再颁专利
- 专利标题: Thixotropic adhesive gel
- 专利标题(中): 触变胶粘剂
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申请号: US290636申请日: 1994-08-15
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公开(公告)号: USRE35144E公开(公告)日: 1996-01-09
- 发明人: Peter S. Columbus , John Anderson , Yogeshbhai B. Patel
- 申请人: Peter S. Columbus , John Anderson , Yogeshbhai B. Patel
- 申请人地址: OH Columbus
- 专利权人: Borden, Inc.
- 当前专利权人: Borden, Inc.
- 当前专利权人地址: OH Columbus
- 主分类号: C08F2/16
- IPC分类号: C08F2/16 ; C08K3/20 ; C08L9/04 ; C09J129/04
摘要:
A water based thixotropic adhesive gel is disclosed which consists essentially of: water; partially hydrolyzed polyvinyl alcohol, or wherein a portion of the polyvinyl alcohol is replaced with polyvinylpyrrolidone; a water-soluble high viscosity thickening agent polymer which is compatible with the polyvinyl alcohol and which imparts thixotropic properties to the gel; a water-soluble plasticizer for the polyvinyl alcohol; and a watersoluble defoamer in proportion of ingredients so that the viscosity of the adhesive will break down when a flexible tube or squeeze bottle dispenser is finger-pressed and have a sufficiently low viscosity to allow for easy extrusion from an orifice having a diameter of about 0.06 to 0.12 inches. When pressure is released, after the desired amount of adhesive has flown out of the dispenser, the adhesive quickly reverts to very close to its original gel state so that it will not run on a vertical surface on porous and semiporous surfaces such as paper. An article of manufacture is also provided whereby the adhesive gel containing the above ingredients is in a flexible dispenser from which the adhesive can be dispensed by finger-pressure.
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