GB442964A - Improvements in or relating to the concentration of latex - Google Patents

Improvements in or relating to the concentration of latex

Info

Publication number
GB442964A
GB442964A GB36965/34A GB3696534A GB442964A GB 442964 A GB442964 A GB 442964A GB 36965/34 A GB36965/34 A GB 36965/34A GB 3696534 A GB3696534 A GB 3696534A GB 442964 A GB442964 A GB 442964A
Authority
GB
United Kingdom
Prior art keywords
latex
per cent
creaming
serum
rate
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
Application number
GB36965/34A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Uniroyal Inc
Original Assignee
United States Rubber Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by United States Rubber Co filed Critical United States Rubber Co
Publication of GB442964A publication Critical patent/GB442964A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08C—TREATMENT OR CHEMICAL MODIFICATION OF RUBBERS
    • C08C1/00—Treatment of rubber latex
    • C08C1/02—Chemical or physical treatment of rubber latex before or during concentration
    • C08C1/075—Concentrating
    • C08C1/08—Concentrating with the aid of creaming agents

Landscapes

  • Chemical & Material Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Confectionery (AREA)
  • Dairy Products (AREA)

Abstract

In the creaming of latex, the operation is interrupted when the rate of creaming begins to decrease rapidly, the serum is separated and replaced by water or latex, creaming agent is added to replace that removed with the serum, and the operation is continued. The "break" in the rate occurs: (a) When the rubber-rich portion contains 45-55 per cent total solids, (b) in one-fifth to one quarter of the normal time for creaming to 60 per cent total solids, (c) when the volume of serum is 30-45 per cent of the latex, (d) when the rate of serum separation falls to a predetermined amount. This last depends on the nature of the latex. With fresh, untreated latex, this is about 0,5-1,0 per cent per hour; with old latex or fresh latex to which soap has been added, 2-3 per cent; latex which has been agitated as described in Specification 417,162, or subjected to an electrical potential as described in Specification 344,647, 4-6 per cent of the total latex. This operation may be repeated as many times as desired, the final operation only being allowed to continue until a 60 per cent cream is obtained. Specification 413,185 also is referred to.
GB36965/34A 1934-10-11 1934-12-24 Improvements in or relating to the concentration of latex Expired GB442964A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US442964XA 1934-10-11 1934-10-11

Publications (1)

Publication Number Publication Date
GB442964A true GB442964A (en) 1936-02-19

Family

ID=21931575

Family Applications (1)

Application Number Title Priority Date Filing Date
GB36965/34A Expired GB442964A (en) 1934-10-11 1934-12-24 Improvements in or relating to the concentration of latex

Country Status (1)

Country Link
GB (1) GB442964A (en)

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