US2005186869A1PendingUtilityA1

Method for coating a substrate with a solvent-free yield point fluid

44
Priority: Jul 1, 2003Filed: Jul 1, 2004Published: Aug 25, 2005
Est. expiryJul 1, 2023(expired)· nominal 20-yr term from priority
Inventors:Michel MiskovicJean-Francois Chartrel
C08G 18/6685Y10T442/20D06N 3/0029D06N 3/14D06M 15/564
44
PatentIndex Score
0
Cited by
0
References
0
Claims

Abstract

The invention relates to a method for coating a substrate with a fluid. This method comprises the steps: (i) of supply of a substrate and of a yield point fluid; and (ii) of shearing of the fluid and of application of the fluid to the substrate, the fluid supplied comprising a solvent-free reactive polyurethane mixture.

Claims

exact text as granted — not AI-modified
1 . Method for coating a substrate with a fluid, comprising the steps of: 
 (i) supplying of a substrate and of a yield point fluid; and    (ii) shearing of the fluid and applying of the fluid to the substrate;    in which the fluid supplied comprises a solvent-free reactive polyurethane mixture.    
     
     
         2 . Method for coating a substrate with a fluid according to  claim 1 , in which the reactive mixture supplied comprises characteristics of: 
 Brookfield viscosity at 23° C. between 100 and 200 000 mPa·s;    yield point between 1 and 5000 Pa; and    yield point lag time between 1 and 20 seconds.    
     
     
         3 . Method for coating a substrate with a fluid according to  claim 1 , in which the reactive mixture supplied comprises characteristics of: 
 Brookfield viscosity at 23° C. between 200 and 4000 mPa·s;    yield point between 10 and 500 Pa; and    yield point lag time between 2 and 10 seconds.    
     
     
         4 . Method for coating a substrate with a fluid, according to  claim 1 , in which the reactive polyurethane mixture supplied comprises: 
 at least one polyol;    at least one polyisocyanate; and    at least one polyamine of which the quantity represents 0.1 to 3% of the total weight of the reactive mixture.    
     
     
         5 . Method for coating a substrate with a fluid, according to  claim 1 , in which the viscosity of the fluid decreases when a shear stress is applied to the fluid.  
     
     
         6 . Method for coating a substrate with a fluid, according to  claim 1 , in which the shearing in step (ii) is obtained by setting the substrate in relative motion in relation to the fluid.  
     
     
         7 . Method for coating a substrate with a fluid, according to  claim 1 , further comprising a step: 
 (iii) of stretching of the substrate, at least partially concomitant with the fluid shearing step.    
     
     
         8 . Method for coating a substrate with a fluid, according to  claim 7 , in which the substrate supplied in step (i) is a meshed substrate and in which the step (iii) is a step of stretching of the meshes of the substrate.  
     
     
         9 . Method for coating a substrate with a fluid, according to  claim 1 , further comprising a step: 
 (iv) of heating of the substrate.    
     
     
         10 . Method for coating a substrate with a fluid, according to  claim 4 , in which the reactive mixture supplied comprises at least one aromatic polyamine.  
     
     
         11 . Method for coating a substrate with a fluid, according to  claim 4 , in which the reactive mixture supplied comprises at least one polyether polyol, with molecular weight between 200 and 9000 and with hydroxyl functionality between 2.0 and 4.6.  
     
     
         12 . Method for coating a substrate with a fluid, according to  claim 4 , in which the reactive mixture supplied presents an NCO/OH ratio between 1 and 2.  
     
     
         13 . Method for coating a substrate with a fluid, according to  claim 4 , in which the reactive mixture supplied presents an NCO/OH ratio between 1.1 and 1.4.  
     
     
         14 . Method for coating a substrate with a fluid, according to  claim 4 , in which the reactive mixture supplied comprises a catalyst.  
     
