Polyurethane pultrusion article
First Claim
1. A polyurethane pultrusion article, comprising a polyurethane pultrusion composite and a coating layer applied thereon, wherein the coating layer is prepared from fluoroalkene-vinyl ether coating and/or polyvinylidene fluoride coating, wherein the polyurethane pultrusion composite comprises a polyurethane resin matrix and a reinforcement material, and is prepared by a polyurethane pultrusion process, wherein the polyurethane resin matrix is prepared from a polyurethane composition comprising:
- A) an isocyanate component comprising one or more polyisocyanates; and
B) an isocyanate-reactive component comprising;
b1) a first polyether polyol having a functionality of 2-3 and a hydroxyl number of 10-120 mgKOH/g;
b2) a second polyether polyol having a functionality of 3-8 and a hydroxyl number of 810-1900 mgKOH/g;
b3) a third polyether polyol having a functionality of 3-8 and a hydroxyl number of 150-800 mgKOH/g;
andb4) one or more isocyanate-reactive flame retardants comprising halogen and phosphorus;
wherein the amount of reinforcement material is 60-85 wt. % based on 100% by weight of the polyurethane pultrusion composite.
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Accused Products
Abstract
The invention provides a polyurethane pultrusion article comprising a polyurethane pultrusion composite and a coating layer applied thereon, wherein the polyurethane pultrusion composite comprises a polyurethane resin matrix and a reinforcement material, and is prepared by a polyurethane pultrusion process, wherein the polyurethane resin matrix is prepared from a polyurethane composition comprising: A) an isocyanate component comprising one or more polyisocyanates; B) an isocyanate-reactive component comprising: b1) a first polyether polyol having a functionality of 2-3 and a hydroxyl number of 10-120 mgKOH/g; b2) a second polyether polyol having a functionality of 3-8 and a hydroxyl number of 810-1900 mgKOH/g; b4) one or more isocyanate-reactive flame retardants. The polyurethane pultrusion article provided by the invention has both favorable flame retardance and good adhesion between the coating layer and the composite.
3 Citations
4 Claims
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1. A polyurethane pultrusion article, comprising a polyurethane pultrusion composite and a coating layer applied thereon, wherein the coating layer is prepared from fluoroalkene-vinyl ether coating and/or polyvinylidene fluoride coating, wherein the polyurethane pultrusion composite comprises a polyurethane resin matrix and a reinforcement material, and is prepared by a polyurethane pultrusion process, wherein the polyurethane resin matrix is prepared from a polyurethane composition comprising:
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A) an isocyanate component comprising one or more polyisocyanates; and B) an isocyanate-reactive component comprising; b1) a first polyether polyol having a functionality of 2-3 and a hydroxyl number of 10-120 mgKOH/g; b2) a second polyether polyol having a functionality of 3-8 and a hydroxyl number of 810-1900 mgKOH/g; b3) a third polyether polyol having a functionality of 3-8 and a hydroxyl number of 150-800 mgKOH/g; and b4) one or more isocyanate-reactive flame retardants comprising halogen and phosphorus; wherein the amount of reinforcement material is 60-85 wt. % based on 100% by weight of the polyurethane pultrusion composite. - View Dependent Claims (2, 3, 4)
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Specification