# US 2019/0375932 A1 · Soil Biodegradable Blown Film Bag Formulation > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0375932 A1 - Document ID: US20190375932A1 - Status: Published application - Kind: A1 - Application number: 16/436,052 - Filed: 2019-06-10 - Published: 2019-12-12 - Earliest claimed: 2018-06-11 - Assignees: R & J East, Inc. - Applicants: R & J East, Inc. - Inventors: Kelvin T. Okamoto; Robert Neal Alfred Hawkinson - Web page: https://patentgrep.com/patent/US20190375932A1 ## CPC - C08L 67/02: Polyesters derived from dicarboxylic acids and dihydroxy compounds (C08L67/06 takes precedence) - A01G 13/33: Sheets or films - A47G 19/00: Table service - A47G 19/03: for using only once, e.g. made of paper - A47G 21/18: Drinking straws or the like ({as integral parts of drinking containers A47G19/2266;} for therapeutic purposes A61J15/00 {; adapted to emerge from drinking containers when opened B65D77/283}) - B29C 48/08: flexible, e.g. films - B29C 48/10: flexible, e.g. blown foils - B29C 48/12: Articles with an irregular circumference when viewed in cross-section, e.g. window profiles - B29C 49/0005: {characterised by the material} - B29C 49/04: Extrusion blow-moulding - B65D 65/466: {Bio- or photodegradable packaging materials} - C08J 3/226: {using a polymer as a carrier} - C08J 5/18: Manufacture of films or sheets - F16L 11/12: with arrangements for particular purposes, e.g. specially profiled, with protecting layer, heated, electrically conducting (F16L11/11 takes precedence) - B29C 48/022: {characterised by the choice of material} - B29K 2067/00: Use of polyesters {or derivatives thereof}, as moulding material - B29K 2067/04: {Polyesters derived from hydroxycarboxylic acids} - B29K 2995/006: Bio-degradable, e.g. bioabsorbable, bioresorbable or bioerodible - C08J 2367/02: Polyesters derived from dicarboxylic acids and dihydroxy compounds; (C08J2367/06 takes precedence) - C08L 2201/06: Biodegradable - C08L 2203/14: used for foams - C08L 2203/162: sealable films - C08L 2203/18: used for pipes - C08L 2205/06: having improved processability or containing aids for moulding methods - C08L 2310/00: Masterbatches - C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06) - A01G: HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING (picking of fruits, vegetables, hops or the like A01D46/00; propagating unicellular algae C12N1/12) - A47G: HOUSEHOLD OR TABLE EQUIPMENT (book-ends A47B5/00; knives B26B) - B29C: SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING (making preforms B29B11/00; making laminated products by combining previously unconnected layers which become one product whose layers will remain together B32B37/00 - B32B41/00) - B65D: CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES - C08J: WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H (working, e.g. shaping, of plastics B29) - F16L: PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL - B29K: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR {MOULDS, } REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS ## Abstract A blown film of soil biodegradable aliphatic polyesters produced primarily from diacid and diol monomers. The diacid monomers may be of any type including succinic acid, adipic acid, and hexanedioic acid. The diol monomer may be of any type including ethylene glycol, propanediol, butanediol, and hexanediol. Commercial aliphatic polyesters produced from diacid and diol monomers include polybutylene succinate (PBS), polybutylene adipate succinate (PBAS), and polybutylene adipate (PBA). Comonomers may also be added. Such comonomers include chemicals with a single carboxylic acid, hydroxy, or amine moiety, which act as chain terminators, chemicals with three or more carboxylic acid, epoxy, and/or hydroxy moieties which, act as branching agents. ## Claims ### Claim 1 A polymer composition comprising: a. an aliphatic polyester produced from monomers comprised of diacids and diols; and b. a melt strength enhancer. ### Claim 2 (depends on 1) The polymer composition of claim 1, wherein the melt strength enhancer ranges from about 0.1% to about 1.0% by weight. ### Claim 3 (depends on 1) The polymer composition of claim 1, wherein the melt strength enhancer ranges from about 0.15% to about 0.75% by weight. ### Claim 4 (depends on 1) The polymer composition of claim 1, wherein the melt strength enhancer ranges from about 0.2% to about 0.5% by weight. ### Claim 5 (depends on 1) The polymer composition of claim 1, wherein the diacid is selected from the group consisting of adipic acid and succinic acid and combinations thereof. ### Claim 6 (depends on 1) The polymer composition of claim 1, wherein the aliphatic polyester contains comonomer carboxylic acids selected from the group consisting of terephthalic acid, isophthalic acid, and monocarboxylic acids. ### Claim 7 (depends on 1) The polymer composition of claim 1, wherein the diol is selected from the group consisting of ethylene glycol, propanediol, butanediol, hexanediol. ### Claim 8 (depends on 1) The polymer composition of claim 1, wherein the aliphatic polyester contains comonomers with three of more functionalities. ### Claim 9 (depends on 1) The polymer composition of claim 1 further comprising at least one component selected from the group consisting of plasticizers, flow promoters, polymer processing aids, slip agents, viscosity modifiers, chain extenders, nanoparticles, colorants, anti-microbial agents and combinations thereof. ### Claim 10 (depends on 9) The polymer composition of claim 9, wherein the plasticizer is comprised of polyethylene glycol, sorbitol, glycerine, soybean oil, castor oil, TWEEN 20, TWEEN 40, TWEEN 60, TWEEN 80, TWEEN 85, sorbitan monolaurate, sorbitan monooleate, sorbitan