Renewable polyester compositions having a low density
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C08L-067/04
C08L-023/02
C08L-033/00
C08L-067/00
C08L-071/00
C08L-063/00
C08L-023/08
C08L-023/10
출원번호
US-0695109
(2015-04-24)
등록번호
US-9518181
(2016-12-13)
발명자
/ 주소
Scholl, Neil T.
McEneany, Ryan J.
Eby, Thomas A.
Topolkaraev, Vasily A.
출원인 / 주소
Kimberly-Clark Worldwide, Inc.
대리인 / 주소
Dority & Manning, P.A.
인용정보
피인용 횟수 :
3인용 특허 :
90
초록▼
A thermoplastic composition that contains a rigid renewable polyester and has a voided structure and low density is provided. To achieve such a structure, the renewable polyester is blended with a polymeric toughening additive to form a precursor material in which the toughening additive can be disp
A thermoplastic composition that contains a rigid renewable polyester and has a voided structure and low density is provided. To achieve such a structure, the renewable polyester is blended with a polymeric toughening additive to form a precursor material in which the toughening additive can be dispersed as discrete physical domains within a continuous matrix of the renewable polyester. The precursor material is thereafter stretched or drawn at a temperature below the glass transition temperature of the polyester (i.e., “cold drawn”). This creates a network of voids located adjacent to the discrete domains, which as a result of their proximal location, can form a bridge between the boundaries of the voids and act as internal structural “hinges” that help stabilize the network and increase its ability to dissipate energy. The present inventors have also discovered that the voids can be distributed in a substantially homogeneous fashion throughout the composition.
대표청구항▼
1. A thermoplastic composition comprising a rigid polyester constituting 80 wt. % or more of the thermoplastic composition having a glass transition temperature of from 30° C. to 100° C.,a polymeric toughening additive, andan interphase modifier comprising a silicone, silicone-polyether copolymer, a
1. A thermoplastic composition comprising a rigid polyester constituting 80 wt. % or more of the thermoplastic composition having a glass transition temperature of from 30° C. to 100° C.,a polymeric toughening additive, andan interphase modifier comprising a silicone, silicone-polyether copolymer, alkylene glycol, alkane diol, amine oxide, fatty acid ester, or a combination thereof in an amount of from 0.1 wt. % to 15 wt. % based on the weight of the polyester,wherein the thermoplastic composition has a morphology in which a plurality of discrete primary domains and voids are dispersed within a continuous phase, the domains containing the polymeric toughening additive and the continuous phase containing the polyester,wherein the voids contain a combination of micro-voids having a dimension of about 1 micrometer or more and nano-voids having a dimension of less than about 1 micrometer,wherein the thermoplastic composition has a density of about 1.4 grams per cubic centimeter or less, and wherein the ratio of the glass transition temperature of the thermoplastic composition to the glass transition temperature of the polyester is from about 0.7 to about 1.3. 2. The thermoplastic composition of claim 1, wherein the composition has a density of from about 0.5 grams per cubic centimeter to about 0.95 grams per cubic centimeter. 3. The thermoplastic composition of claim 1, wherein the average percent volume of the composition that is occupied by the voids is from about 20% to about 80% per cubic centimeter. 4. The thermoplastic composition of claim 1, wherein the aspect ratio of the micro-voids is from about 0.1 to about 1. 5. The thermoplastic composition of claim 1, wherein the micro-voids have a dimension of about 1.5 micrometers or more. 6. The thermoplastic composition of claim 1, wherein the nano-voids have a dimension of from about 25 nanometers to about 500 nanometers. 7. The thermoplastic composition of claim 1, wherein the polyester includes polylactic acid, polyethylene terephthalate, or a combination thereof. 8. The thermoplastic composition of claim 1, wherein the polyester has a glass transition temperature of from about 50° C. to about 75° C. 9. The thermoplastic composition of claim 1, wherein the ratio of the solubility parameter for the polyester to the solubility parameter of the polymeric toughening additive is from about 0.5 to about 1.5, the ratio of the melt flow rate for the polyester to the melt flow rate of the polymeric toughening additive is from about 0.2 to about 8, and the ratio of the Young's modulus elasticity of the polyester to the Young's modulus of elasticity of the polymeric toughening additive is from about 2 to about 500. 10. The thermoplastic composition of claim 1, wherein the polymeric toughening additive includes a polyolefin. 11. The thermoplastic composition of claim 10, wherein the polyolefin is a propylene homopolymer, propylene/α-olefin copolymer, ethylene/α-olefin copolymer, or a combination thereof. 12. The thermoplastic composition of claim 1, wherein the polymeric toughening additive constitutes from about 1 wt. % to about 30 wt. % based on the weight of the polyester. 13. The thermoplastic composition of claim 1, wherein the interphase modifier has a kinematic viscosity of from about 0.7 to about 200 centistokes, determined at a temperature of 40° C. 14. The thermoplastic composition of claim 1, wherein the interphase modifier is hydrophobic. 15. The thermoplastic composition of claim 1, wherein the interphase modifier is an alkane diol, a fatty acid ester, or a combination thereof. 16. The thermoplastic composition of claim 1, wherein the interphase modifier constitutes from 1 wt. % to 10 wt. % based on the weight of the polyester. 17. The thermoplastic composition of claim 1, wherein the composition comprises a polyepoxide modifier that includes an epoxy-functional (meth)acrylic monomeric component. 18. The thermoplastic composition of claim 1, wherein the polyester constitutes from about 80 wt. % to about 99 wt. % of the thermoplastic composition. 19. The thermoplastic composition of claim 1, wherein the composition exhibits a Poisson coefficient of about 0.1 or less. 20. The thermoplastic composition of claim 1, wherein the composition exhibits an lzod notched impact strength of about 1 J/cm or more, measured at 23° C. according to ASTM D256-10 (Method A). 21. The thermoplastic composition of claim 1, wherein the composition exhibits a tensile elongation at break of about 40% or more, measured at 23° C. according to ASTM D638-10. 22. The thermoplastic composition of claim 1, wherein the composition has an average surface roughness of about 0.2 μm or more.
