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US 6,617,394 B2Granted
Dimer acid derivatives as enhancers
AssigneeAshland Inc.
InventorsCynthia L. Smith, Dennis H. Fisher
Life of this patent
Estimating the term…
Abstract
The invention relates to low molecular weight LPA surface quality enhancers derived from C36-44 dimer acids capped with a glycol or a polyether polyol. The capped dimer acids are incompatible in the cured matrix of a polyester molding composition.
Claims9
A resin composition comprising
- A. an unsaturated polyester resin,
- B. a thermoplastic low profile additive selected from the group consisting of polyurethanes, polyvinylacetates, polyacrylates, polymethacrylates, saturated polyesters, styrene polymers and mixtures thereof,
- C. an olefinically unsaturated monomer capable of copolymerizing with the unsaturated polyester resin, and
- D. a polycapped oligomer having a number average molecular weight of less than 2000 which is incompatible with the curing unsaturated polyester resin and the olefinically unsaturated monomer, where the polycapped oligomer is prepared by capping a dimer acid with a glycol, a polyether polyol or mixture thereof.
1 more element
A method of improving the performance of a thermoplastic low profile additive in a thermoset molding composition comprising;
- A. an unsaturated polyester resin,
- B. a thermoplastic low profile additive, and
- C. an olefinically unsaturated monomer capable of copolymerizing with the unsaturated resin,
- by adding
- D. a polycapped oligomer having a number average molecular weight of less than 2000, which is incompatible with the curing unsaturated polyester resin and the olefinically unsaturated monomer, where the polycapped oligomer is prepared by capping a dimer acid with a glycol, a polyether polyol of mixture thereof.
2 more elements
A cured thermoset polyester molded article comprising the reaction product of;
- A. an unsaturated polyester resin,
- B. a thermoplastic low profile additive,
- C. an olefinically unsaturated monomer capable of copolymerizing with the unsaturated polyester resin, and
- E. a polycapped oligomer which is incompatible with the curing unsaturated polyester resin and the olefinically unsaturated monomer, where the polycapped oligomer with a number average molecular weight of less than 2000 is prepared by capping a dimer acid with a glycol, polyether polyol or mixtures thereof.
1 more element
Dependencies are inferred from the claim text.