IP Library › Granted Patent US 12,649,805
Granted Patent B2
US 12,649,805 · App. 17/755,351 · Granted Jun 9, 2026

Recycle content poly(vinyl acetal)

Inventors: David Eugene Slivensky (Tatum, TX); Daryl Bitting (Longview, TX); Kenny Randolph Parker (Afton, TN); Michael Gary Polasek (Longview, TX); William Lewis Trapp (Kingsport, TN); Xianchun Wu (Longview, TX)
Assignee: Eastman Chemical Company
C08F116/38C08F16/38C08L29/14C10G1/02C08L2207/02C10G2300/1003
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Quick Facts
Patent No.
US 12,649,805
App. No.
17/755,351
Granted
Jun 9, 2026
Kind
B2
Abstract

A poly(vinyl acetal) composition, such as a poly(vinyl butyral) composition or resin, can be made containing recycle content by the use of a recycle content aldehyde composition as a feedstock to make the PVA or by application of a recycle allotment, such as an allocation or credit, applied to either the aldehyde composition or to the PVA composition. The recycle content is obtained by cracking a recycle content pyrolysis oil to make a variety of olefins, such as propylene or ethylene.

Claims (4)

1 . A method of preparing a recycle content poly(vinyl acetal) composition “(r-PVA)”, said method comprising reacting polyvinyl alcohol “(PVOH)” with an aldehyde composition comprising pyrolysis recycle content aldehyde “(pr-A)”, wherein at least a portion of the pr-A is derived directly or indirectly from pyrolysis of plastic waste, and wherein said plastic waste comprises one or more plastics selected from high density polyethylene, low density polyethylene, polypropylene, other polyolefins, polystyrene, polyvinyl chloride (PVC), polyvinylidene chloride (PVDC), polyethylene terephthalate, polyamides, poly(methyl methacrylate), polytetrafluoroethylene, or combinations thereof, and wherein the plastic waste comprises not more than 5 weight percent of polyvinyl chloride and/or polyethylene terephthalate.

2 . The method of claim 1 , wherein the poly(vinyl acetal) is poly(vinyl butyral).

3 . The method of claim 1 , wherein the pyrolysis recycle content aldehyde (pr-A) is acetaldehyde, propionaldehyde, n-butyraldehyde, i-butyraldehyde, or a mixture thereof.

4 . The method of claim 1 , wherein a concentration of pyrolysis recycle content aldehyde (pr-A) is at least 90 wt %, based on a weight of the aldehyde.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Aug 24, 2022
From: SLIVENSKY, DAVID EUGENE; BITTING, DARYL; PARKER, KENNY RANDOLPH; POLASEK, MICHAEL GARY; TRAPP, WILLIAM LEWIS; WU, XIANCHUN
To: EASTMAN CHEMICAL COMPANY
Reel/Frame 060880/0347 →
Continuity (2)
Provisional Application 62932025 · Nov 7, 2019
Related Publication 20230002524A1 · Jan 5, 2023
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