US 12,138,827 B2
Converting non-biodegradable polymeric granules and components to biodegradable by surface coating
Ashok Chaturvedi, New Delhi (IN)
Appl. No. 17/436,878
Filed by Ashok Chaturvedi, New Delhi (IN)
PCT Filed Mar. 7, 2020, PCT No. PCT/IN2020/050214
§ 371(c)(1), (2) Date Sep. 20, 2021,
PCT Pub. No. WO2020/183490, PCT Pub. Date Sep. 17, 2020.
Claims priority of application No. 201911009252 (IN), filed on Mar. 9, 2019.
Prior Publication US 2022/0161458 A1, May 26, 2022
Int. Cl. C08J 3/22 (2006.01); B29B 9/06 (2006.01); B29B 9/12 (2006.01); B29B 9/16 (2006.01); C08J 3/20 (2006.01)
CPC B29B 9/12 (2013.01) [B29B 9/065 (2013.01); B29B 9/16 (2013.01); B29B 2009/163 (2013.01); B29B 2009/168 (2013.01)] 3 Claims
 
1. A method of converting non-biodegradable polymeric raw material granules into biodegradable polymeric granules, the method comprising:
mixing an enzyme-based composition in recirculating cooling water of an underwater pelletizer;
pelletizing non-biodegradable raw material using the underwater pelletizer such that non-biodegradable polymeric raw material granules produced by the underwater pelletizer are wetted with the recirculating cooling water containing the enzyme- based composition; and
drying the wetted non-biodegradable polymeric raw material granules to produce an enzyme-based coating on the non-biodegradable polymeric raw material granules, thereby converting the non-biodegradable polymeric raw material granules into biodegradable polymeric granules.