05-18-2013, 02:09 PM
#1
  • mark1966
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  • Canberra [the capital city of] Australia
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I'm aware that the beautiful butterscotch colours on the older brushes is a result of UV impacting the underlying catalin used in the handles.

My question is when did the handle material change to more robust modern plastics that will not 'suffer' from this effect?

I'm presuming that my modern brushes will not be effected, but what about some of the older 'Somerset' era Simpson brushes?

Obviously Gary would know when the stock changed but does anybody else have any idea?

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 05-18-2013, 05:01 PM
#2
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The older catalin will butterscotch but I doubt the modern materials will.

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 05-18-2013, 05:23 PM
#3
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Although not answering fully the brush question, celluloid, Bakelite, and Catalin plastics are chronicled here in the following sites. Antique jewelry and radio sites also discuss these plastics in great detail.

1931 and 1953 saw introductions of such replacement materials.

http://www.thecarrotbox.com/plastic/

http://www.celluloidforever.co/BakeliteorCelluloid.html

http://www.coololdgames.com/agingplast.html

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 05-18-2013, 05:27 PM
#4
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Good information Gary.

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 05-18-2013, 10:38 PM
#5
  • mark1966
  • Member
  • Canberra [the capital city of] Australia
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Thanks Gary, great info.

So I presume that by the time Simpson moved to Somerset Catalin would have started to have been phased out and thus the brushes from then will not butterscotch.

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