WO2015081076A1 - Article pour fumeurs avec substances fumables contenant des polymeres - Google Patents

Article pour fumeurs avec substances fumables contenant des polymeres Download PDF

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Publication number
WO2015081076A1
WO2015081076A1 PCT/US2014/067336 US2014067336W WO2015081076A1 WO 2015081076 A1 WO2015081076 A1 WO 2015081076A1 US 2014067336 W US2014067336 W US 2014067336W WO 2015081076 A1 WO2015081076 A1 WO 2015081076A1
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WO
WIPO (PCT)
Prior art keywords
polyalkylene carbonates
tobacco
smokable material
aliphatic polyalkylene
smoking article
Prior art date
Application number
PCT/US2014/067336
Other languages
English (en)
Inventor
Joseph SANT'ANGELO
Original Assignee
Chemical Commercial Development, Llc
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 Chemical Commercial Development, Llc filed Critical Chemical Commercial Development, Llc
Priority to US14/653,000 priority Critical patent/US20150320109A1/en
Priority to AU2014354908A priority patent/AU2014354908A1/en
Publication of WO2015081076A1 publication Critical patent/WO2015081076A1/fr

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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
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
    • A24B15/00—Chemical features or treatment of tobacco; Tobacco substitutes, e.g. in liquid form
    • A24B15/10—Chemical features of tobacco products or tobacco substitutes
    • A24B15/16—Chemical features of tobacco products or tobacco substitutes of tobacco substitutes
    • 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
    • A24D1/00—Cigars; Cigarettes
    • A24D1/02—Cigars; Cigarettes with special covers