monopalmitate, sorbitan trioleate, sorbitan monostearate, PEG, derivatives of PEG, N,N-ethylene bis-stearamide, N,N-ethylene bis-oleamide, tributyl o-acetyl citrate, Hallstar Hallcoaid PA-6D, and polycarprolactone, polymeric plasticizers such as poly(1,6-hexamethylene adipate), or combinations thereof. ### Claim 11 (depends on 10) The polymer composition of claim 10, wherein the total plasticizer composition is less than 40%. ### Claim 12 (depends on 10) The polymer composition of claim 10, wherein the total plasticizer composition is 5 to 30%. ### Claim 13 (depends on 10) The polymer composition of claim 10, wherein the total plasticizer composition is 10 to 25%. ### Claim 14 (depends on 1) The polymer composition of claim 1, where the polymer composition is soil and water biodegradable. ### Claim 15 (depends on 1) The polymer composition of claim 1, wherein the polymer composition is suitable for foams, films, trash bags, grocery bags, container sealing films, pipes, drinking straws, sheets, bags for mulch, weed block films, or agricultural films. ### Claim 16 (depends on 15) The sheets of claim 15, wherein the sheets can be further processed to produce articles such as cups or plates. ### Claim 17 (depends on 1) The polymer composition of claim 1, wherein the polymer composition is used in a process of foam extrusion and molding, injection molding, thermoforming, film blowing, stretch blow molding, extrusion blow molding, extrusion coatings, profile extrusion, film extrusion, cast film extrusion, or combinations thereof. ### Claim 18 (depends on 1) The polymer composition of claim 1, wherein the polymer composition is produced using twin-screw extrusion, single-screw extrusion, batch mixing, or continuous mixing equipment. ### Claim 19 A biodegradable article comprising a polymer composition comprising an aliphatic polyester and a melt strength enhancer. ### Claim 20 (depends on 19) The polymer composition of claim 19, wherein the melt strength enhancer ranges from about 0.1% to about 1.0% by weight. ### Claim 21 (depends on 19) The polymer composition of claim 19, wherein the melt strength enhancer ranges from about 0.15% to about 0.75% by weight. ### Claim 22 (depends on 19) The polymer composition of claim 19, wherein the melt strength enhancer ranges from about 0.2% to about 0.5% by weight. ### Claim 23 (depends on 19) The polymer composition of claim 19, wherein the diacid is selected from the group consisting of adipic acid and succinic acid and combinations thereof. ### Claim 24 (depends on 19) The polymer composition of claim 19, wherein the aliphatic polyester contains comonomer carboxylic acids selected from the group consisting of terephthalic acid, isophthalic acid, and monocarboxylic acids. ### Claim 25 (depends on 19) The polymer composition of claim 19, wherein the diol is selected from the group consisting of ethylene glycol, propanediol, butanediol, hexanediol. ### Claim 26 (depends on 19) The polymer composition of claim 19, wherein the aliphatic polyester contains comonomers with three of more functionalities. ### Claim 27 (depends on 19) The polymer composition of claim 19 further comprising at least one component selected from the group consisting of plasticizers, flow promoters, polymer processing aids, slip agents, viscosity modifiers, chain extenders, nanoparticles, colorants, anti-microbial agents and combinations thereof. ### Claim 28 (depends on 27) The polymer composition of claim 27, wherein the plasticizer is comprised of polyethylene glycol, sorbitol, glycerine, soybean oil, castor oil, TWEEN 20, TWEEN 40, TWEEN 60, TWEEN 80, TWEEN 85, sorbitan monolaurate, sorbitan monooleate, sorbitan monopalmitate, sorbitan trioleate, sorbitan monostearate, PEG, derivatives of PEG, N,N-ethylene bis-stearamide, N,N-ethylene bis-oleamide, tributyl o-acetyl citrate, Hallstar Hallcoaid PA-6D, and polycarprolactone, polymeric plasticizers such as poly(1,6-hexamethylene adipate), or combinations thereof. ### Claim 29 (depends on 28) The polymer composition of claim 28, wherein the total plasticizer composition is less than 40%. ### Claim 30 (depends on 28) The polymer composition of claim 28, wherein the total plasticizer composition is 5 to 30%. ### Claim 31 (depends on 28) The polymer composition of claim 28 wherein the total plasticizer composition is 10 to 25%. ### Claim 32 (depends on 19) The polymer composition of claim 19, where the polymer composition is soil and water biodegradable. ### Claim 33 (depends on 19) The polymer composition of claim 19, wherein an article selected from the group consisting of polymer foams, films, trash bags, grocery bags, container sealing films, pipes, drinking straws, and sheets, is produced. ### Claim 34 (depends on 33) The polymer composition of claim 33, where in the article is bags for mulch, weed block film or agricultural film. ### Claim 35 (depends on 33) The sheets of claim 33, wherein the sheets can be further processed to produce articles such as cups, plates. ### Claim 36 (depends on 19) The polymer composition of claim 19, wherein the polymer composition is used in a process selected from the group consisting of foam extrusion and molding, injection molding, thermoforming, film blowing, stretch blow molding, extrusion blow molding, extrusion coatings, profile extrusion, film extrusion, cast film extrusion, and combinations thereof. ### Claim 37 (depends on 19) The polymer composition of claim 19, wherein the polymer composition is used in a process selected from the group consisting of foam extrusion and molding, injection molding, thermoforming, film blowing, stretch blow molding, extrusion blow molding, extrusion coatings, profile extrusion, film extrusion, cast film extrusion, and combinations thereof.