Assignment for the patent application “POLYOLEFIN BLENDS CONTAINING GROUND VULCANIZED RUBBER” from Edgar A. Gonzalez to ReRub AB (now Ecorub AB)

This document is in the public domain, published by Europian Patent Office. The original of this document is kept att the address:

https://register.epoline.org/espacenet/application?documentId=ECFOO9U1DHXBS06&number=EP00200710&lng=en&npl=false

October 16,2000

European Patent Office
Branch at the Hague
P.O Box 5818
NL2280HV Hague
The Netherlands
 
 

Sir or Madam,
 

I am enclosing herewith for filing the following assignment for the patent application No. 00200710.2 entitled “POLYOLEFIN BLENDS CONTAINING GROUND VULCANIZED RUBBER” dated February 28, 2000 from Edgar A. Gonzalez to ReRub AB.

My check in the amount of $64.69 USD is enclosed to cover the filing fee. Please send the recorded assignment and any future correspondance regarding this application to:

ReRub AB
Maskingatan 2
S-930 47 BYSKE
Sweden
Attention-Ake Paulson

Sincerely,

Edgar A. Gonzalez
Inventor

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ASSIGNMENT

WHEREAS, I , Edgar A. Gonzalez, citizen of the United States, residing at 14555 Eby Road, Creston, Ohio 44217, have invented certain novel and useful improvements in "POL YOLEFIN BLENDS CONTAINING GROUND VULCANIZED RUBBER" for which I have made application No. 00200710.2 for Letters Patent of the European Patent Office and of which I am the true inventor, and

WHEREAS, ReRub AB, a Swedish Company, having its principal place of business at Maskingatan 2 S-93047 Byske, Sweden, is desirous of acquiring the entire right, title and interest in and to said application and Letters Patent to be obtained therefor in Europe;

NOW, THEREFORE, I, Edgar A. Gonzalez, subject to the provisions of the Sales Agreement executed between me and ReRub AB dated September 1, 2000, have sold, assigned, transferred and set over, and by these presents do hereby sell, assign, transfer and set over unto said ReRub AB, its successors and assigns, the entire and exclusive right, title and interest in and to said application executed by me on February 28, 2000, preparatory to obtaining Letters Patent of the European Patent Office therefor, and to Letters Patent to be obtained for said invention in Europe and any and all reissues, divisions, extensions or continuations thereof in Europe including all rights to any accrued damages arising out of infringement during the time preceding and following grant of the Letters Patent and execution or recording of this assignment; and

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I HEREBY REQUEST the European Patent Office to issue said Letters Patent to said ReRub AB as the assignee of my interest for the sole use of said assignee and its successors and assigns: and

I HEREBY AGREE to execute any further papers necessary to secure said assignee in its full and complete enjoyment of its right to said application, Letters Patent, reissues, divisions, extensions and continuations.

IN TESTIMIONY WHEREOF. we have hereunto set our hands this 16 th day of October

EDGAR A. GONZALEZ

RERUB - AKE PAULSSON

STATE OF OHIO
COUNTY OF WAYNE

On this 16th day of October 2000, before me personally appeared

EDGAR A. GONZALEZ

to me known and known to me to be the person mentioned in and who executed the foregoing Assignment; and they duly acknowledged to me that he executed the same of his own free will and for the purposes therein set forth.

Notary Public

Dale J.WIRTH

Notary Public. State Of Ohio

My Commission Expires Feb 21 f 2002

page 3

MSc thesis from Luleå tekniska universitet (Luleå Univeristy of Technology/Maskinteknik/Polymer Engineering)

Author: Jinxia Li; [2008]

Keywords: Recycled EPDM rubber; Unvulcanized rubber; LDPE; EMA; Reactive compatibilization; Non-reactive compatibilization; Ethylene octene copolymer; Phenolic resins; Tensile properties; Tear strength; Microstructure; Pressing pressure; rubber recycling,

Abstarct: Blends containing recycled EPDM rubber and thermoplastics, EMA and LDPE were studied. Two compatibilization methods, reactive and non-reactive, were evaluated. Ethylene octene copolymer (EXACT 0210) was used as non-reactive compatibilizer. Phenolic resins (SP1045 & HRJ10518) were reactive agents. There existed an optimal composition of compatibilizers which were 25wt% in the case of reactive and non-reactive agents added to 15wt%EMA and 55-60wt% EPDM rubber.

EXACT-compatibilized blends gave high elongation at break while phenolic resin-compatibilized mixtures gave high stiffness in comparison with the chosen reference material. Comparison in compatibilizing capabilities HRJ-10518 and SP-1045 was carried out. The former one had better capabilities than the latter at high compatibilizer content. Talcum was used as anti-agglomeration agent but failed to work properly. Pressing pressure could be minimized without any adverse effect. Non-vulcanized rubber was used to enhance tear strength but its effect was small by assuming that there exists degradation of the interfacial surface at high temperature. SEM analysis revealed homogeneous microstructure in both kinds of compatibilization. EXACT 0210-compatibilized blends showed more plastic deformation of the matrix than reactive blends. Stable connection between phases was also observed.

Tensile strength of the LDPE based blends were a little lower than that of EMA based blends and the hardness was a little higher. Compared to EMA based blends, the elongation at break was much lower while the young's modulus was much higher with LDPE based blends. Compression set of both LDPE and EMA based blends was high compared to the reference materials supplied by Rerub AB, Piteå.

Download MSc thesis from Luleå University