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A rubber stamp is an image or pattern that has been carved, molded, laser engraved, or vulcanized onto a sheet of rubber. Rubber stamping, also called stamping, is a craft in which some type of ink made of dye or pigment is applied to a rubber stamp, and used to make decorative images on some media, such as paper or fabric. [1] [2] [3] [4]
Butyl rubber gloves. Butyl rubber, sometimes just called "butyl", is a synthetic rubber, a copolymer of isobutylene with isoprene. The abbreviation IIR stands for isobutylene isoprene rubber. Polyisobutylene, also known as "PIB" or polyisobutene, (C 4 H 8) n, is the homopolymer of isobutylene, or 2-methyl-1-propene, on which butyl rubber is ...
As an inventor, his most important contribution was the development of butyl rubber. [1] [2] Sparks served as president of the American Chemical Society in 1966 and chairman of the National Research Council's Division of Chemistry and Technology from July 1953 to June 1955. [3] Sparks was the holder of 145 patents. [4]
Mail art has adopted and appropriated several of graphic forms already associated with the postal system. The rubber stamp officially used for franking mail, already utilized by Dada and Fluxus artists, has been embraced by mail artists who, in addition to reusing ready-made rubber stamps, have them professionally made to their own designs ...
In Europe these are today plastic self-inking stamps. Notaries also still use seals on a daily basis. At least in Britain, each registered notary has an individual personal seal, registered with the authorities, which includes his or her name and a pictorial emblem, often an animal—the same combination found in many seals from ancient Greece.
Robert McKee Thomas (1908 – July 23, 1984) was a co-inventor of butyl rubber, [1] [2] along with William J. Sparks. [3] Thomas held 75 patents, and directed the work of several notable polymer scientists including Francis P. Baldwin and Joseph Kennedy. [4]
Not just rubber for tires, but for all the polymers and plastics that create so much of what we depend on today, from the toothbrush you pick up in the morning to the light switch you turn off at ...
A rubber stamp is a political metaphor, referring to a person or institution with considerable de jure power but little de facto power — one that rarely or never disagrees with more powerful organizations. [1] Historian Edward S. Ellis used the term toy parliament to describe a rubber-stamp legislature.
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