Maro Publications

Foam Rubber

Notes

Patent Abstracts

Patent Titles

*9/2/2013 
from 9/2/2013

Maro Encyclopedia

Elastomers

Foams

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Notes

“Foam rubber (also known as cellular, sponge, or expanded rubber)  refers to rubber that has been manufactured with a foaming agent to create an air-filled matrix structure.  Commercial foam rubbers are generally either polyurethane foam or natural foam rubber latex. it's also made from chemicals polyol.  Latex foam rubber, used in mattresses, is well known for its endurance.

Foam rubber was first produced in 1929 by Dunlop researcher E. A. Murphy using whipped latex.  Records trace back to as early as 500 B.C.E.  During this period Mayans and Aztecs harvested this latex for waterproofing and formation of children’s toy spheres.  Charles Goodyear invention of the vulcanization process for rubber in 1839 gave him the vision of a world filled with uses for this new durable elastic material. His ideas for chairs and mattresses made out of rubber were not seen until far after his death though.  The first United States patent was issued in the early 1900s for synthetic rubber.  In 1937 isocyanate based materials were first used for the formation of foam rubbers, after World War II styrene-butadiene rubber replaced many natural types of foam.  Foam rubbers have been used commercially for a wide range of applications since around the 1940s.  Currently polyurethane based foams make up over 90%, by weight, of the entire market for polyurethanes.  Transportation, construction, home furniture, noise reduction/vibration and carpet are the largest users of polyurethane, with construction at 27% and transportation at 21% respectively. Flexible foam is that leading material usage at 44% total volume, and rigid foam material at 28% of the United States market.”

(Foam Rubber, Wikipedia, 9/2/2013)

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Patent Abstracts

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Patent Titles

7/9/2013  

2. 8,481,155 
EPDM foam, producing method thereof, and sealing material 

5/21/2013

1. 8,445,556 
Cellular elastomer compositions 

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Interested!!
Bookmark this page to follow future developments!.
(RDC 7/16/2012)

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Roger D. Corneliussen
Editor
www.maropolymeronline.com

Maro Polymer Links
Tel: 610 363 9920
Fax: 610 363 9921
E-Mail: cornelrd@bee.net  

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Copyright 2013 by Roger D. Corneliussen.
No part of this transmission is to be duplicated in any manner or forwarded by electronic mail without the express written permission of Roger D. Corneliussen
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* Date of latest addition; date of first entry is 9/2/2013.