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ApplicationNo./PatentNo.: 2007 10 152279
The invention discloses a waterproof and impermeable essence, which mainly comprises polyvinyl alcohol18.1-19.35%, formaldehyde 3.72-3.90% and hydrochloric acid 1.57- 1.77%. The production process is as follows: polyvinyl alcohol is dissolved in water in proportion, formaldehyde and hydrochloric acid are added and stirred evenly, and finally ammonium cyanamide and expansion agent are added and mixed evenly. The invention has the advantages of long service life, low cost and easy construction, and is a non-toxic, odorless, non-volatile, non-combustible, environment-friendly and pollution-free liquid. After use, it can effectively prevent water, seepage, moisture and mildew, and prevent peeling on walls and other surfaces caused by saline-alkali precipitation.
Date of application: September 2, 20071.
Open day: 2065438+00 on April 28th.
Date of authorization announcement:
Applicant/patentee: Li Shumin.
Applicant's address: Central Quanxi Village, Dongzhen Town, Lincheng County, Hebei Province
Inventor: Li Shumin
Patent agency:
Agent:
Patent type: invention patent
Classification number: C09K3/18; c08l 29/04； c08k 5/3492； c08k 5/07； C08K3/00