POLYESTER POLYMERS COMPRISING LIGNIN

• US 20150197667A1
• Filed: 01/15/2014
• Published: 07/16/2015
• Est. Priority Date: 01/15/2014
• Status: Abandoned Application

• Current Assignee: PPG Industries Ohio Incorporated (Nouryon BV)
• Original Assignee: PPG Industries Ohio Incorporated (Nouryon BV)
• Inventors: Bowman, Mark P., Conley, Carole A., Schwendeman, Irina G., Hibbert, Mercy M.
• Application Number:
  US14/155,397
• Publication Number:
  US 20150197667A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: B05D 2202/10 based on Fe
• CPC Class Codes: B05D 2202/25 based on Al
• CPC Class Codes: B05D 2350/65 metal layer
• CPC Class Codes: B05D 2401/10 Organic solvent B05D2401/21 takes precedence
• CPC Class Codes: B05D 2401/40 where the carrier is not clearly specified
• CPC Class Codes: B05D 2420/01 first layer from the substrate side
• CPC Class Codes: B05D 2425/01 top layer/ last layer, i.e. first layer from the top surface
• CPC Class Codes: B05D 2508/00 Polyesters
• CPC Class Codes: B05D 2602/00 Organic fillers
• CPC Class Codes: B05D 3/02 by baking B05D3/04 takes precedence
• CPC Class Codes: B05D 3/0254 After-treatment
• CPC Class Codes: B05D 7/14 to metal, e.g. car bodies involving a chemical reaction between the metal and the coating C23
• CPC Class Codes: B05D 7/16 using synthetic lacquers or varnishes
• CPC Class Codes: B05D 7/50 Multilayers
• CPC Class Codes: B05D 7/51 One specific pretreatment, e.g. phosphatation, chromatation, in combination with one specific coating pretreatment of metallic substrates C23C; pretreatment before coating in general B05D3/00
• CPC Class Codes: B05D 7/52 Two layers
• CPC Class Codes: B05D 7/53 Base coat plus clear coat type
• CPC Class Codes: B05D 7/54 No clear coat specified
• CPC Class Codes: B32B 15/012 one layer being formed of an iron alloy or steel, another layer being formed of aluminium or an aluminium alloy
• CPC Class Codes: B32B 15/04 comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material next to a bituminous or tarry layer B32B11/08; next to a water-setting substance layer B32B13/06; next to a glass layer B32B17/061; next to a cellulosic plastic layer B32B23/042
• CPC Class Codes: B32B 15/043 : of metal B32B15/01 takes precedence
• CPC Class Codes: B32B 15/08 : of synthetic resin
• CPC Class Codes: B32B 15/09 : comprising polyesters
• CPC Class Codes: B32B 2250/02 : 2 layers
• CPC Class Codes: B32B 2250/03 : 3 layers
• CPC Class Codes: B32B 2255/06 : on metal layer
• CPC Class Codes: B32B 2255/26 : Polymeric coating
• CPC Class Codes: B32B 2255/28 : Multiple coating on one surface
• CPC Class Codes: B32B 2307/752 : Corrosion inhibitor
• CPC Class Codes: B32B 2311/20 : Zinc
• CPC Class Codes: B32B 2311/24 : Aluminium
• CPC Class Codes: B32B 2311/30 : Iron, e.g. steel
• CPC Class Codes: B32B 2367/00 : Polyesters, e.g. PET, i.e. polyethylene terephthalate
• CPC Class Codes: B32B 27/20 : using fillers, pigments, thixotroping agents
• CPC Class Codes: B32B 27/36 : comprising polyesters
• CPC Class Codes: C07G 1/00 : Lignin; Lignin derivatives
• CPC Class Codes: C08G 63/12 : derived from polycarboxylic acids and polyhydroxy compounds
• CPC Class Codes: C08G 63/133 : Hydroxy compounds containing aromatic rings
• CPC Class Codes: C08G 63/20 : Polyesters having been prepared in the presence of compounds having one reactive group or more than two reactive groups
• CPC Class Codes: C08H 6/00 : Macromolecular compounds derived from lignin, e.g. tannins, humic acids
• CPC Class Codes: C08J 2367/00 : Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain of polyester-amides C08J2377/12; of polyester-imides C08J2379/08; Derivatives of such polymers
• CPC Class Codes: C08J 3/24 : Crosslinking, e.g. vulcanising, of macromolecules mechanical aspects B29C35/00; crosslinking agents C08K
• CPC Class Codes: C08J 7/042 : with two or more layers, where at least one layer of a composition contains a polymer binder
• CPC Class Codes: C08J 7/043 : Improving the adhesiveness of the coatings per se, e.g. forming primers adhesives in the form of films or foils characterised by the primer layers between the polymer carriers and the adhesives C09J7/50
• CPC Class Codes: C08K 3/011 : Crosslinking or vulcanising agents, e.g. accelerators
• CPC Class Codes: C08K 3/013 : Fillers, pigments or reinforcing additives
• CPC Class Codes: C08K 5/0025 : Crosslinking or vulcanising agents; including accelerators
• CPC Class Codes: C08L 67/00 : Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain of polyester-amides C08L77/12; of polyester-imides C08L79/08; Compositions of derivatives of such polymers
• CPC Class Codes: C08L 67/02 : Polyesters derived from dicarboxylic acids and dihydroxy compounds C08L67/06 takes precedence
• CPC Class Codes: C08L 67/03 : the dicarboxylic acids and dihydroxy compounds having the carboxyl- and the hydroxy groups directly linked to aromatic rings
• CPC Class Codes: C08L 67/08 : Polyesters modified with higher fatty oils or their acids, or with resins or resin acids
• CPC Class Codes: C08L 97/005 : Lignin
• CPC Class Codes: C09D 167/00 : Coating compositions based on polyesters obtained by reactions forming a carboxylic ester link in the main chain based on polyester-amides C09D177/12; based on polyester-imides C09D179/08; Coating compositions based on derivatives of such polymers
• CPC Class Codes: C09D 167/02 : Polyesters derived from dicarboxylic acids and dihydroxy compounds C09D167/06 takes precedence
• CPC Class Codes: C09D 167/03 : the dicarboxylic acids and dihydroxy compounds having the carboxyl - and the hydroxy groups directly linked to aromatic rings
• CPC Class Codes: C09D 167/08 : Polyesters modified with higher fatty oils or their acids, or with natural resins or resin acids
• CPC Class Codes: C09D 197/00 : Coating compositions based on lignin-containing materials based on polysaccharides C09D101/00 - C09D105/00
• CPC Class Codes: C09D 7/40 : Additives
• CPC Class Codes: C09D 7/65 : macromolecular C09D7/41-C09D7/48 take precedence
• CPC Class Codes: Y10T 428/31681 : Next to polyester, polyamide or polyimide [e.g., alkyd, glue, or nylon, etc.]
• CPC Class Codes: Y10T 428/31786 : Of polyester [e.g., alkyd, etc.]
• CPC Class Codes: Y10T 428/3179 : Next to cellulosic

