US 11,655,309 B2
Polymer-based resin compositions derived from cellulose and articles made using these compositions
Wenlai Feng, Johnson City, TN (US); Haining An, Kingsport, TN (US); Michael Eugene Donelson, Kingsport, TN (US); Thomas Joseph Pecorini, Kingsport, TN (US); Robert Ellis McCrary, Kingsport, TN (US); Douglas Weldon Carico, Kingsport, TN (US); and Spencer Allen Gilliam, Gate City, VA (US)
Assigned to Eastman Chemical Company, Kingsport, TN (US)
Appl. No. 16/348,586
Filed by Eastman Chemical Company, Kingsport, TN (US)
PCT Filed Nov. 9, 2017, PCT No. PCT/US2017/060803
§ 371(c)(1), (2) Date May 9, 2019,
PCT Pub. No. WO2018/089599, PCT Pub. Date May 17, 2018.
Claims priority of provisional application 62/513,467, filed on Jun. 1, 2017.
Claims priority of provisional application 62/505,268, filed on May 12, 2017.
Claims priority of provisional application 62/505,261, filed on May 12, 2017.
Claims priority of provisional application 62/420,989, filed on Nov. 11, 2016.
Prior Publication US 2019/0345313 A1, Nov. 14, 2019
Int. Cl. C08B 3/16 (2006.01); C08K 5/1515 (2006.01); C08K 5/526 (2006.01); C08L 1/10 (2006.01); C08L 1/14 (2006.01); C08L 1/12 (2006.01); C08L 1/02 (2006.01); B29C 45/00 (2006.01); C08B 3/06 (2006.01); C08K 5/00 (2006.01); B29K 1/00 (2006.01); B29K 105/00 (2006.01); B29C 45/78 (2006.01)
CPC C08B 3/16 (2013.01) [B29C 45/0001 (2013.01); C08B 3/06 (2013.01); C08K 5/1515 (2013.01); C08K 5/526 (2013.01); C08L 1/02 (2013.01); C08L 1/10 (2013.01); C08L 1/12 (2013.01); C08L 1/14 (2013.01); B29C 45/78 (2013.01); B29C 2945/76498 (2013.01); B29C 2945/76531 (2013.01); B29C 2945/76561 (2013.01); B29C 2945/76668 (2013.01); B29K 2001/12 (2013.01); B29K 2105/0038 (2013.01); B29K 2995/0017 (2013.01); B29K 2995/0056 (2013.01); C08K 5/0016 (2013.01); C08L 2205/02 (2013.01); C08L 2205/06 (2013.01)] 12 Claims
 
1. A shaped article comprising a polymer-based resin derived from cellulose, wherein the polymer-based resin has a heat deflection temperature (HDT) of at least 95° C., a bio-derived content of at least 20 wt %, a notched Izod impact strength of greater than 100 J/m as measured according to ASTM D256 using a 3.2 mm thick bar that has been subjected to 50% relative humidity for 48 hours at 23° C., and has at least one of the following properties chosen from: flexural modulus of greater than 1900 MPa as measured according to ASTM D790 using a 3.2 mm thick bar that has been subjected to 50% relative humidity for 48 hours at 23° C.; a spiral flow length of at least 3.0 cm, when the polymer-based resin is molded with a spiral flow mold with the conditions of a barrel temperature of 238° C., a melt temperature of 246° C., a molding pressure of 13.8 MPa, a mold thickness of 0.8 mm, and a mold width of 12.7 mm; a flex creep deflection of less than 12 mm, measured using a molded bar having dimensions of 5″ length, 0.5″ width, and 0.125″ thickness positioned horizontally on a fixture with a 4″ span, inside a dry oven for 68 hours at 90° C. with a nominal 500 psi stress on the center of the span; a transmission of at least 70 measured according to ASTM D1003 using a 3.2 mm plaque after injection molding at a barrel set point of 249° C. and a residence time of 5 min; a ΔE value of less than 25, using a 3.2 mm plaque after injection molding with a barrel temperature of 249° C. and a residence time of 5 min; or an L* color of at least 85, measured according to ASTM E1348 using a 3.2 mm plaque after injection molding with a barrel temperature of 249° C. and a residence time of 5 min, wherein the polymer-based resin contains less than 4 wt % of a plasticizer, wherein the polymer-based resin comprises a cellulose ester which has an absolute weight average molecular weight in the range of from about 40,000 Da to about 200,000 Da measured according to ASTM D5296 using tetrahydrofuran as a solvent and a flow rate of 1 mL/min and a core-shell impact modifier in the range of 1 to 15 wt % based on the total weight of the polymer-based resin, and wherein the cellulose ester is chosen from cellulose acetate (CA), cellulose acetate propionate (CAP), cellulose acetate butyrate (CAB) or cellulose acetate isobutyrate (CAIB).