IPC분류정보
국가/구분 |
United States(US) Patent
등록
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국제특허분류(IPC7판) |
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출원번호 |
US-0588598
(1984-03-12)
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발명자
/ 주소 |
- Chung Daniel A. (North Canton OH)
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출원인 / 주소 |
- Goodyear Aerospace Corporation (Akron OH 02)
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인용정보 |
피인용 횟수 :
10 인용 특허 :
2 |
초록
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A polyester polyurethane compound is formed by reacting trans-1,4-cyclohexanediisocyanate with a mixed polyester. The mixed polyester can be the copolymerization condensation product of an aliphatic dicarboxylic acid or an aromatic dicarboxylic acid, or a separate physical blend thereof reacted with
A polyester polyurethane compound is formed by reacting trans-1,4-cyclohexanediisocyanate with a mixed polyester. The mixed polyester can be the copolymerization condensation product of an aliphatic dicarboxylic acid or an aromatic dicarboxylic acid, or a separate physical blend thereof reacted with a polyol. The polyurethane can also contain small amounts of non-extractable epoxies and carbodiimides. The urethane has very good hydrolytic stability in comparison with prior art polyurethane systems and also very good fuel resistance and anti-icing resistance. A preferred area of use is an aircraft fuel tanks and anti-icing components.
대표청구항
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A polyester polyurethane, comprising: the reaction product of one or more 1 to 8 carbon atom alkyl substituted trans-1,4-cyclohexanediisocyanate or trans-1,4-cyclohexanediisocyanate and a mixed polyester, said mixed polyester being (a) a copolymerization condensation product of a glycol with at leas
A polyester polyurethane, comprising: the reaction product of one or more 1 to 8 carbon atom alkyl substituted trans-1,4-cyclohexanediisocyanate or trans-1,4-cyclohexanediisocyanate and a mixed polyester, said mixed polyester being (a) a copolymerization condensation product of a glycol with at least two dicarboxylic acids selected from the group consisting of an aliphatic dicarboxylic acid, a cycloaliphatic dicarboxylic acid, and an aromatic dicarboxylic acid, or, (b) a blend of at least two polyesters selected from the group consisting of an aliphatic polyester, a cycloaliphatic polyester, and an aromatic polyester, said aliphatic polyester made from the reaction of an aliphatic dicarboxylic acid and a glycol, a cycloaliphatic polyester made from the reaction of a cycloaliphatic dicarboxylic and a glycol, said aromatic polyester made from the reaction of an aromatic dicarboxylic acid and a glycol, said aliphatic dicarboxylic acid having from 2 to 12 carbon atoms, said cycloaliphatic dicarboxylic acid having from 7 to 15 carbon atoms, said aromatic dicarboxylic acid having from 8 to 12 carbon atoms, said polyol having a molecular weight of 500 or less, the amount of said aliphatic dicarboxylic acid and said cycloaliphatic aliphatic acid based upon the total amount of said dicarboxylic acids ranging from about 90 percent to about 10 percent by weight, the molecular weight of said polyester made from said dicarboxylic acids and said polyol ranging from about 500 to about 4,000 and wherein the equivalent ratio of said isocyanate to the OH end groups in said polyester ranges from about 1.5 to about 3.0. A process for making a polyester polyurethane material, comprising the steps of: reacting trans-1,4-cyclohexanediisocyanate or one or more 1 to 8 carbon atoms alkly substituted trans-1,4-cyclohexanediisocyanate with a mixed polyester, said mixed polyester being (a) a copolymerization condensation product of a glycol with at least two dicarboxylic acids selected from the group consisting of an aliphatic dicarboxylic acid, a cycloaliphatic dicarboxylic acid, and an aromatic dicarboxylic acid, or, (b) a blend of at least two polyesters selected from the group consisting of an aliphatic polyester, a cycloaliphatic polyester, and an aromatic polyester, said aliphatic polyester made from the reaction of an aliphatic dicarboxylic acid and a glycol, said cycloaliphatic polyester made from the reaction of an cycloaliphatic dicarboxylic acid and a glycol, said aromatic polyester made from the reaction of an aromatic dicarboxylic acid and a glycol, said aliphatic dicarboxylic acid having from 2 to 12 carbon atoms, said cycloaliphatic dicarboxylic acid having from 7 to 15 carbon atoms, said aromatic dicarboxylic acid having from 8 to 12 carbon atoms, said polyol having a molecular weight of 500 or less, the amount of said aliphatic dicarboxylic acid and said cycloaliphatic dicarboxylic acid based upon the total amount of said dicarboxylic acids ranging from about 90 percent to about 10 percent by weight, the molecular weight of said polyester made from said dicarboxylic acids and said polyol ranging from about 500 to about 4,000, and wherein the equivalent ratio of said polyisocyanate to said OH end groups in said polyester ranges from about 1.5 to about 3.0.
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