Definitions

  • TITLE SMOKING ARTICLE WITH POLYMER-CONTAINING
  • This present invention relates generally to smoking materials, particularly the clean burning polymers in conjunction with, and as a substitute for, tobacco.
  • Cigarettes contain many known carcinogens and contribute to a myriad of health problems.
  • cigarettes contain a plethora of fillers, adhesives, preservatives, binders, and other additives. Acetone, ammonia, arsenic, benzene, cadmium, carbon monoxide, cyanide, lead, nitrosamines, and tar are all found in cigarette smoke.
  • a smoking article comprising one or more aliphatic polyalkylene carbonates. Additional aspects of the invention include: [0012] A smokable material comprising:
  • said one or more aliphatic polyalkylene carbonates aggregately comprise at least 5% of said material
  • At least one of said one or more aliphatic polyalkylene carbonates has a glass transition temperature between 10 degrees Celsius and 200 degrees Celsius.
  • Aspect 2 The smokable material of Aspect 1 further comprising:
  • Aspect 3 The smokable material of any of Aspects 1 and 2 wherein one of said one or more aliphatic polyalkylene carbonates is polyethylene carbonate.
  • Aspect 4 The smokable material of any of Aspects 1 and 2 wherein one of said one or more aliphatic polyalkylene carbonates is polypropylene carbonate.
  • Aspect 5 The smokable material of any of Aspects 1 and 2 wherein one of said one or more aliphatic polyalkylene carbonates is copolymer comprising two or more aliphatic polyalkylene carbonates.
  • a smoking article comprising:
  • a rod having a substantially cylindrical shape and smokable material contained within a wrapping material, the smokable material comprising:
  • said one or more aliphatic polyalkylene carbonates aggregately comprise at least 5% of said smokable material.
  • Aspect 7 The smoking article of Aspect 6 wherein said one or more aliphatic polyalkylene carbonates is a copolymer comprising two or more aliphatic polyalkylene carbonates.
  • Aspect 8 The smoking article of Aspect 6 wherein one of said one or more aliphatic polyalkylene carbonates is polyethylene carbonate.
  • Aspect 9 The smoking article of Aspect 6 wherein one of said one or more aliphatic polyalkylene carbonates is polypropylene carbonate.
  • Aspect 10 The smoking article of any of Aspects 6 through 9 wherein the wrapping material is comprised of one or more aliphatic polyalkylene carbonates.
  • Aspect 1 1 The smoking article of any of Aspects 6 through 10 further comprising a filter system having a filter element comprised of one or more aliphatic polyalkylene carbonates.
  • Aspect 12 The smoking article of any of Aspects 6 through 1 1 wherein one of said one or more aliphatic polyalkylene carbonates has a glass transition temperature between 10 degrees Celsius and 200 degrees Celsius.
  • a method of making a smoking article comprising:
  • smokable material comprising tobacco and one or more aliphatic polyalkylene carbonates having a glass transition between 10 degrees Celsius and 200 degrees Celsius, the one or more aliphatic polyalkylene carbonates aggregately comprising at least 5% of the smokable material;
  • Aspect 14 The method of Aspect 13 wherein step (a) comprises blending smokable material comprising tobacco and an aliphatic polyalkylene carbonate which is a copolymer comprising two or more aliphatic polyalkylene carbonates, the copolymer aggregately comprising at least 5% of the smokable material.
  • Aspect 15 The method of Aspect 13 wherein step (a) comprises blending smokable material comprising tobacco and polyethylene carbonate, the polyethylene carbonate aggregately comprising at least 5% of the smokable material.
  • Aspect 16 The method of Aspect 13 wherein step (a) comprises blending smokable material comprising tobacco and polypropylene carbonate, the polypropylene carbonate aggregately comprising at least 5% of the smokable material.
  • Aspect 17 The method of any of Aspects 13 through 16 wherein step (c) comprises wrapping said rod in a wrapping material comprising one or more aliphatic polyalkylene carbonates.
  • Aspect 18 The method of any of Aspects 13 through 17 further comprising:
  • Aspect 19 The method of Aspect 18 wherein step (d) comprises attaching a filter system having a filter element comprising polyethylene carbonate.
  • Aspect 20 The method of Aspect 18 through wherein step (d) comprises attaching a filter system having a filter element comprising polypropylene carbonate.
  • FIG. 1 is a perspective view of an embodiment of a smoking article according to the present invention in the form of a cigarette;
  • FIG. 2 is an exploded view of an embodiment of a smoking article according to the present invention having the form of a cigarette;
  • FIG. 3 is a longitudinal section view of an embodiment of a smoking article according to the present invention having the form of cigarette.
  • FIG. 4 shows polymerization and combustion reactions involving polyalkylene carbonates.
  • FIG. 5 shows molecular structures of multiple polyalkylene carbonates.
  • directional terms may be used in the specification and claims to describe portions of the present invention (e.g., upper, lower, left, right, etc.). These directional definitions are merely intended to assist in describing and claiming the invention and are not intended to limit the invention in any way.
  • reference numerals that are introduced in the specification in association with a drawing figure may be repeated in one or more subsequent figures without additional description in the specification, in order to provide context for other features.
  • "%" means the percentage of a component in a weight percentage basis unless specifically indicated otherwise.
