Aqueous polyurethane dispersion for waterproof breathable coatings
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IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C09D-175/06
C08G-018/66
C08G-018/75
C08G-018/08
C09D-175/04
C08G-018/42
D06N-003/14
출원번호
US-0344416
(2012-09-11)
등록번호
US-9783701
(2017-10-10)
우선권정보
EP-11181002 (2011-09-13)
국제출원번호
PCT/EP2012/067727
(2012-09-11)
§371/§102 date
20140312
(20140312)
국제공개번호
WO2013/037767
(2013-03-21)
발명자
/ 주소
Dörr, Sebastian
Grablowitz, Hans Georg
Viala, Sophie
Feller, Thomas
Michaelis, Thomas
출원인 / 주소
Covestro Deutschland AG
대리인 / 주소
Drinker Biddle & Reath LLP
인용정보
피인용 횟수 :
0인용 특허 :
5
초록▼
An aqueous polyurethane dispersion comprises a polyurethane polymer obtainable by the reaction of an isocyanate-functional polyurethane prepolymer A) with an isocyanate-reactive component B), wherein the isocyanate-functional prepolymer A) is obtainable by the reaction of a mixture comprising: a pol
An aqueous polyurethane dispersion comprises a polyurethane polymer obtainable by the reaction of an isocyanate-functional polyurethane prepolymer A) with an isocyanate-reactive component B), wherein the isocyanate-functional prepolymer A) is obtainable by the reaction of a mixture comprising: a polyol component comprising a polyester polyol obtainable by the reaction of a mixture comprising an aliphatic dicarboxylic acid and at least one diol selected from the group consisting of linear aliphatic diols and a branched aliphatic diols; and a polyisocyanate component comprising ≧50 weight-%, based on the total weight of polyisocyanates, of dicyclohexylmethane diisocyanate. The isocyanate-reactive component B) comprises a compound comprising sulfonate groups which is employed in an amount of ≧3.5 weight-% to ≦10 weight-%, based on the total weight of the polyol component, the polyisocyanate component and the isocyanate-reactive component B). The invention also concerns the use of such an aqueous polyurethane dispersion for coatings, a method of manufacturing a coated substrate and to a coated substrate.
대표청구항▼
1. An aqueous polyurethane dispersion comprising a polyurethane polymer obtained by the reaction of an isocyanate-functional polyurethane prepolymer A) with an isocyanate-reactive component B), whereinthe isocyanate-functional prepolymer A) is obtained by the reaction of a mixture comprising: a poly
1. An aqueous polyurethane dispersion comprising a polyurethane polymer obtained by the reaction of an isocyanate-functional polyurethane prepolymer A) with an isocyanate-reactive component B), whereinthe isocyanate-functional prepolymer A) is obtained by the reaction of a mixture comprising: a polyol component comprising a polyester polyol obtained by the reaction of a mixture comprising adipic acid, 1,6-hexanediol and neopentyl glycol, wherein the molar ratio of 1,6 hexane diol to neopentyl glycol is in a range of ≧1.5:1 to ≦2.5:1; anda polyisocyanate component comprising ≧99 weight-% to ≦100 weight-%, based on the total weight of polyisocyanates, of dicyclohexylmethane diisocyanate;and wherein the isocyanate-reactive component B) comprises 2-[(2-aminoethyl)amino]ethanesulfonic acid and/or salts thereof, in an amount of ≧3.5 weight-% to ≦6 weight-%, based on the total weight of the polyol component, the polyisocyanate component and the isocyanate-reactive component B),and wherein the dispersion applied as a coating exhibits a water vapor transmission rate of ≧16800 g/m2/d to ≦22900 g/m2/d. 2. The dispersion according to claim 1, wherein the polyester polyol has a number-average molecular weight of ≧1000 g/mol to ≦2000 g/mol. 3. The dispersion according to claim 1, wherein the isocyanate-reactive component B) further comprises a polyamine chain extender in an amount of ≧5 weight-% to ≦15 weight-% based on the total weight of the isocyanate-reactive component B). 