- Synthesis method and application of epoxy resin low-curing-shrinkage-rate expansion monomer
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The invention discloses a synthesis method and application of an epoxy resin low-curing-shrinkage-rate expansion monomer. The synthesis method comprises the following steps: 1, synthesizing 3-cyclohexyl-1, 1-dimethanol, 2, carrying out transesterification on the 3-cyclohexyl-1, 1-dimethanol to synthesize normal orthocarbonate, and 3, carrying out an epoxidation reaction process on the normal orthocarbonate to synthesize the spiro-orthocarbonate expansion monomer containing the epoxy group. When the spiro-orthocarbonate expansion monomer containing the epoxy group is used for a curing reactionof an epoxy resin, the curing shrinkage rate of the epoxy resin can be effectively reduced.
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Paragraph 0019-0021
(2020/05/02)
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- 4,4-BIS[(ETHENYLOXY)METHYL]CYCLOHEXENE AND METHOD FOR PRODUCING SAME
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A novel substance, 4,4-bis[(ethenyloxy)methyl]cyclohexene having the formula (I), which is low in odor, low in volatility, and low in skin irritability, and therefore, can be used as, for example, a starting material for inks and a starting material for electronic materials, and a method for producing the same are provided:
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Paragraph 0020; 0021; 0022; 0023; 0024
(2014/03/24)
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- Synthesis of 4,4-disubstituted 2-aminocyclopentanecarboxylic acid derivatives and their incorporation into 12-helical β-peptides
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(Chemical equation presented) An enantioselective synthetic route is reported for trans-2-aminocyclopentanecarboxylic acids (ACPC) bearing geminal side chain pairs at the 4-position. β-Peptides containing the 4,4-disubstituted ACPC residues adopt the 12-helical conformation, as demonstrated by 2D NMR analysis in aqueous solution. These 4,4-disubstituted ACPC residues display functional groups, including acidic and hydrogen bond donating groups, in a geometrically defined fashion, which should be useful for the design of β-peptides for specific applications.
- Peelen, Timothy J.,Chi, Yonggui,English, Emily Payne,Gellman, Samuel H.
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p. 4411 - 4414
(2007/10/03)
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- Organotin-containing composition for the stabilization of polymers of vinyl chloride
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An organotin-containing composition for the stabilization of polymers or copolymers of vinyl chloride in which there is incorporated a stabilizing amount of an organotin compound containing at least two tin atoms and which is a mercapto, hydroxy or alkoxy substituted ester of a mercapto acid substituted organotin mercapto acid diester.
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