IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0485773
(2002-09-25)
|
우선권정보 |
DE-0047546 (2001-09-26) |
국제출원번호 |
PCT//EP02/10724
(2004-02-04)
|
§371/§102 date |
20040204
(20040204)
|
국제공개번호 |
WO03//02931
(2003-04-10)
|
발명자
/ 주소 |
- Schwarte, Stephan
- Vesper, Willi
- Anaya-Sanz, Jose-Ignacio
- Ledantec, Alain
|
출원인 / 주소 |
|
인용정보 |
피인용 횟수 :
20 인용 특허 :
3 |
초록
(C) at least one compound containing on average per molecule at least two isocyanate-reactive functional groups;process for its preparation, and its use as a binder in coating materials, adhesives, and sealing compounds.
대표청구항
▼
1. A self-crosslinking, branched polyurethane comprising a reaction product of an isocyanato-terminated polyurethane prepolymer and at least one compound containing on average per molecule at least two isocyanate-reactive functional groups, wherein the isocyanato-terminated polyurethane comprises a
1. A self-crosslinking, branched polyurethane comprising a reaction product of an isocyanato-terminated polyurethane prepolymer and at least one compound containing on average per molecule at least two isocyanate-reactive functional groups, wherein the isocyanato-terminated polyurethane comprises a reaction product of(A) at least one hydroxyl-terminated polyester with a number-average molecular weight of from 500 to 4000 daltons, containing, based on the polyester (A), (a1) from 60 to 95% by weight of structural units derived from aliphatic starting products and (a2) from 5 to 40% by weight of structural units derived from aromatic starting products, and (B) at least one partially blocked polyisocyanate containing on average per molecule more than 1.5 and less than 3 free isocyanate groups, wherein an equivalents ratio of free isocyanate groups in the polyisocyanate (B) to hydroxyl groups in the polyester (A) is >1.2. The polyurethane of claim 1, wherein the hydroxyl-terminated polyester has a number-average molecular weight of from 800 to 3000 daltons.3. The polyurethane of claim 1, wherein the hydroxyl-terminated polyester (A) contains, based on (A), from 70 to 92% by weight of structural units (a1) and from 8 to 30% by weight of structural units (a2).4. The polyurethane of claim 1, wherein the weight ratio of structural units (a1) derived from aliphatic dicarboxylic acids and/or dicarboxylic acid derivatives to structural units (a2) derived from aromatic dicarboxylic acids and/or dicarboxylic acid derivatives is from 1.5:1 to 5:1.5. The polyurethane of claim 1, wherein the partially blocked polyisocyanate (B) contains on average per molecule more than 1.9 and less than 2.5 free isocyanate groups.6. The polyurethane of claim 1, wherein the partially blocked polyisocyanate (B) contains at least one of an isocyanurate group, a biuret group, an allophanate group, an iminooxadiazinedione group, a urethane group, a carbodiimide group, a urea group, and a uretdione group.7. The polyurethane of claim 6, wherein the partially blocked polyisocyanate (B) is prepared from diisocyanates.8. The polyurethane of claim 7, wherein the diisocyanates are selected from the group consisting of isophorone diisocyanate, 5-isocyanato-1-(2-isocyanatoeth-1-yl)-1,3,3-trimethylcyclohexane, 5-isocyanato-1-(3-isocyanatoprop-1-yl)-1,3,3-trimethylcyclohexane, 5-isocyanato-(4-isocyanatobut-1-yl)-l ,3,3-tri-methylcyclohexane, 1-isocyanato-2-(3-isocyanatoprop-1-yl)cyclohexane, 1-isocyanato-2-(3-isocyanatoeth-1-yl)cyclohexane, 1-isocyanato-2-(4-isocyanatobut-1-yl)cyclohexane, 1,2-diisocyanatocyclobutane, 1,3-diisocyanatocyclobutane, 1,2-diisocyanatocyclopentane, 1,3-diisocyanatocyclopentane, 1,2-diisocyanatocyclohexane, 1,3-diisocyanatocyclohexane, 1,4-diisocyanatocyclohexane, dicyclohexylmethane 2,4′-diisocyanate, trimethylene diisocyanate, tetramethylene diisocyanate, pentamethylene diisocyanate, hexamethylene diisocyanate, ethylethylene diisocyanate, trimethylhexane diisocyanate, heptamethylene diisocyanate, 