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US 4,115,336 AGranted
Stable aqueous polyester-monomer emulsions
OwnerPierre Albert Crouzetinventor
Life of this patent
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Abstract
An emulsion formed by mixing water with a mixture consisting essentially of an unsaturated polyester resin and an unsaturated monomer, wherein said emulsion is so stable that demulsification does not occur when a setting agent of a kind which sets by hydration thereof is added thereto.
Claims15
A water in resin emulsion formed by mixing
- a. water with
- b. a mixture consisting essentially of
- i. an unsaturated polyester resin having a molecular weight from about 3,100 to 3,600 formed by a condensation polymerization reaction, which is allowed to proceed until the polyester has an acid number of no more than about 25, between polyhydric and polycarboxylic compounds or derivatives thereof, said polyhydric compounds being present in an excess over stoichiometric requirements, at least one of said compounds being unsaturated, the remainder being saturated;
- and
- ii. an unsaturated monomer,
- the mixture b) containing no more than about 30% by weight of the unsaturated monomer ii),
- wherein said emulsion is so stable that demulsification does not occur when a setting agent of a kind which sets by hydration thereof is added thereto.
4 more elements
Dependencies are inferred from the claim text.