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US4067826A Expired / Lapsed US ⏱️ 0.0 years remaining

Recovery of mixed plastic materials

Assignee: Individual
•
Filing: 1975-08-05
•
Granted: 1978-01-10
•
Expires: 1995-08-05
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Abstract

Abstract A process for recovering mixed plastic material including polyethylene and polyvinyl chloride wherein the material is ground, ballistically sorted and recovered while employing a regenerating master mix including rongalite and chlorinated polyethylene.

Inventors

  • 👤 Guy Emery

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-03 22:17
CPC Classifications
B; B29; B29B; B29B17/00; B29B17/04; B29B17/0412; B29B17/02; B29B2017/0203; B29B2017/0213; B29B2017/0217; B29B2017/0234; B29B2017/0237; B29B2017/0244; B29K; B29K2023/00; B29K2023/04; B29K2023/06; B29K2023/08; B29K2023/083; B29K2023/10; B29K2023/12; B29K2025/00; B29K2027/00; B29K2027/06; B29K2055/00; B29K2055/02; B29K2105/00; B29K2105/06; B29K2105/065; B29K2705/00; B29K2705/08; B29K2705/12; B29K2711/00; B29K2711/12; Y; Y02; Y02W; Y02W30/00; Y02W30/50; Y02W30/52; Y02W30/62; Y10; Y10S; Y10S264/00; Y10S264/911

Claims Analysis

Total Claims: 10
Claim 1
Independent Claim 184 words
In a method for recovering mixed plastic materials from refuse selected from the group consisting at least of polyvinyl chloride and polyethylene, comprising grinding the mixture of plastic materials into small particles, extruding the ground mixture and granulating or molding the extruded material, the improvement comprising ballistically sorting the ground mixture in order to adjust the composition of the mixture and adding to 100 parts of said ground mixture a regenerating master mix comprising: ______________________________________ rongalite 0.1 to 5 parts [-chlorinated polyethylene 0 to 20 parts] polyvinyl chloride stab- ilizer 0.1 to 5 parts lubricant 0 to 5 parts expanding agent 0 to 4 parts shock resistant ABS or MABS 0 to 12 parts ground polyvinyl chloride or polyethylene 0 to 30 parts filler 0 to 800 parts plasticizer or gelling agent 0 to 70 parts ______________________________________ and an amount of chlorinated polyethylene sufficient to bind the polyethylene to the polyvinyl chloride comprising up to 20 parts per 100 parts of the ground mixture, wherein the rongalite prevents the hot glueing effect due to the presence of milk or similar products in said refuse.
Claim 2
Dependent Claim 184 words
In a method for recovering mixed plastic materials from refuse selected from the group consisting at least of polyvinyl chloride and polyethylene, comprising grinding the mixture of plastic materials into small particles, extruding the ground mixture and granulating or molding the extruded material, the improvement comprising ballistically sorting the ground mixture in order to adjust the composition of the mixture and adding to 100 parts of said ground mixture a regenerating master mix comprising: ______________________________________ rongalite 0.1 to 5 parts [-chlorinated polyethylene 0 to 20 parts] polyvinyl chloride stab- ilizer 0.1 to 5 parts lubricant 0 to 5 parts expanding agent 0 to 4 parts shock resistant ABS or MABS 0 to 12 parts ground polyvinyl chloride or polyethylene 0 to 30 parts filler 0 to 800 parts plasticizer or gelling agent 0 to 70 parts ______________________________________ and an amount of chlorinated polyethylene sufficient to bind the polyethylene to the polyvinyl chloride comprising up to 20 parts per 100 parts of the ground mixture, wherein the rongalite prevents the hot glueing effect due to the presence of milk or similar products in said refuse.
Claim 3
Dependent Claim 9 words
The product prepared by the method of claim 1.
Claim 4
Dependent Claim 24 words
The product of claim 2 wherein the plasticizer is selected from the group consisting of polyvinyl acetochloride, dioctyl phthalate, chlorinated paraffins, and paraffin oil.
Claim 5
Dependent Claim 20 words
The product of claim 2 wherein the filler is selected from the group consisting of mineral carbonate fillers and silica.
Claim 6
Dependent Claim 31 words
The product of claim 2 wherein the master mix comprises 1 to 20 parts of a polymer selected from the group consisting of vinyl acetate, ethylene-ethyl acetate, and ethylene-vinyl acetate polymers.
Claim 7
Dependent Claim 12 words
The product of claim 2 wherein the vinyl chloride stabilizer is α-phenylindole.
Claim 8
Dependent Claim 121 words
A process for processing a mixture of plastic materials comprising polyethylene containing traces of milk and polyvinylchloride which comprises grinding said mixture; ballistically sorting the ground mixture in order to adjust the composition of the mixture adding to the ground mixture a master mix comprising 0.1 to 5 parts of rongalite per 100 parts of the ground mixture, an amount of chlorinated polyethylene sufficient to bind the polyethylene to the polyvinyl chloride comprising up to 20 parts per 100 parts of the ground mixture, 0.1 to 5 parts of a stabilizer for polyvinyl chloride and 0 to 5 parts of a lubricant; extruding the combined mix; and molding the extruded product, wherein the rongalite prevents caramelization of the milk during processing.
Claim 9
Dependent Claim 121 words
A process for processing a mixture of plastic materials comprising polyethylene containing traces of milk and polyvinylchloride which comprises grinding said mixture; ballistically sorting the ground mixture in order to adjust the composition of the mixture adding to the ground mixture a master mix comprising 0.1 to 5 parts of rongalite per 100 parts of the ground mixture, an amount of chlorinated polyethylene sufficient to bind the polyethylene to the polyvinyl chloride comprising up to 20 parts per 100 parts of the ground mixture, 0.1 to 5 parts of a stabilizer for polyvinyl chloride and 0 to 5 parts of a lubricant; extruding the combined mix; and molding the extruded product, wherein the rongalite prevents caramelization of the milk during processing.
Claim 10
Dependent Claim 9 words
The product obtained by the process of claim 7.

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1981-01-09 1981-07-11 1982-01-10 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1985-01-09 1985-07-11 1986-01-10 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1989-01-09 1989-07-11 1990-01-10 $7700.00 Window Closed / Lapsed

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