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公开(公告)号:JPH07207287A
公开(公告)日:1995-08-08
申请号:JP31351594
申请日:1994-12-16
申请人: CHEVRON CHEM CO
IPC分类号: C07C69/732 , C07C69/734 , C07C229/22 , C07C229/38 , C08F8/32 , C08G14/00 , C08G14/14 , C10L1/14 , C10L1/16 , C10L1/18 , C10L1/19 , C10L1/22 , C10L1/2383 , C10L1/2387 , C10L1/24 , C10L1/30
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公开(公告)号:JPH0684414B2
公开(公告)日:1994-10-26
申请号:JP7723885
申请日:1985-04-11
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公开(公告)号:JPH0662760B2
公开(公告)日:1994-08-17
申请号:JP50350690
申请日:1990-01-04
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公开(公告)号:JPH0625370A
公开(公告)日:1994-02-01
申请号:JP24259492
申请日:1992-08-20
申请人: SHINETSU CHEMICAL CO
发明人: SHIOBARA TOSHIO , NARUMI MANABU , SHIMIZU HISASHI
摘要: PURPOSE:To obtain the subject new resin useful as a resin component for sealing a semiconductor device, providing a cured material having extremely low water absorption and low elasticity by adding a specific organosilicon compound to an alkenyl group of an aralkyl resin containing an alkenyl group. CONSTITUTION:Three Si groups of an organosilicon compound of formula I (R is monofunctional hydrocarbon, OH, etc.; (a) and (b) are integers satisfying 0.01
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公开(公告)号:JPH03187960A
公开(公告)日:1991-08-15
申请号:JP21943590
申请日:1990-08-21
发明人: KAWAMURA MASANOBU , HAMADA SHINJI , DATE TAKASHI
IPC分类号: C04B24/22 , C04B24/30 , C08G14/00 , C08G14/06 , C08G14/073
摘要: PURPOSE:To improve the flowability of a cement composition in a state reduced in the ageing change of the flowability by employing a bisphenol compound as a phenol compound in a small amount in a reducing agent containing an aromatic aminosulfonic acid.the phenol.formaldehyde condensate. CONSTITUTION:The water-reducing agent for cement contains as a main component the formaldehyde condensate of 4-aminobenzene sulfonic acid or a salt thereof and a bisphenol compound or salt thereof. The remained monomer (the aromatic aminosulfonic acid) in the aromatic aminosulfonic acid mixing agent is reduced, and polar groups and a steric property are imparted to the hydrophobic skeleton, thereby permitting to improve the flowability of the cement composition without deteriorating the flowability ageing reduction- preventing effect thereof. The bisphenol compound includes bisphenols A, S and F.
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