 50 PERCENT OF THE TOTAL SILICON-BONDED RADICALS IN THE DIORGANOPOLYSILOXANE, (1) AND (2) BEING PRESENT IN ABOUT EQUAL PROPORTIONS AND BEING IN THE VISOCITY RANGE FROM 50 TO 5000 CS. AT 25* C. AND (3) FROM 1 TO 10 PERCENT BY WEIGHT BASED ON THE WEIGHTS OF (1) AND (2) OF SILICA WHICH HAS A SURFACE AREA OF AT LEAST 50 M.2/G., THE MIXTURE OF (1), (2) AND (3) BEING PRESENT IN AMOUNT OF FROM 10 TO 60 PERCENT BY WEIGHT BASED ON THE WEIGHT OF THE TRIPOLYPHOSPHATE.
Claim 2
Dependent Claim 140 words
A FOAM CONTROL SUBSTANCE CONSISTING ESSENTIALLY OF POWDERED OR GRANULAR SODIUM TRIPOLYPHOSPHATE HAVING ON THE SURFACE THEREOF AN ANTIFOAM COMPOSITION CONSISTING ESSENTIALLY OF A MIXTURE OF (1) DIMWTHYLPOLYSILOXANE, (2) A DIORGANOPOLYSILOXANE IN WHICH THE SILICON-BONDED ORGANIC RADICALS ARE METHYL, ETHYL AND 2-PHENYLPROPYL AND SAID ETHYL AND 2-PHENYLPROPYL GROUPS COMPRISE LESS THAN ABOUT 50 PERCENT OF THE TOTAL SILICON-BONDED RADICALS IN THE DIORGANOPOLYSILOXANE, (1) AND (2) BEING PRESENT IN ABOUT EQUAL PROPORTIONS AND BEING IN THE VISOCITY RANGE FROM 50 TO 5000 CS. AT 25* C. AND (3) FROM 1 TO 10 PERCENT BY WEIGHT BASED ON THE WEIGHTS OF (1) AND (2) OF SILICA WHICH HAS A SURFACE AREA OF AT LEAST 50 M.2/G., THE MIXTURE OF (1), (2) AND (3) BEING PRESENT IN AMOUNT OF FROM 10 TO 60 PERCENT BY WEIGHT BASED ON THE WEIGHT OF THE TRIPOLYPHOSPHATE.

References Cited (Backward Citations)

No citation records indexed.

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1977-10-21 1978-04-22 1978-10-22 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1981-10-21 1982-04-22 1982-10-22 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1985-10-21 1986-04-22 1986-10-22 $7700.00 Window Closed / Lapsed

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