[미국특허]
Chemically hardening two-component materials based on polyurethanes, method of production and use
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C08G-018/44
C08G-018/48
C08G-018/42
C08G-018/62
출원번호
US-0681494
(1984-12-13)
우선권정보
DE-3407031 (1984-02-27)
발명자
/ 주소
Schnbchler Max (Wollerau CHX) Saur Wolfgang (Mnnedorf CHX)
출원인 / 주소
Gurit-Essex AG (Freienbach CHX 03)
인용정보
피인용 횟수 :
23인용 특허 :
1
초록▼
A chemically-hardening two-component material based on polyurethane is provided, having a first component being a prepolymer with isocyanate end groups and a second component being a product which has been obtained from that prepolymer with isocyanate end groups by reacting it with a reactive compou
A chemically-hardening two-component material based on polyurethane is provided, having a first component being a prepolymer with isocyanate end groups and a second component being a product which has been obtained from that prepolymer with isocyanate end groups by reacting it with a reactive compound which has at least two active groups, containing active hydrogen and which do not react identically with isocyanate. The prepolymer is a reaction product of an aliphatic or aromatic di-isocyanate with a polyol. Such a material can be produced by reacting a prepolymer which contains isocyanate end groups, with a second component, which, in turn, has resulted from a prepolymer with isocyanate end groups by reacting with a reactive compound which has at least two molecule groups, containing hydrogen and reacting differently with isocyanate. The material is especially suitable as a self-hardening gluing, coating, sealing and molding material.
대표청구항▼
A chemically hardening two-component material, based on a reactive mixture of polyurethanes, comprising (i) a first component which is a prepolymer with isocyanate end groups and (ii) a second component which is a reaction product of said or another prepolymer with isocyanate end groups and a compou
A chemically hardening two-component material, based on a reactive mixture of polyurethanes, comprising (i) a first component which is a prepolymer with isocyanate end groups and (ii) a second component which is a reaction product of said or another prepolymer with isocyanate end groups and a compound containing at least two active hydrogens said compound selected from the group consisting of a mercapto alcohol, an amino alcohol, a hydroxy-, thio- or amino-carboxylic acid, wherein the prepolymers of the first and the second component are reaction products of at least one aliphatic or aromatic di-isocyanate monomer or polyisocyanate with less than the equivalent amount of at least one polyol, said polyol being selected from the group consisting of polyether, polythioether, polyester, polycaprolactone, polycaprolactam, polycarbonate, polyacrylate, polyurethane and hydrocarbon polymers with at least two hydroxyl functions in the molecule in each case, so that the equivalent ratio NCO:H (active) of the two components is in the range from 0.8:1 to 5:1. A process for producing a hardenable material based on polyurethanes, comprising the steps of: providing a first component which is a prepolymer with isocyanate end groups; providing a second component which is a reaction product of a prepolymer with isocyanate end groups and a reactive compound containing at least two active hydrogens said compound selected from the group consisting of a mercapto alcohol, an amino alcohol, a hydroxy-, thio- or amino- carboxylic acid; said prepolymer being a reaction product of at least one aliphatic or aromatic di-isocyanate monomer or poly-isocyanate with less than the equivalent amount of at least one polyol; said polyol being selected from the group consisting of polyether, polythioether, polyester, polycaprolactone, polycaprolactam, polycarbonate, polyacrylate, polyurethane and hydrocarbon polymers with at least two hydroxyl functions in the molecule in each case; and reacting said first component with said second component, so that the equivalent ratio NCO:H (active) of the two components is in the range from 0.8:1 to 5:1.
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