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허에 인용된 특허 (90)
Guthrie Roger T. (Westfield NJ) Hirshman Justin L. (East Brunswick NJ) Littman Stanley (Sharon NJ) Sukman Edwin L. (Upper Montclair NJ) Ravenscroft Philip H. (Rowayton NJ), Additive-containing fibers.
Engelke Stephan (Wuppertal DEX) Brunnemann Michael (Munster DEX) Rotter Olaf (Everswinkel DEX) Holst Andreas (Neu Wulmstorf DEX), Carboxyl-containing acrylate copolymer, carboxyl-containing resin and epoxy resin.
Brule, Benoit; Fine, Thomas; Flat, Jean-Jacques; Yasuda, Maho, Composite based on polylactic acid and a polyamide, having improved impact strength, and its manufacturing process and use.
Gruber Patrick Richard ; Hall Eric Stanley ; Kolstad Jeffrey John ; Iwen Matthew Lee ; Benson Richard Douglas ; Borchardt Ronald Leo, Continuous process for the manufacture of lactide and lactide polymers.
Obijeski Todd J. (Houston TX) Huff Georgia M. (Lake Jackson TX) Maugans Rexford A. (Lake Jackson TX) McKinney Osborne K. (Lake Jackson TX), Elastic materials and articles therefrom.
Lai Shih-Yaw (Sugar Land TX) Wilson John R. (Richwood TX) Knight George W. (Lake Jackson TX) Stevens James C. (Midland MI) Chum Pak-Wing S. (Lake Jackson TX), Elastic substantially linear olefin polymers.
Lai Shih-Yaw (Sugar Land TX) Wilson John R. (Richwood TX) Knight George W. (Lake Jackson TX) Stevens James C. (Midland MI), Elastic substantialy linear olefin polymers.
McAlpin James J. (Houston TX) Stahl Glenn A. (Humble TX), Fibers and oriented films of polypropylene higher a
상세보기
Davey Christopher R. (Knoxville TN) Erderly Thomas C. (Baytown TX) Mehta Aspy K. (Humble TX) Speed Charles S. (Dayton TX), Fibers of polyolefin polymers.
Hiruma, Takashi; Yamada, Takeyoshi; Muta, Takatoshi, Heat-shrinkable film, molded product and heat-shrinkable label employing the film, and container employing the molded product or having the label fitted thereon.
Reichmann, Mark G.; Aroch, Maya; Jordan, Joy Francine; Kobylivker, Peter Michailovich; McClellan, Jr., Rowland Jaynes; McCormack, Ann Louise; Ramaswami Wallajapet, Palani Raj; Topolkaraev, Vasily A.; Lee, Dennis Y.; Stopper, Steven R., High strength nonwoven web from a biodegradable aliphatic polyester.
Randall Jed Richard ; Ryan Christopher Michael ; Lunt James ; Hartmann Mark Henry, Impact modified melt-stable lactide polymer compositions and processes for manufacture thereof.
Chundury Deenadayalu (North Royalton OH) Bitsch Bernard G. J. (Chantilly FRX), Impact-resistant polymer blends of olefin polymers, polyamides, and terpolymer compatibilizers.
Ohara Hitomi,JPX ; Sawa Seiji,JPX ; Fujii Yasuhiro,JPX ; Ito Masahiro,JPX ; Oota Masaaki,JPX, Method for producing polylactic acid and apparatus used therefor.
Strack David C. (Canton GA) Connor Linda A. (Atlanta GA) Gwaltney Sharon W. (Woodstock GA) McCormack Ann L. (Cumming GA) Shawver Susan E. (Roswell GA) Shultz Jay S. (Roswell GA), Nonwoven fabric made with multicomponent polymeric strands including a blend of polyolefin and ethylene alkyl acrylate c.
Pike Richard D. (Norcross GA) Brown Kurtis L. (Woodstock GA) Gwaltney Sharon W. (Woodstock GA) Herschberger Thomas A. (Appleton WI) Siegel Scott D. (Thomasville NC), Nonwoven multicomponent polymeric fabric and method for making same.
Cheung, Yunwa Wilson; Dobreski, David V.; Turner, Richard; Wheeler, Mark; Handa, Y. Paul, Polymer blends of biodegradable or bio-based and synthetic polymers and foams thereof.
Cheung, Yunwa Wilson; Dobreski, David V.; Turner, Richard; Wheeler, Mark; Handa, Y. Paul, Polymer blends of biodegradable or bio-based and synthetic polymers and foams thereof.
Helms ; Jr. Charles F. ; Ilg Otto M. ; Kent Diane R. ; Hoyt Matthew B. ; Hodan John A., Process for modifying synthetic bicomponent fiber cross-sections.
Sakamoto, Kazuyuki; Suzuki, Tomoaki; Kayama, Hiroshi, Thermal bonding conjugate fiber with excellent bulkiness and softness, and fiber formed article using the same.
Gruber Patrick Richard ; Kolstad Jeffrey John ; Witzke David Roy ; Hartmann Mark Henry ; Brosch Andrea Lee, Viscosity-modified lactide polymer composition and process for manufacture thereof.
Topolkaraev, Vasily A.; Scholl, Neil T.; McEneany, Ryan J.; Eby, Thomas A., Rigid renewable polyester compositions having a high impact strength and tensile elongation.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.