发明授权
- 专利标题: Aqueous dispersions of polyamides
- 专利标题(中): 聚酰胺的水分散体
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申请号: US852967申请日: 1997-05-08
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公开(公告)号: US5948880A公开(公告)日: 1999-09-07
- 发明人: Stephen A. Fischer , Chase J. Boudreaux , Michael S. Wiggins
- 申请人: Stephen A. Fischer , Chase J. Boudreaux , Michael S. Wiggins
- 申请人地址: PA Gulph Mills
- 专利权人: Henkel Corporation
- 当前专利权人: Henkel Corporation
- 当前专利权人地址: PA Gulph Mills
- 主分类号: C08J3/02
- IPC分类号: C08J3/02 ; C08G69/34 ; C08J3/03 ; C08J3/07 ; C08K5/05 ; C08K5/42 ; C08K5/521 ; C08L75/04 ; C08L77/08 ; C08L79/08 ; C09D177/00 ; C09J177/00 ; C09J177/08
摘要:
A process is provided for preparing a dispersion of a polyamide in water, said process comprising:forming a solution of a polyamide having an acid value of greater than about 2 in an organic solvent to form a solution of said polyamide in said solvent, said polyamide and said solvent being at a temperature below the softening point of said polyamide during said dissolving, said solution further comprising a surfactant, wherein at least a portion of the acid value of said polyamide is neutralized,adding sufficient water to said solution with mixing to form an oil-in-water dispersion, the temperature of said solution and said water being below the softening point of said polyamide during said adding, andremoving at least a major amount of said organic solvent from said oil-in-water dispersion. The resulting dispersion is useful in preparing a coating of the polyamide, which coating is useful as an adhesive.
公开/授权文献
- US5168278A Antenna device for electronic devices 公开/授权日:1992-12-01
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