2-heptyl-3,4-bis(9-isocyanatononyl)-1-pentylcyclohexane, 1,2-, 1,4-, and 1,3-bis(isocyanatomethyl)cyclohexane, 1,2-, 1,4-, and 1,3-bis(2-isocyanatoeth-1-yl)cyclohexane, 1,3-bis(3-isocyanatoprop-1-yl)cyclohexane, 1,2-, 1,4- or 13-bis(4-isocyanatobuty-1-yl)cyclohexane, liquid bis(4-isocyanatocyclohexyl)methane with a trans/trans content of up to 30% by weight, tolylene diisocyanate, xylylene diisocyanate, bisphenylene diisocyanate, naphthylene diisocyanate, diphenylmethane diisocyanate, and combinations thereof.9. The polyurethane of claim 8, wherein the diisocyanates are selected from the group consisting of hexamethylene diisocyanate, isophorone diisocyanate, bis(4-isocyanatocyclohexyl)methane with a trans/trans content of up to 30% by weight, and combinations thereof.10. The polyurethane of claim 1, wherein the at least one partially blocked polyisocyanate is blocked with a blocking agent selected from the group consisting of(i) phenols; (ii) lactams; (iii) active methylenic compounds; (iv) alcohols; (v) mercaptans; (vi) acid amides; (vii) imides; (viii) amines; (ix) imidazoles; (x) ureas; (xi) carbamates; (xii) imines; (xiii) oximes; (xiv) salts of sulfurous acid; (xv) hydroxamic esters; (xvi) substituted pyrazoles; (xvii) substituted triazoles; and (xviii) combinations thereof. 11. The polyurethane of claim 10, wherein the blocking agents are selected from the group consisting of methanol, ethanol, n-propanol, isopropanol, n-butanol, isobutanol, t-butanol, n-amyl alcohol, t-amyl alcohol, n-hexanol, methyl ethyl ketoxime, and combinations thereof.12. The polyurethane of claim 1, wherein the equivalents ratio of free isocyanate groups in (B) to hydroxyl groups in (A) is >1.2.13. The polyurethane of claim 1, wherein the at least one compound containing on average per molecule at least two isocyanate-reactive functional groups contains per molecule three isocyanate-reactive functional groups.14. The polyurethane of claim 13, wherein the isocyanate-reactive functional groups are selected from the group consisting of hydroxyl groups, thiol groups, primary amino group, secondary amino groups, and combinations thereof.15. The polyurethane of claim 14, wherein the isocyanate-reactive functional groups are selected from hydroxyl groups, secondary amino groups, and combinations thereof.16. The polyurethane of claim 15, wherein the at least one compound containing on average per molecule at least two isocyanate-reactive functional groups is an amino alcohol.17. A process for preparing the polyurethane of claim 1, comprisingI) reacting (A) the at least one hydroxyl-terminated polyester with (B) the at least one partially blocked polyisocyanate, to give the isocyanato-terminated polyurethane prepolymer, and II) chain extending and/or blocking the isocyanato-terminated polyurethane prepolymer with at least one compound containing on average per molecule at least two isocyanate-reactive functional groups. 18. The polyurethane of claim 1, wherein the polyurethane is a binder in one of a coating material, an adhesive, or a sealing compound.19. The polyurethane of claim 18, wherein the coating material is a nonaqueous color and/or effect coating material.20. A method comprising applying the color and/or effect coating material of claim 19 to a substrate and forming a multicoat color and/or effect paint system.21. A method comprising applying the polyurethane of claim 1 to a substrate, wherein the substrate is one of a motor vehicle body, a motor vehicle part, a building, a door, a window, furniture, a hollow glass article, a part, a coil, a container, a packaging, an electrical component, or a white good.22. A nonaqueous color and/or effect coating material comprising(I) at least one self-crosslinking, branched polyurethane of claim 1, (II) at least one color and/or effect pigment, and (III) at least one cellulose ester.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.