  • aliphatic means a hydrocarbon moiety that may be straight-chain (i.e., unbranched), branched, or cyclic (including fused, bridging, and spiro-fused polycyclic) and may be completely saturated or may contain one or more units of unsaturation, but which is not aromatic.
  • FIG. 1 shows an embodiment of the smoking article 10 having the form of a cigarette.
  • Cigarettes have two ends: a lit end 22 and a mouth end 24.
  • Cigarettes are comprised of three principal components: a rod 12, wrapping material 14, and a filter system 16. At one end of the rod 12 is the lit end 22, and at the opposite end is the filter system 16.
  • the filter system 16 is comprised of a filter element 18, tipping material 20, and a plug wrap 26 (optional).
  • the filter system 16 has a mouth end 24 and is attached to the rod 12 such that the filter system 16 and rod 12 are axially aligned in an end-to-end relationship, preferably abutting one another.
  • the rod 12 has a surface area comprised of a distal end 12a, a proximal end 12b, and an outer wall 12c.
  • the wrapping material 14 envelopes the outer wall 12c of the rod 12.
  • the filter element 18 has a substantially cylindrical shape, and the diameter thereof may be essentially equal to the diameter of the rod 12.
  • the filter element 18 has a surface area comprised of a distal end 18a, a proximal end 18b, and an outer wall 18c.
  • the tipping material 20 envelopes the outer wall 18c of the filter element 18.
  • FIG. 3 shows a longitudinal section of the smoking article 10.
  • the rod 12 contains smokable material 28 that is contained by the wrapping material 14.
  • Smoke passes from the lit end 22 through the smokable material, into the filter element 18 and out of the distal end 18a.
  • the plug wrap 26 envelopes the outer wall 18c of the filter element 18 and prevents the passage of air therethrough.
  • This outer surface 26a of the plug wrap 26 is enveloped by the tipping material 20.
  • a perforation 30 extends through the plug wrap 26 and tipping material 20 allows the passage of air therethrough to dilute the smoke that the smoker inhales through the distal end 18a of the filter element 18.
  • the smokable material 28 is typically comprised of three components: (1) a burning material, (2) additives, and (3) a binder material.
  • the principal burning material in conventional cigarettes is tobacco.
  • Tobacco can be in the form of tobacco leaves (whole or shredded), or reconstituted tobacco sheets (whole or shredded).
  • Additives include nicotine, flavorants and smoke producing compounds. Nicotine is present in tobacco leaves and provides a stimulant effect to users of tobacco products. Nicotine is readily absorbed into the bloodstream when a tobacco product is chewed, inhaled, or smoked. In addition to the nicotine present in tobacco, more nicotine can be added to the smoking material to achieve the appropriate nicotine content depending on the particular market in which the smoking article is sold.
  • the smokable material 28 comprises at polymeric material consisting of one or more polyalkylene carbonates (PACs).
  • PACs have physical properties which are useful as tobacco substitutes.
  • Polyalkylene carbonates are comprised of CO 2 and epoxides and are clean burning.
  • FIG. 4 shows the basic polymerization reaction 410. Polyethylene carbonate is 50% CO 2 by weight.
  • PAC polymers offer utility as a burning material.
  • the products of the combustion reaction 420 are principally carbon dioxide (CO 2 ) and water (H 2 O) and, as used in cigarettes, PACs can lower the amount of carcinogens produced during the smoking process.
  • PACs are a family of polymers formed by catalytic polymerization reaction of carbon dioxide and epoxides in the presence of a solid catalyst containing zinc.
  • a common catalyst used to carry out this reaction is zinc glutarate (ZnGa).
  • the following nonexclusive list of epoxides includes several PAC precursors: ethylene oxide, propylene oxide, butylene oxide, cyclohexene oxide, 1-hexene oxide, and 1-butene oxide.
  • FIG. 5 shows the basic structures of a nonexclusive list of aliphatic PACs includes: polyethylene carbonate 510, polypropylene carbonate 520, polybutylene carbonate 530, and polycyclohexene carbonate (not shown).
  • multiple aliphatic polyalkylene carbonates may be employed as a copolymer (consisting of at least two structural units/monomers) (e.g., -A-B-A-B-A-B-A- and -A-A-B-A-B-B-A-), as a terpolymer (a copolymer consisting of three distinct monomers) (e.g., -A-B-C-A-B-C-A- and -B-A-B-C-A-B-C-) or block polymers, polymers made up of blocks of different homopolymer subunits (e.g., -A-A-...-A-A-B-B- ...-B-B-).
  • Polyalkylene carbonates can be produced in a wide variety of forms, including but not limited to: fibers, ribbons, pellets, sheets, granules, foams and powder.
  • a variety of fibers may be made using different spinning processes (dry, wet or melt spinning).
  • PAC fibers can be made into sheets and shredded to mimic the size and shape of tobacco used in cigarettes, pipes, cigars, and chewing tobacco.
  • the polymers can be made into pellets or fibers (and mixed with tobacco) or extruded foam to form multiple shapes.
  • Foam extruded PACs can also be produced in the shape of a rod.
  • PACs may also be incorporated in a reconstituted tobacco sheet to mimic the form of tobacco in modern cigarettes.
  • PACs may be used in several different ways in the smoking article 10.
  • PACs may be used as a binder in the smokable material, which dictates that the PAC be a small portion (typically less than 3%) of the smokable material.
