摘要:
The present technology relates to methods and compositions for preparing all water blown spray polyurethane foams by reacting an aromatic polymeric polyisocyanate with a polyol blend. The polyol methods and compositions of the present technology comprises a polyol component, water, a cell opening agent, and a non-reactive diluent. Polyurethane foams prepared according to the present technology meet the physical and processing requirements stipulated by the industry.
摘要:
The present invention provides a ring-containing component polyol and process for making the same for use as a load-bearing capacity improvement agent in flexible polyurethane foam manufacture. The ring-containing component polyol eliminates and/or reduces the need for a copolymer polyol containing suspended solids in the manufacture of flexible foam products. This may reduce production costs, reactivity variations, filter plugging, color variations, foam shrinkage/tightness, foam irregularity, and foam malodor while maintaining an adequate load-bearing capacity. The present polyol blends can be non-opaque or transparent.
摘要:
Disclosed are methods and compositions for preparing polyurethane foams using emulsified polyol mixture comprising (a) a polyol formulation comprising a polyester polyol having an OH value of from about 150 to 350; and (b) a cell opening agent.
摘要:
Disclosed are polyester-ether polyols and their use in foams, in particular rigid or flexible foams. Methods for producing such polyester-ether polyols using potassium hydroxide or double metal cyanide catalysts are disclosed, along with methods for producing urethane prepolymers. The polyester-ether polyols of the instant invention are preferably the reaction product of phthalic anhydride, diethylene glycol, and propylene oxide. These polyester-ether polyols are useful as either the primary polyol in urethane compositions or in combination with conventional auxiliary polyester- and/or polyether-based polyols. The polyester-ether polyols impart greatly improved solubility and compatibility to mixtures of either polyether and/or polyester polyols. The polyester-ether polyols of the instant invention are desirably of lower viscosity than their precursor intermediate polyester polyols and are generally soluble in either polyester- and/or polyether-based polyols.
摘要:
Disclosed are methods and compositions for preparing polyurethane foams using emulsified polyol mixture comprising: (a) a polyol formulation comprising a polyester polyol having an OH value of from about 150 to 350; and (b) a cell opening agent.
摘要:
Disclosed are methods and compositions for preparing rigid foams by contacting a polyisocyanate with a polyol mixture comprising(a) from about 40-95% by weight of a polyester or polyether polyol;(b) a catalytic amount of a catalyst system comprising a primary catalyst and an amino acid salt catalyst derived from sarcosine; and(c) a non-chlorofluorocarbon blowing agent.
摘要:
The invention relates to methods and compositions for preparing all water blown spray polyurethane foams by reacting a polyisocyanate with a polyol blend. The polyol methods and compositions of the invention comprises a polyol component, water, a cell opening agent, and a diluent. Polyurethane foams prepared according to the invention meet the physical and processing requirements stipulated by the industry.
摘要:
Disclosed are methods and compositions for preparing rigid foams by contacting a polyisocyanate with a polyol mixture comprising(a) from about 40-95% by weight of a polyester or polyether polyol;(b) a catalytic amount of a catalyst system comprising a primary catalyst and an amino acid salt catalyst derived from sarcosine; and(c) a non-chlorofluorocarbon blowing agent.
摘要:
The invention relates to methods and compositions for preparing all water blown spray polyurethane foams by reacting a polyisocyanate with a polyol blend. The polyol methods and compositions of the invention comprises a polyol component, water, a cell opening agent and a diluent. Polyurethane foams prepared according to the invention meet the physical and processing requirements stipulated by the industry.
摘要:
Disclosed are methods and compositions for preparing rigid foams by contacting a polyisocyanate with a polyol mixture comprising(a) from about 40-95% by weight of a polyester or polyether polyol;(b) a catalytic amount of a catalyst system comprising a primary catalyst and an amino acid salt catalyst derived from sarcosine; and(c) a non-chlorofluorocarbon blowing agent.