摘要:
An agent and method for modifying a surface layer of hardened cement structures or substrates with use of the agent which comprises in a specified ratio of alkali silicate solution and a sodium naphthalenesulfonate formaldehyde condensate. Said agent has an excellent stability and a remarkable permeability into the cement structure to form a deeper strengthened surface layer thereon.
摘要:
A composition which is an aqueous solution including (i) an alkyltrialkoxysilane with C₁ to C₆ alkyl groups on silicon; (ii) a silane coupling agent, (iii) an amino resin and (iv) a quaternary ammonium silane. The composition is used to render surfaces water repellent.
摘要:
A method for the production of improved bonded particulate articles, and the articles so produced, are disclosed. Specifically, the manufacture of particulate articles having a reduced tendency to undergo humidity-induced sag is disclosed. These articles have utility in such application as ceiling tiles.
摘要:
An agent and method for modifying a surface layer of hardened cement structures or substrates with use of the agent which comprises in a specified ratio of alkali silicate solution and a sodium naphthalenesulfonate formaldehyde condensate. Said agent has an excellent stability and a remarkable permeability into the cement structure to form a deeper strengthened surface layer thereon.
摘要:
A composition which is an aqueous solution including (i) an alkyltrialkoxysilane with C₁ to C₆ alkyl groups on silicon; (ii) a silane coupling agent, (iii) an amino resin and (iv) a quaternary ammonium silane. The composition is used to render surfaces water repellent.
摘要:
A method for the production of improved bonded particulate articles, and the articles so produced, are disclosed. Specifically, the manufacture of particulate articles having a reduced tendency to undergo humidity-induced sag is disclosed. These articles have utility in such application as ceiling tiles.