     
         15 . Method for coating a substrate with a fluid, comprising the steps of: 
 (i) supplying of a substrate and of a yield point fluid; and    (ii) shearing of the fluid and applying of the fluid to the substrate;    (iii) stretching of the substrate, at least partially concomitant with the fluid shearing step;    in which the fluid supplied comprises a solvent-free reactive polyurethane mixture and comprises characteristics of:    Brookfield viscosity at 23° C. between 200 and 4000 mPa·s;    yield point between 10 and 500 Pa; and    yield point lag time between 2 and 10 seconds.    
     
     
         16 . Method for coating a substrate with a fluid, according to  claim 15 , in which the reactive polyurethane mixture supplied comprises: 
 at least one polyol;    at least one polyisocyanate; and    at least one polyamine of which the quantity represents 0.1 to 3% of the total weight of the reactive mixture.    
     
     
         17 . Method for coating a substrate with a fluid, according to  claim 15 , in which the viscosity of the fluid decreases when a shear stress is applied to the fluid.  
     
     
         18 . Method for coating a substrate with a fluid, according to  claim 15 , in which the shearing in step (ii) is obtained by setting the substrate in relative motion in relation to the fluid.  
     
     
         19 . Method for coating a substrate with a fluid, according to  claim 15 , in which the substrate supplied in step (i) is a meshed substrate and in which the step (iii) is a step of stretching of the meshes of the substrate.  
     
     
         20 . Method for coating a substrate with a fluid, according to  claim 15 , further comprising a step: 
 (iv) of heating of the substrate.    
     
     
         21 . Method for coating a substrate with a fluid, comprising the steps of: 
 (i) supplying of a substrate and of a yield point fluid; and    (ii) shearing of the fluid and applying of the fluid to the substrate;    (iii) stretching of the substrate, at least partially concomitant with the fluid shearing step;    in which the fluid supplied comprises a solvent-free reactive polyurethane mixture and comprises:    at least one polyol;    at least one polyisocyanate; and    at least one polyamine of which the quantity represents 0.1 to 3% of the total weight of the reactive mixture.    
     
     
         22 . Method for coating a substrate with a fluid, according to  claim 21 , in which the shearing in step (ii) is obtained by setting the substrate in relative motion in relation to the fluid.  
     
     
         23 . Method for coating a substrate with a fluid, according to  claim 21 , in which the substrate supplied in step (i) is a meshed substrate and in which the step (iii) is a step of stretching of the meshes of the substrate.  
     
     
         24 . Method for coating a substrate with a fluid, according to  claim 21 , further comprising a step: 
 (iv) of heating of the substrate.    
     
     
         25 . Method for coating a substrate with a fluid, according to  claim 21 , in which the reactive mixture supplied comprises at least one aromatic polyamine.  
     
     
         26 . Method for coating a substrate with a fluid, according to  claim 21 , in which the reactive mixture supplied comprises at least one polyether polyol, with molecular weight between 200 and 9000 and with hydroxyl functionality between 2.0 and 4.6.  
     
     
         27 . Method for coating a substrate with a fluid, according to  claim 21 , in which the reactive mixture supplied presents an NCO/OH ratio between 1 and 2.  
     
     
         28 . Method for coating a substrate with a fluid, according to  claim 21 , in which the reactive mixture supplied presents an NCO/OH ratio between 1.1 and 1.4.  
     
     
         29 . Method for coating a substrate with a fluid, according to  claim 21 , in which the reactive mixture supplied comprises a catalyst.  
     
     
         30 . A coated substrate coated by the method for coating a substrate of  claim 1 .  
     
     
         31 . Coated substrate according to  claim 30 , in which the substrate is a self-clinging textile.  
     
     
         32 . A coated substrate coated by the method for coating a substrate of  claim 15 .  
     
     
         33 . Coated substrate according to  claim 32 , in which the substrate is a self-clinging textile.  
     
     
         34 . A coated substrate coated by the method for coating a substrate of  claim 21 .  
     
     
         35 . Coated substrate according to  claim 34 , in which the substrate is a self-clinging textile.

Join the waitlist — get patent alerts

Track US2005186869A1 — get alerts on status changes and closely related new filings.

We store only your email — no account needed. See our privacy policy.