Abstract

Disclosed is a polyester polymer prepared from a reaction mixture comprising a polyacid component and a polyol component that comprises lignin. Residues of lignin are incorporated into the backbone of the polyester polymer. Coatings comprising the same and substrates coated at least in part with such coatings are also disclosed.

Claims

1. A thermoset coating composition comprising a polyester prepared from a reaction mixture comprising (a) a polycarboxylic acid component and (b) a polyol component comprising lignin, such that residues of lignin are incorporated into the polyester.

2. The coating composition of claim 1, wherein said polyol component further comprises a hydroxyl functional component other than lignin.

3. The coating composition of claim 2, wherein the weight ratio of the lignin to the hydroxyl functional component is 1:

30 to 30;

1.

4. The coating composition of claim 2, wherein lignin comprises 1 to 50 weight % of the polyester, with the weight % based on total solids.

5. The coating composition of claim 1, wherein the lignin comprises wheat straw lignin.

6. The coating composition of claim 1, wherein the lignin comprises wood lignin.

7. A coating system comprising a primer coating and at least one coating layer thereover, the primer coating comprising the coating composition of claim 1.

8. The coating system of claim 7, wherein said at least one coating layer comprises a colored pigment.

9. The coating system of claim 7, wherein said at least one coating layer comprises a clearcoat layer.

10. A substrate coated at least in part with the coating composition of claim 1.

11. The substrate of claim 10, wherein the substrate is metallic.

12. The substrate of claim 11, wherein the coating composition provides increased protection of the metallic substrate from corrosion as compared to a substrate coated with a coating composition comprising a polyester polymer not incorporating lignin.

13. The substrate of claim 10, wherein the substrate is wood or plastic.

14. A method of protecting a substrate from corrosion comprising applying to the substrate the coating composition of claim 1.

15. The method of claim 14 wherein the substrate is metallic.