  • PACs are used as a significant portion of the burning material— preferably at least 3% of the smokable material, more preferably at least 10% of the smokable material, and most preferably, 20-100% of the smokable material.
  • the desired characteristics of a specific cigarette will determine how much PAC filler can be used.
  • the smokable material could include no tobacco and at least 90% PACs.
  • PACs may also optionally be used as a component of the wrapper and/or filter.
  • flavorants include ammonia, glycerol, licorice, menthol, cocoa, sugars, chlorogenic, cafeic and quinic acids, essential oils, and tobacco extracts.
  • Ammonia is added to cigarettes to increase the pH of the smoke which increases the amount of free base nicotine level in the smoke.
  • Sugars are added to cigarettes because the burning process converts them to acetaldehyde which produces an additive effect when combined with nicotine.
  • PACs are colorless polymers
  • colorants could optionally be added to give the PAC filler a brown color to mimic that of tobacco.
  • suitable colorants include corn syrup based, molasses based or synthetic colorants.
  • the burning of PACs also produces very little odor and smoke.
  • one or more smoke producing compounds, such as calcium carbonate could be included.
  • T g glass transition temperature
  • an amorphous polymer When an amorphous polymer is below its glass transition temperature it is hard and brittle; as a powder the polymer is dry and easy to handle. Above its glass transition temperature, the polymer becomes flowable under physical pressure or exhibits a rubber-like state. Polymers with low glass transition temperatures are relatively soft and flexible at ambient temperature (15°C-25°C), whereas those with high transition temperatures are relatively hard and stiff. Glass transition temperature affects the handling processes when making a cigarette. Different epoxide building blocks may be used to achieve higher or lower glass transition temperatures. Polyethylene carbonate and polypropylene carbonate have glass transition temperatures of 25°C and 40°C respectively.
  • Aromatic polyalkylene carbonates such as polyvinylene carbonate 540, typically have high glass transition temperatures (greater than 200°C), are not elastomeric, and contain less CO 2 by weight, and are to be distinguished from aliphatic PACs (such as polyethylene carbonate and polypropylene carbonate) which have lower glass transition temperatures (25°C and 40°C respectively).
  • Tobacco products are made in production facilities located in warm climates in close proximity to where the tobacco is grown.
  • the processing, blending and rolling of the smokable material occur at a range of temperatures.
  • the glass transitions temperature of different PAC polymers will affect how the blended product is handled in the tobacco processing equipment.
  • the T g will also affect the desired characteristics of a cigarette as a finished product. With this goal in mind, it may be beneficial to use multiple PACs with different T g in each smoking article.
  • Polyethylene carbonate will act as a binder at ambient temperature.
  • PACs be used as binder material by heating the PAC to above its T g , it becomes soft and functions as a binder, and then cooling the material to ambient temperature.
  • the smoking material may or may not require handlability in temperatures above the ambient range (15-25).
  • a lower T g may be desirable because the PAC can provide binding characteristics at ambient temperature.
  • air conditioning and refrigeration systems are employed to maintain flowability when processing the smokable material (PACs, tobacco, additives, and binder) when producing cigarettes, cigars or bulk tobacco blends.
  • PACs offer utility in chewable applications. Below the PACs T g , it will be soft and chewable. PACs may be added to chewing tobacco, smokeless tobacco pouches, and shredded tobacco products.
  • two PACs with different T g could be used in the burning material, with the first PAC having a T g in the range of 25°C, to allow the first PAC to be soft and relatively "sticky" at typically ambient temperatures and the second PAC having a T g in the range of 40°C, which will remain solid throughout the manufacturing process and until burned.
  • Cigarette wrappers are typically made of cellulose. In addition to cellulose they often contain additives to provide white color, improve ash appearance, and help insure uniform burning. However, to reduce carcinogens, cigarette wrapping material can be made using polymer sheets comprised of one or more PACs as replacement for or in addition to cellulose. When used in the cigarette wrapping material, PACs having a T g of at least 40°C is preferable, so that cigarettes do not stick to one another in an ambient environment.
  • PACs exhibit oxygen barrier characteristics and offer utility in packaging applications. Different PACs may be used to produce cigarette wrappers having different oxygen permeability characteristics. This serves multiple functions. First, variable oxygen permeability provides a control for burn characteristics. Cigarettes with porous wrapping material allow air to be drawn in which dilutes the smoke that the smoker inhales. Second, the use of PACs will work to limit oxidation of any of the tobacco inside the smoking article. This will decrease the need for cigarette manufacturers to add preservatives to maintain the freshness and moisture content of the tobacco. Additionally the use of PACs will prevent the smokable material and wrapping material from drying out. This will decrease the propensity of the smoking article to become brittle and prone to breaking in half.
  • a filter system is comprised of a filter element 18, plug wrap 26 (optional) and a tipping material 20. Mouthfeel is important aspect in cigarette filter construction.