4. A method for the production of water vapor-permeable coatings comprising applying the aqueous polyurethane dispersion according to claim 1 to a substrate. 5. A method of manufacturing a coated substrate, comprising the steps of providing a substrate and coating the substrate with an aqueous polyurethane dispersion according to claim 1. 6. The method according to claim 5, further comprising the step of drying the aqueous polyurethane dispersion. 7. The method according to claim 5, wherein the substrate is selected from the group consisting of textiles, metal surfaces, glass surfaces, ceramic surfaces, concrete surfaces, stone surfaces, leather surfaces and synthetic polymer surfaces. 8. A coated substrate comprising a coating which comprises an aqueous or dried polyurethane dispersion according to claim 1. 9. The coated substrate according to claim 8, wherein the substrate is selected from the group consisting of textiles, metal surfaces, glass surfaces, ceramic surfaces, concrete surfaces, stone surfaces, leather surfaces and synthetic polymer surfaces. 10. The coated substrate according to claim 8, wherein the coating has a water vapor transmission rate of ≧16800 g/m2/d to ≦22900 g/m2/d. 11. The dispersion according to claim 1, wherein the polyisocyanate component is dicyclohexylmethane diisocyanate. 12. The dispersion according to claim 3, wherein the polyamine chain extender is ethylenediamine. 13. The dispersion according to claim 1, wherein the polyisocyanate component is dicyclohexylmethane diisocyanate, wherein the isocyanate-reactive component B) further comprises a polyamine chain extender in an amount of ≧5 weight-% to ≦15 weight-% based on the total weight of the isocyanate-reactive component B), and wherein the polyamine chain extender is ethylenediamine. 14. An aqueous polyurethane dispersion consisting of a polyurethane polymer obtained by the reaction of an isocyanate-functional polyurethane prepolymer A) with an isocyanate-reactive component B), whereinthe isocyanate-functional prepolymer A) is obtained by the reaction of a mixture comprising: a polyol component comprising a polyester polyol obtained by the reaction of a mixture comprising adipic acid, 1,6-hexanediol and neopentyl glycol, wherein the molar ratio of 1,6 hexane diol to neopentyl glycol is in a range of ≧1.5:1 to ≦2.5:1; anda polyisocyanate component comprising ≧99 weight-% to ≦100 weight-%, based on the total weight of polyisocyanates, of dicyclohexylmethane diisocyanate;and wherein the isocyanate-reactive component B) comprises 2-[(2-aminoethyl)amino]ethanesulfonic acid and/or salts thereof, in an amount of ≧3.5 weight-% to ≦6 weight-%, based on the total weight of the polyol component, the polyisocyanate component and the isocyanate-reactive component B),and wherein the dispersion applied as a coating exhibits a water vapor transmission rate of ≧10000 g/m2/d to ≦25000 g/m2/d.
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이 특허에 인용된 특허 (5)
Schutze Detlef-Ingo,DEX ; Thoma Wilhelm,DEX ; Nachtkamp Klaus,DEX ; Pedain Josef,DEX ; Schmitz Reinold,DEX, Aqueous coating compositions and their use for the preparation of coatings that are permeable to water vapor.
Schutze Detlef-Ingo,DEX ; Thoma Wilhelm,DEX ; Nachtkamp Klaus,DEX ; Pedain Josef,DEX ; Schmitz Reinold,DEX, Aqueous coating compositions and their use for the preparation of coatings that are permeable to water vapor.
Pedain Josef (Cologne DEX) Schutze Detlef-Ingo (Cologne DEX) Thoma Wilhelm (Leverkusen DEX) Nachtkamp Klaus (Duesseldorf DEX), Coating compositions and their use for the preparation of coatings permeable to water vapor.
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