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US 6,280,846 B1Granted
Resins and composites containing them
AssigneeCray Valley S.A.
InventorsPaul Darby, Paul Sutton
Life of this patent
Estimating the term…
Abstract
Curable compositions for making fibre-reinforcement structural composites such as GRP comprise an unsaturated polyester resin base, a co-polymerizable monomer and preferably, one or more performance-enhancing additives. Thixotropy is endowed by 5% by weight or less of an organic amide.
Claims20
A composition for moulding of fibre-reinforced structural composites, the composition comprising:
- (a) an unsaturated polyester resin,
- (b) a co-polymerisable monomer, and
- (c) from 0.4% to 5% by weight of the total composition of an organic amide thixotropic agent;
- the composition comprising less than 2% by weight of the total composition of non-polymerisable organic solvent.
1 more element
A composition for moulding of fibre-reinforced structural composites, the composition comprising:
- (a) an unsaturated polyester resin,
- (b) a co-polymerisable monomer,
- (c) from 0.4% to 5%, by weight of the total composition, of an organic amide thixotropic agent which has acid and amine values each less than 10 mgKOH/g,
- (d) fumed silica, and
- (e) at least one performance-enhancing additive;
- the composition comprising less than 2%, by weight of the total composition, of non-polymerisable organic solvent.
3 more elements
Dependencies are inferred from the claim text.