  • the filter element 18 preferably includes PACs having a T g in the range of 10°C to 200°C, which is near the normal body temperature of a human (37°C).
  • a plug wrap 26 may be unnecessary. Due to the oxygen barrier characteristics of PACs, a tipping material containing one or more PACs will serve the function of the plug wrap - preventing air from passing through the outer wall of the filter element 18.
  • the mouthfeel will be an important consideration when selecting a wrapping material.
  • PACs as a component of the smokable material
  • PACs biodegradability of PACs is yet another a suitable factor for their use in cigarettes, particularly in the most often discarded component of the cigarette, the filter.
  • cigarette filters are made from non-biodegradable materials such as cellulose acetate.
  • Use of PACs in cigarette filters will allow natural processes, such as water adsorption, weathering, enzymatic degradation and hydrolysis, to facilitate decomposition of the polymers in various environmental conditions.
  • Filter systems comprised of PACs will decrease the amount of cigarette butts that take up space in landfills and will reduce the pollutants produced by the burning of cigarette filters in waste management incinerators every day.
  • one or more PACs can be used to construct the filter element, plug wrap and the tipping material.
  • Polyethylene carbonate has excellent oxygen barrier and elasticity properties, and offers utility on the inside of wrapping material.
  • the raw materials of which the PACs are comprised are relatively inexpensive to make or otherwise obtain.
  • Carbon dioxide is a waste gas produced from a wide variety of industrial processes.
  • Epoxides are simple molecules that have been mass produced for decades. This presents a cost saving opportunity in addition to the health and environmental benefits to be gained from using these polymers in cigarettes.
  • the smoking article is a filtered cigarette having smokable material comprising 90% polypropylene carbonate (as the primary burning material), 8% polyethylene carbonate (as a binder), and no tobacco.
  • the polypropylene carbonate is provided in the form of a fiber prepared in a dry spinning process.
  • the smokable material further includes additives comprising nicotine (between .1 and .25 mg), flavorants comprising ammonia and glycerol, and calcium carbonate as smoke producing compound.
  • the wrapping material consists of polycyclohexene carbonate in sheet form.
  • the filter system is comprised of cellulose acetate and polypropylene carbonate.
  • the smoking article is a filtered cigarette having smokable material comprising 80% polyethylene carbonate (as the primary smokable material and binder material) and shredded, resconstituted tobacco sheets.
  • the polyethylene carbonate is produced in a fiber form using a dry spinning process.
  • the PAC is colored to mimic the brown color of natural tobacco.
  • the cigarette contains additives: nicotine (between .1 and .25 mg), flavorants (ammonia, glycerol and licorice) and a smoke producing compound (calcium carbonate).
  • the wrapping material is comprised of polycyclohexene carbonate and cellulose formed in sheets.
  • the filter system is comprised of cellulose acetate and PACs.
  • the smoking article is a filtered cigarette having smokable material comprising a blend of tobacco and PAC polymer in a three to one ratio.
  • the PAC is a block polymer of polypropylene carbonate and polyethylene carbonate made in the form of extruded pellets.
  • a molasses based colorant is added to the PACs to mimic the color of natural tobacco.
  • Additives include nicotine (between .05 and .20 mg), flavorants (ammonia, glycerol, oil extract from cedar and coriander, and tobacco extract) and a smoke producing compound (calcium carbonate).
  • Polyethylene carbonate is used as a binder.
  • the wrapping material is comprised of polycyclohexene carbonate and cellulose formed in sheets.
  • the filter system includes a high performance filter element comprised of cellulose acetate.
  • the smoking article is a cigarette having a smokable material comprising tobacco and PAC polymer in equal parts.
  • the PAC polymer is a terpolymer of polypropylene carbonate, polyethylene carbonate and polycyclohexene carbonate.
  • the PAC polymer is formed in a reconstituted tobacco sheet which is shredded and colored with a synthetic colorant to mimic the tobacco sheets used in modern cigarettes.
  • Additives include nicotine (between .03 and .15 mg), flavorants (ammonia and glycerol) and a smoke producing compound (calcium carbonate).
  • Polyethylene carbonate is used as a binder.
  • the wrapping material is comprised of a blockpolymer of polypropylene carbonate and polycyclohexene carbonate mixed with cellulose formed in sheets and colored white.
  • the filter system is comprised of cellulose acetate and polycyclohexene carbonate.
  • the smoking article is a cigarette containing smokable material comprising tobacco and PAC polymer in a 9 to 1 ratio.
  • the PAC polymer is a copolymer of polypropylene carbonate and polyethylene carbonate formed in a reconstituted tobacco sheet which is shredded and colored with a synthetic colorant to mimic the tobacco sheets used in modern cigarettes.
  • This example is a cigar having no filter.
  • Additives include nicotine (between .01 and .10 mg), flavorants (ammonia and licorice) and a smoke producing compound (calcium carbonate).
  • Polyethylene carbonate is used as a binder.
  • the wrapping material is comprised of whole tobacco leaves.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)

