Resinate Materials Group, Inc.

Michael Robert Christy

Rick Tabor

Kevin Anthony Rogers

Eric David Vrabel

Shakti L Mukerjee

Matthew James Beatty

Jack Rogers Kovsky

Matthew Thomas Brown

Adam William Emerson

Michael D Kellerman

Gary E Spilman

Woo-Sung Bae

Brian T Comstock-Reid

Gage Fryz

Matthew J Beatty

The present invention relates to coatings, particularly high performance coatings, containing a polyester polyol comprising recurring units derived from a polyacid source, poly(bisphenol-A carbonate) (PBAC), and a glycol. The PBAC is preferably recycled poly(bisphenol-A carbonate) (rPBAC). These coatings provide improved salt spray and stain resistance along with a variety of other coating performance attributes. The polyols can contain a significant recycle and biobased content, making them sustainable alternatives to petroleum based polyols.

High performance coatings

Polyester polyols made from thermoplastic polyesters are disclosed. The polyols can be made by heating a thermoplastic polyester such as virgin PET, recycled PET, or mixtures thereof, with a glycol to give a digested intermediate, which is then condensed with a dimer fatty acid to give the polyol. The invention includes a polyester polyol comprising recurring units of a glycol-digested thermoplastic polyester and a dimer fatty acid. The polyester polyol can also be made in a single step by reacting the thermoplastic polyester, glycol, and dimer acid under conditions effective to produce the polyol. High-recycle-content polyols having desirable properties and attributes for formulating polyurethane products, including aqueous polyurethane dispersions, can be made. The polyols provide a sustainable alternative to bio- or petrochemical-based polyols.

Polyester polyols from thermoplastic polyesters and dimer fatty acids

Semi-crystalline polyester polyols and their use in reactive hot-melt adhesives are disclosed. The polyols comprise recurring units of a C-Caliphatic diol, a C-Caliphatic dicarboxylic acid, and 1 to 20 wt. % of an aromatic dicarboxylic acid source, a polycarbonate, or a combination thereof. The polyols have a hydroxyl number within the range of 14 to 112 mg KOH/g. Reactive hot-melt adhesives from the polyols and composite structures produced using the adhesives are also disclosed. A minor proportion of aromatic dicarboxylic acid, polycarbonate content in the polyester polyol surprisingly improves the properties of reactive hot-melt adhesives when compared with a commercial hot-melt adhesive or an adhesive formulated using an all-aliphatic polyester polyol. The adhesives are useful for bonding a wide variety of substrates, including paper, wood, glass, ceramics, plastics, and metals.

Polyester polyols for reactive hot-melt adhesives

Polyester polyols made from recycled polyethylene terephthalate (rPET) and processes for making them are disclosed. The rPET is heated with a C-Cglycol reactant to give a digested intermediate comprising glycols and a terephthalate component, which comprises 45 to 70 wt. % of bis(hydroxyalkyl)terephthalates, and preferably lesser amounts of terephthalate dimers and trimers. Treatment of the digested intermediate with activated carbon gives a polyester polyol having a color index less than 20. The polyols have desirable hydroxyl numbers, viscosities, appearance, and other attributes for formulating polyurethane products and are a sustainable alternative to bio- or petrochemical-based polyols.

Recycle-content polyester polyols

The present invention relates to polyester polyols made from aromatic polyacid sources such as thermoplastic polyesters. The polyols can be made by heating a thermoplastic polyester such as virgin polyethylene terephthalate, recycled polyethylene terephthalate, or mixtures thereof, with a glycol to give a digested intermediate which is then reacted with a digestible polymer, which can be obtained from various recycle waste streams. The polyester polyols comprise a glycol-digested polyacid source and a further digestible polymer. The polyester polyols provide a sustainable alternative to petrochemical or biochemical based polyester polyols.

Polyester polyols from recycled polymers and waste streams

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Midland, MI, United States of America

Michael Robert Christy