1st set real seashells embedded in probably
polyester
Animal Head Set...acetate
Umbrella..celluloid
outer 6 are bakelite
Dominoes Set..acetate
School Set.. casein
Music Set..bakelite
(CLICK ON IMAGE TO ENLARGE)
(CLICK ON IMAGE TO ENLARGE)
I found this interesting when I went to take
a image of this card the music set had 2 buttons wrong side up, when I changed
them I noticed the 2 (1st and 4th) buttons are so much lighter in color than the
others my thought was the card had been exposed to sunlight as the previous
owner had the card in a frame and probably hanging on a wall.
So I asked Jocelyn Howells and here is her
answer
“It's well known that Bakelite changes
color with time. It's the phenolic resin in the ingredients that is naturally
orangish and dominates all other colors. Oxidation has been stated as the
cause, but no doubt sunlight figures into it as well, or maybe sunlight speeds
up the oxidation process. I have a salesman's original card of bakelite buttons
with each button labeled with its color. Very interesting to see what the
original color was, and what it is today. Of course, there is no way to know
whether that card was exposed to the light during its lifetime, or stored away
in darkness. So I tend to think that it is exposure to oxygen, causing some of
the phenolic resin to "leach" to the surface and change its color. BTW, the
surface of bakelite pieces can be polished down to the original color, which I
understand has been done with lots of the bakelite jewelry. But sooner or
later, the color change occurs again, sometimes fairly
quickly.”
-----------------------
Thanks to Jocelyn for this information
and also helping me identify the technical terms of the
plastics
-------------------
Jocelyn is the
author of three books about identifying button materials, including two on
synthetic polymers exclusively, based on more than 10 years of intense research
and study. Read more at her website http://mysite.ncnetwork.net/buttonjoss
or contact her
at buttonjoss@aol.com
Her books are a must have for
button collectors
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