Use of biobased sugar monomers in vinyl copolymers as latex binders and compositions based thereon
AssigneeEcosynthetix Ltd.
InventorsSteven Bloembergen, Ian J. McLennan, Do Ik Lee
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Abstract
The present invention provides the novel and nonobvious discovery that sugar macromers can be effectively used to provide a new generation of renewable comonomers for bio-synthetic hybrid paper binder systems having a controlled hydrophilic-hydrophobic balance for improved water retention and film forming properties, on machine runnability, offset printability, biodegradability, enhanced recyclability, and other performance attributes.
Claims28
A method of preparing a paper coating comprising opolymerization of a sugar macromer with vinyl comonomers via a water based polymerization process to produce sugar based copolymers having a dry glass transition temperature (Tg) ranging from −10 to 50° C. and a Tg in the wet state ranging from −40 to 45° C. and forming a mixture comprising particles of the sugar based copolymers and a pigment in water.
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A paper coating composition comprising particles produced by copolymerization of a sugar macromer with vinyl comonomers via a water based polymerization process to produce sugar based copolymers having a dry glass transition temperature (Tg) ranging from −10 to 50° C. and a Tg in the wet state ranging from −40 to 45° C. and a pigment.
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A composition comprising a copolymerization product of a sugar macromer and a vinyl comonomer wherein the vinyl comonomer is selected from the group consisting of a) styrene, b) butyl acrylate c) styrene-butadiene, d) styrene-butyl acrylate, e) butadiene, and f) mixtures thereof.
Dependencies are inferred from the claim text.