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Home  > Forum  > Coatings & raw material failures  > Polyisobutene water based emulsions

Sunday, 15 September 2019

Polyisobutene water based emulsions

1 Post

Friday 01 October 1999 1:00:00 am

I would like to know whether polyisobutene
water based emulsions can be used as a coating
and if so why it has advantages over other
polymers

Thanks

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Tuesday 02 November 1999 1:00:00 am

Polyisobutylenes vary in consistency, depending on their molecular mass, from oil-like (low polymers) through soft resin to rubber-like (in the case of moderately to very highly polymerised species). Their use as paint binders is confined to special purposes, however; they are used mainly for applications where hardness is less important than maintaining flexibility even at low temperatures. Such a material can be processed both as an aqueous dispersion and dissolved in aromatic and aliphatic solvents, though with limited solubility.
More important than direct use for coating purposes is the use of polyisobutylene types in combinations with other film-forming substances, e.g. based on bitumen, polyethylene, rubber and similar aliphatic substances. The coating, sealing, adhesive and impregnating materials formulated according to this principle appear to be effectively plasticised by the addition of isobutylene. Isobutylene-styrene copolymers have also gained a certain amount of importance in the building conservation and corrosion protection sector alike, thanks to their good resistance to oxidation and weathering.

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