ES338051A1 - Finely Divided Particles - Google Patents

Finely Divided Particles

Info

Publication number
ES338051A1
ES338051A1 ES338051A ES338051A ES338051A1 ES 338051 A1 ES338051 A1 ES 338051A1 ES 338051 A ES338051 A ES 338051A ES 338051 A ES338051 A ES 338051A ES 338051 A1 ES338051 A1 ES 338051A1
Authority
ES
Spain
Prior art keywords
extracted
rice starch
polypropylene
polymer
additives
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
ES338051A
Other languages
Spanish (es)
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.)
Eastman Kodak Co
Original Assignee
Eastman Kodak 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 Eastman Kodak Co filed Critical Eastman Kodak Co
Publication of ES338051A1 publication Critical patent/ES338051A1/en
Expired legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
    • A24D3/06—Use of materials for tobacco smoke filters
    • A24D3/08—Use of materials for tobacco smoke filters of organic materials as carrier or major constituent
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
    • 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
    • C08J3/00—Processes of treating or compounding macromolecular substances
    • C08J3/02—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques
    • C08J3/09—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques in organic liquids
    • C08J3/11—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques in organic liquids from solid polymers
    • 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
    • C08J3/00—Processes of treating or compounding macromolecular substances
    • C08J3/12—Powdering or granulating
    • C08J3/14—Powdering or granulating by precipitation from solutions

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Dispersion Chemistry (AREA)
  • Analytical Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)
  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)

Abstract

Tobacco-smoke filters comprise polymer particles of average size 1 to 900 microns diameter and surface area of at least 5 square metres per gram, which may be prepared by dissolving the polymer in a solvent at elevated temperature and pressure, cooling the solution at a reduced rate in the region of the precipitation point, optionally in the presence of additives, to a temperature low enough to precipitate the polymer and then releasing the pressure. The additives may be removed by dissolution or decomposition to give particles of open cellular structure. Examples describe the preparation of filter tips for cigarettes by enclosing in wrappers, optionally plugged with cellulose acetate, powders derived from (1) polypropylene, (2, 3 and 5) polypropylene and rice starch (extracted), (7) polypropylene and rice starch, (9) polyethylene and rice starch (extracted) (10) polystyrene and rice starch (extracted), (11) polycarbonate and rice starch (extracted), (12) polyethylene terephthalate and rice starch (extracted), (13) polypropylene and calcium carbonate (extracted) and (14) polypropylene and calcium phosphate (extracted).
ES338051A 1966-03-16 1967-03-15 Finely Divided Particles Expired ES338051A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US53488466A 1966-03-16 1966-03-16

Publications (1)

Publication Number Publication Date
ES338051A1 true ES338051A1 (en) 1968-06-16

Family

ID=24131917

Family Applications (1)

Application Number Title Priority Date Filing Date
ES338051A Expired ES338051A1 (en) 1966-03-16 1967-03-15 Finely Divided Particles

Country Status (10)

Country Link
JP (1) JPS4812998B1 (en)
AT (3) AT286648B (en)
BE (1) BE695430A (en)
CH (1) CH478182A (en)
DE (2) DE1632186A1 (en)
DK (1) DK120871B (en)
ES (1) ES338051A1 (en)
GB (1) GB1172317A (en)
GR (1) GR33448B (en)
NL (1) NL6703963A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103099309A (en) * 2013-02-04 2013-05-15 红云红河烟草(集团)有限责任公司 Application of japonica rice in cigarettes

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3026688C2 (en) * 1980-07-15 1986-02-20 Akzo Gmbh, 5600 Wuppertal Process for the production of powdery, porous polymer particles
DE3026762C2 (en) * 1980-07-15 1985-04-25 Akzo Gmbh, 5600 Wuppertal Process for the production of porous, pulverulent polypropylene and use of the process products
DE3484556D1 (en) * 1983-08-15 1991-06-13 Toyo Boseki PRODUCTION OF STRETCHED POLYMER MATERIALS WITH HIGH STRENGTH AND HIGH MODULE.
DE3404271A1 (en) * 1984-02-03 1985-08-08 Mannesmann AG, 4000 Düsseldorf FINE GRAIN BLEND
JPS6129881A (en) * 1984-07-20 1986-02-10 有馬　忠見 Sign board construction
US4853462A (en) * 1988-03-21 1989-08-01 Arco Chemical Technology, Inc. Preparation of discrete particles of polyalkylene carbonate

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103099309A (en) * 2013-02-04 2013-05-15 红云红河烟草(集团)有限责任公司 Application of japonica rice in cigarettes
CN103099309B (en) * 2013-02-04 2014-10-22 红云红河烟草(集团)有限责任公司 Application of japonica rice in cigarettes

Also Published As

Publication number Publication date
DK120871B (en) 1971-07-26
DE1694038A1 (en) 1971-07-15
NL6703963A (en) 1967-09-18
AT286648B (en) 1970-12-10
GB1172317A (en) 1969-11-26
AT283978B (en) 1970-08-25
JPS4812998B1 (en) 1973-04-24
AT295165B (en) 1971-11-15
DE1632186A1 (en) 1970-11-05
BE695430A (en) 1967-08-14
CH478182A (en) 1969-09-15
GR33448B (en) 1967-12-05

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