Abstract

La présente invention concerne des systèmes et procédés pour une substance de substitution pour fumeurs contenant du polymère. Les polyalkylènes carbonates sont des polymères brûlant sans résidus qui possèdent une gamme de températures de transition vitreuse et d'autres propriétés. L'invention concerne des cigarettes (10) contenant une substance fumable, un matériau d'emballage (14) et une matériau de filtre (16) comportant un ou des polyalkylène(s) carbonate(s). Ces systèmes et procédés trouvent leur application industrielle, par exemple, dans l'industrie des produits à base de tabac.
PCT/US2014/067336 2013-11-27 2014-11-25 Article pour fumeurs avec substances fumables contenant des polymeres WO2015081076A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US14/653,000 US20150320109A1 (en) 2013-11-27 2014-11-25 Smoking article with polymer-containing smokable materials
AU2014354908A AU2014354908A1 (en) 2013-11-27 2014-11-25 Smoking article with polymer-containing smokable materials

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201361963222P 2013-11-27 2013-11-27
US61/963,222 2013-11-27

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Publication Number Publication Date
WO2015081076A1 true WO2015081076A1 (fr) 2015-06-04

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Publication number Priority date Publication date Assignee Title
KR102490768B1 (ko) * 2016-08-17 2023-01-20 필립모리스 프로덕츠 에스.에이. 신규한 담배 기재를 구비한 에어로졸 발생 물품
USD950841S1 (en) 2020-12-14 2022-05-03 ARK Industries Smoking cessation device

Citations (4)

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US3831609A (en) * 1972-02-14 1974-08-27 Sutton Res Corp Smokable substitute material and smoking products thereof
US3861401A (en) * 1973-03-08 1975-01-21 Theodore S Briskin Smokable tobacco substitute material and method
US3861402A (en) * 1973-10-23 1975-01-21 Sutton Res Corp Smokable material and method for preparation of same
US20120156410A1 (en) * 2009-07-05 2012-06-21 Novomer, Inc. Structurally precise poly(propylene carbonate) compositions

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US5050622A (en) * 1991-08-22 1991-09-24 R. J. Reynolds Tobacco Company Cigarette
KR101418485B1 (ko) * 2011-01-27 2014-07-10 에스케이이노베이션 주식회사 이산화탄소를 원료로 하는 고분자 수지 조성물 및 이로부터 제조된 친환경 장식재

Patent Citations (4)

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Publication number Priority date Publication date Assignee Title
US3831609A (en) * 1972-02-14 1974-08-27 Sutton Res Corp Smokable substitute material and smoking products thereof
US3861401A (en) * 1973-03-08 1975-01-21 Theodore S Briskin Smokable tobacco substitute material and method
US3861402A (en) * 1973-10-23 1975-01-21 Sutton Res Corp Smokable material and method for preparation of same
US20120156410A1 (en) * 2009-07-05 2012-06-21 Novomer, Inc. Structurally precise poly(propylene carbonate) compositions

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AU2014354908A1 (en) 2016-06-16
US20150320109A1 (en) 2015-11-12

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