A kind of hot melt adhesive for non-pressure sensitive ointment and preparation method thereof
A hot-melt adhesive, pressure-sensitive technology, used in adhesives, heat-activated films/sheets, film/sheet-like adhesives, etc. Insufficient convenience and other problems, to achieve the effect of high drug loading and wide application prospects
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Embodiment 1
[0063] Example 1 provides a hot-melt adhesive for non-pressure-sensitive ointment, characterized in that, in parts by weight, its preparation raw materials include: 30 parts of thermoplastic elastomers, 18 parts of resins with a softening point of not lower than 90°C , 15 parts of lubricant, 1.5 parts of antioxidant, 10 parts of metal oxide;
[0064] The thermoplastic elastomer is a mixture of SBS and SIS; the styrene content of the SBS is 40 wt%, and the styrene content of the SIS is 30 wt%; the mass ratio of the SBS and SIS is 1:3.
[0065] The resin whose softening point is not lower than 90°C is a mixture of petroleum resin and rosin resin; the weight ratio of the petroleum resin and rosin resin is 1:1; the petroleum resin is C5 resin, and the rosin resin is pentaerythritol rosin resin.
[0066] The lubricant is polyethylene wax.
[0067] The antioxidant is antioxidant 1010.
[0068] The metal oxide is zinc oxide.
[0069] This example also provides a method for prepar...
Embodiment 2
[0071] Example 2 provides a hot-melt adhesive for non-pressure-sensitive ointment, characterized in that, in parts by weight, its preparation raw materials include: 25 parts of thermoplastic elastomers, 15 parts of resins with a softening point of not lower than 90°C , 10 parts of lubricant, 1 part of antioxidant, 8 parts of metal oxide;
[0072] The thermoplastic elastomer is a mixture of SBS and SIS; the styrene content of the SBS is 40 wt%, and the styrene content of the SIS is 30 wt%; the mass ratio of the SBS and SIS is 1:3.
[0073] The resin whose softening point is not lower than 90°C is a mixture of petroleum resin and rosin resin; the weight ratio of the petroleum resin and rosin resin is 1:1; the petroleum resin is C5 resin, and the rosin resin is pentaerythritol rosin resin.
[0074] The lubricant is polyethylene wax.
[0075] The antioxidant is antioxidant 1010.
[0076] The metal oxide is zinc oxide.
[0077] This example also provides a method for preparing ...
Embodiment 3
[0079] Example 3 provides a hot-melt adhesive for non-pressure-sensitive ointment, characterized in that, in parts by weight, its preparation raw materials include: 35 parts of thermoplastic elastomer, 25 parts of resin with a softening point of not lower than 90°C , 20 parts of lubricant, 2 parts of antioxidant, 12 parts of metal oxide;
[0080] The thermoplastic elastomer is a mixture of SBS and SIS; the styrene content of the SBS is 40 wt%, and the styrene content of the SIS is 30 wt%; the mass ratio of the SBS and SIS is 1:3.
[0081] The resin whose softening point is not lower than 90°C is a mixture of petroleum resin and rosin resin; the weight ratio of the petroleum resin and rosin resin is 1:1; the petroleum resin is C5 resin, and the rosin resin is pentaerythritol rosin resin.
[0082] The lubricant is polyethylene wax.
[0083] The antioxidant is antioxidant 1010.
[0084] The metal oxide is zinc oxide.
[0085] This example also provides a method for preparing ...
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Abstract
Description
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Application Information
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