PVP-VA 共聚系列
化学名称：乙烯基吡咯烷酮及乙酸乙烯酯共聚物
CTFA名称：PVP/VA COPOLYMER
CAS 号：25086-89-9
分子式: （C6H9NO）n X (C4H6O)m (n=2m)
性质：可以提供不同比例的乙烯基吡咯烷酮以及乙酸乙烯酯的粉剂、乙醇溶液，2-丙醇溶液及水溶液。PVP/VA 系列产品在水中形成的溶液由清液至浊液不等，浑浊的程度视乙烯基吡咯烷酮及乙酸乙烯酯的分量而定。该等溶液有轻微的酸性反应但无电解性。
规格：
|
牌号
|
VP/VA
|
K值
|
残单%
|
水分%
|
固体含量%
|
|
VA73E
|
70/30
|
30-38
|
<0.2
|
<0.5
|
48-52
|
|
VA64E
|
60/40
|
30-36
|
<0.2
|
<0.5
|
48-52
|
|
VA64粉
|
60/40
|
26-34
|
<0.2
|
<0.5
|
>95
|
|
VA55E
|
50/50
|
28-36
|
<0.2
|
<0.5
|
48-52
|
|
VA37E
|
30/70
|
28-36
|
<0.2
|
<0.5
|
48-52
|
应用：
化妆品工业：
PVPP/VA 系列起着硬挺剂和成膜剂的作用。 醋酸乙烯酯比例较高的规格，吸湿性较低，极适合于摩丝、喷发剂和定发液。若与PVP-K30一起混合使用时，可增强定发的效果。
其他工业用途
可用于再湿型粘结剂，纸张用胶黏剂。
可作为各种油墨的增稠剂及保护性胶体。
水溶性PVP/VA64系列产品也是植保剂常用的乳化剂及保护性胶体。
可作涂料的粘合剂。
PVP-VA copolymer series
Chemical Name: Copolymer of vinylpyrrolidone with vinyl acetate
CTFA Nomenclature: PVP/VA copolymer
CAS No.:25086-89-9
Molecular Formula: （C6H9NO）n X (C4H6O)m (n=2m)
Properties:
Different proportion of vinylpyrrolidone with vinyl acetate can be supplied in the shape of powder, alcohol solution,2-propyl alcohol solution or aqueous solution. The aqueous products could be cloudy. The clarity of the solution depends on the proportion of vinylpyrrolidone with vinyl acetate. The solution is slight acidic but not electrolytic.
Specification:
|
Items
|
VP/VA(w/w)
|
K value
|
Vinylpyrrolidone %
|
Moisture %
|
Solid %
|
|
VA73E
|
70/30
|
30-38
|
<0.2
|
<0.5
|
48-52
|
|
VA64E
|
60/40
|
30-36
|
<0.2
|
<0.5
|
48-52
|
|
VA64 powder
|
60/40
|
26-34
|
<0.2
|
<0.5
|
>95
|
|
VA55E
|
50/50
|
28-36
|
<0.2
|
<0.5
|
48-52
|
|
VA37E
|
30/70
|
28-36
|
<0.2
|
<0.5
|
48-52
|
Applications:
Cosmetics: PVP/VA series play a good role as stiffening agent and film-forming agent. Its hygroscopic capacity decreases with the increase of the proportion of vinyl acetate in the molecular, which is extremely useful for PVP/VA to be used in hair spray, mousse and hair-set lotion. If PVP/VA is mixed with pvpk30, the effect would be better.
Other Utilities:
Remoistened adhesive and other adhesives for paper.
Viscosity-enhancing agent and protecting colloid for printing ink.
Water-soluble PVP/VA 64 series, can act as emulsifying agent and protecting colloid for plant–protecting agent..
Binder in coating
