Bio-based monomers and polymers made therefrom
OwnerYong Yang, Gary Dandreaux +3inventors
InventorsYong Yang, Gary Dandreaux, Cristian Grigoras, Changfeng Chen, Richard Geurtsen
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Abstract
Disclosed are architectural compositions, including aqueous paint and stain compositions, that utilized copolymers including bio-based cross-linking monomers and their synthetic analogues that are comparable to copolymers including DAAM cross-linking monomers. The bio-based cross-linking monomers are preferably synthetic version of the bio-based cross-linking monomers.
Claims17
An aqueous architectural coating comprising an optional opacifying pigment, a film-forming copolymer resin, and a diamine or a dihydrazide compound dispersed in an aqueous phase,
- wherein the film-forming copolymer resin includes at least one film-forming monomer, and a cross-linkable monomer with a structure:
- where R2 is H or CH3;
- R3 is OCH3;
- and R4 is CH3,
- wherein the cross-linkable monomer is a synthetic analogue of the bio-based monomer, and wherein the at least one film-forming monomer comprises a (meth)acrylate monomer and an optional styrene monomer, and
- wherein the copolymer resin is capable of forming a film on a substrate after the aqueous architectural coating is applied on said substrate and the aqueous phase evaporates.
An aqueous architectural coating comprising an optional opacifying pigment, a film-forming copolymer resin, and a diamine or a dihydrazide compound dispersed in an aqueous phase,
- wherein the film-forming copolymer resin includes at least one film-forming monomer, and a cross-linkable monomer with either the following structure:
- or the following structure
- wherein the cross-linkable monomer is a synthetic analogue of the bio-based monomer, and wherein the at least one film-forming monomer comprises a (meth)acrylate monomer and an optional styrene monomer, and
- wherein the copolymer resin is capable of forming a film on a substrate after the aqueous architectural coating is applied on said substrate and the aqueous phase evaporates.
A method for selecting a bio-based cross-linkable monomer with respect to a diacetone acrylamide (DAAM) monomer, wherein the bio-based cross-linkable monomer is copolymerized to form a bio-based film-forming copolymer resin capable of crosslinking using the diamine or dihydrazide compound to form a bio-based paint film on a substrate, said method comprises the steps of
- (i) ascertaining a scrubbability of the bio-based paint film, wherein if said scrubbability is greater than 1,000 cycles, or is within 20%, preferably within 15%, preferably within 10%, in terms of the number of cycles of a standard paint film formed with a standard film-forming copolymer resin with DAAM, then the scrubbability is acceptable;
- (ii) ascertaining a cleansability of the bio-based paint film, wherein if said cleansability is less than 2.0 CIEDE2000 units, or has a lower reading with a spectrophotometer than that of the standard paint film, then the cleansability is acceptable;
- (iii) ascertaining a tack resistance of the bio-based paint film, wherein if said tack resistance is within 7.5 units, preferably within 5 units, preferably within 2.5 units, of the tack resistance of the standard paint film, then the tack resistance is acceptable;
- (iv) ascertaining the block resistance of the bio-based paint film, wherein if said block resistance is the same as, or better than, or is within 1.0 unit of the block resistance of the standard paint film, then the block resistance is acceptable
- wherein if the bio-based paint film possesses at least two acceptable ratings out of four in steps (i)-(iv), as compared to the standard paint film, then said bio-based cross-linkable monomer is acceptable, and
- wherein the DAAM crosslinking monomer is present in the standard film-forming copolymer resin within ±5% mole percentage as the bio-based cross-linkable monomer is present in the bio-based film-forming copolymer resin.
Dependencies are inferred from the claim text.