US 12,275,840 B2
Composite material comprising polybutylene succinate and poly(butylene succinate-co-adipate), and compostable article containing said composite material
Sebastian Meyer, Hemer (DE); and Stephan Albers, Dinklage (DE)
Assigned to SPC Sunflower Plastic Compound GmbH, (DE)
Appl. No. 17/600,936
Filed by SPC Sunflower Plastic Compound GmbH, Garrel (DE)
PCT Filed Mar. 27, 2020, PCT No. PCT/EP2020/058724
§ 371(c)(1), (2) Date Oct. 1, 2021,
PCT Pub. No. WO2020/201094, PCT Pub. Date Oct. 8, 2020.
Claims priority of application No. 102019108905.0 (DE), filed on Apr. 4, 2019.
Prior Publication US 2022/0195180 A1, Jun. 23, 2022
Int. Cl. C08L 67/02 (2006.01); B65D 65/46 (2006.01); B65D 85/804 (2006.01); B29C 45/00 (2006.01); B29C 48/00 (2019.01); B29C 48/08 (2019.01); B29C 51/00 (2006.01); B29K 67/00 (2006.01); B29K 105/00 (2006.01); B29L 31/00 (2006.01)
CPC C08L 67/02 (2013.01) [B65D 65/466 (2013.01); B65D 85/8043 (2013.01); B29C 45/0001 (2013.01); B29C 48/0018 (2019.02); B29C 48/022 (2019.02); B29C 48/08 (2019.02); B29C 51/002 (2013.01); B29K 2067/00 (2013.01); B29K 2105/0085 (2013.01); B29K 2995/006 (2013.01); B29L 2031/7174 (2013.01); C08L 2201/06 (2013.01); C08L 2205/025 (2013.01); C08L 2205/03 (2013.01); C08L 2205/16 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A single-use article, comprising a composite material or compound comprising
C1) a polymer constituent, consisting of
polybutylene succinate and polybutylene succinate-co-adipate, and/or
a polymer mixture or polymer blend, consisting of
polybutylene succinate and
polybutylene succinate-co-adipate,
where the mass ratio of the polybutylene succinate present in the polymer constituent to the polybutylene succinate-co-adipate present in the polymer constituent is in the range from 10:90 to 90:10,
in a total amount in the range from 30% to 75% by mass, based on the total mass of the composite material or compound,
C2) as a first filler constituent at least one of a particulate cellulose-containing material or a fibrous cellulose-containing material,
in a total amount in the range from 3% to 50% by mass, based on the total mass of the composite material or compound, and
C3) as a second filler constituent at least one particulate inorganic material selected from the group consisting of calcium carbonate, clay minerals and silicates,
in a total amount in the range from 12.5% to 25% by mass, based on the total mass of the composite material or compound.