Loading patent…
AssigneeColormatrix Europe Limited
InventorsSteven Burgess Tattum, Matthew Jackson
Estimating the term…
The present invention relates to the use of a fatty acid ester as a slip additive in the production of moulded polyethylene terephthalate articles, to a thermoplastic moulding composition comprising a polyethylene terephthalate and a fatty acid ester selected to be effective for reducing the co-efficient of friction of moulded articles formed from the composition, to a moulded polyethylene terephthalate article comprising a fatty acid ester selected to be effective in reducing the co-efficient of friction of the moulded article, and to a process for producing a moulded thermoplastic article comprising providing a thermoplastic moulding composition comprising polyethylene terephthalate, admixing with the thermoplastic moulding composition at least one fatty acid ester selected to be effective in reducing the co-efficient of friction of the moulded article, heating the composition and moulding the hot composition so as to form a moulded article.
A method of using a fatty acid ester as a slip additive in a thermoplastic moulding composition in the production of moulded polyethylene terephthalate articles in the form of bottle preforms, the method comprising incorporating said fatty acid ester into a bottle perform moulded from polyethylene terephthalate, wherein the ΔE value in a bottle blown from the preform is less than 0.5, wherein the ΔE=(ΔL*2+Δa*2+Δb*2)1/2 wherein ΔL* is the difference in the L value between the bottle including the additive and a standard which does not include the additive, Δa* is the difference in a* value between the bottle including the additive and a standard which does not include the additive and Δb* is the difference in b* value between the bottle including the additive and the standard which does not include the additive.
(canceled)
(canceled)
A moulded polyethylene terephthalate article comprising a fatty acid ester selected to be effective in reducing the co-efficient of friction of the moulded article.
A process for producing a moulded thermoplastic article comprising providing a thermoplastic moulding composition comprising polyethylene terephthalate, admixing with the thermoplastic moulding composition at least one fatty acid ester selected to be effective in reducing the co-efficient of friction of the moulded article, heating the composition and moulding the hot composition so as to form a moulded article, wherein the article is a bottle perform, wherein the ΔE value in a bottle blown from the preform is less than 0.5, wherein ΔE=(ΔL*2+Δa*2+Δb*2)1/2 wherein ΔL* is the difference in the L value between the bottle including the additive and a standard which does not include the additive, Δa* is the difference in a* value between the bottle including the additive and a standard which does not include the additive and Δb* is the difference in b* value between the bottle including the additive and the standard which does not include the additive.
A method of improving packing efficiency of bottle preforms in a container, the method comprising producing bottle preforms comprising polyethylene terephthalate incorporating a fatty acid ester as a slip additive;
A container containing bottle preforms comprising polyethylene terephthalate incorporating a fatty acid ester as a slip additive for improving packing efficiency of the bottle preforms in the container.
Dependencies are inferred from the claim text.