Benzophenone-type chemical sun-screening agent-coated polysiloxane composite particle and preparation method thereof

Benzophenone-type chemical sun-screening agent-coated polysiloxane composite particle and preparation method thereof

  • CN 102,488,625 B
  • Filed: 12/26/2011
  • Issued: 02/11/2015
  • Est. Priority Date: 12/26/2011
  • Status: Active Grant
First Claim
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1. the polysiloxane composite particles of chemical sun that formed of coated Benzophenones, is characterized in that preparing by the following method:

  • (1) preparation of the nanoemulsions of the chemical sun that Benzophenones is formed, is comprisedThe described nanoemulsions comprising the chemical sun that Benzophenones is formed is calculated by mass percentage, its raw material composition and content as follows;

    Sunscreen 0.1 ~ 10%Emulsifying agent 0.1 ~ 20%Oils and fats 0.1 ~ 10%Help Emulsion 0.1 ~ 20%Surplus is water;

    The chemical sun that described sunscreen is formed for Benzophenones;

    The chemical sun that described Benzophenones is formed is benzophenone-1, one or more mixture formed in benzophenone-2, OXYBENZONE, UVNUL MS-40, benzophenone-5, benzophenone-6 and Benzophenone-9;

    The above-mentioned nanoemulsions preparation process comprising the chemical sun that Benzophenones is formed is as follows;

    First chemical sun Benzophenones formed, emulsifying agent, oils and fats and help being uniformly mixed of Emulsion, then while homogenizing water, the chemical sun that Benzophenones is formed, emulsifying agent, oils and fats and help the mixture being uniformly mixed gained of Emulsion to be added to the water, continue homogenizing, it is 10000 ~ 50000r/min that homogenizing process controls homogenizing speed, time is 0.1 ~ 30min, after homogenizing, stirring is cooled to room temperature and namely obtains the nanoemulsions comprising the chemical sun that Benzophenones is formed, it is 10 ~ 1000r/min that above-mentioned whipping process controls mixing speed,Described emulsifying agent is anion surfactant or non-ionic surface active agent;

    Wherein said anion surfactant is fatty alcohol sulfate salt, and its molecular formula is C nh 2n+1sO 4m, wherein n is 11 ~ 17, M is Na, K or NH 3;

    Described non-ionic surface active agent is four polyglycereol monostearates, four polyglycereol five stearates, four polyglycerol monooleate, four polyglycereol five oleates, four polyglycereol monolaurates, six polyglycereol monostearates, six polyglycereol five stearates, six polyglycerol monooleate, six polyglycereol five oleates, six polyglycereol monolaurates, eight polyglycereol monostearates, eight polyglycereol eight stearates, eight polyglycerol monooleate, eight polyglycereol monolaurates, ten polyglycereol monostearates, ten polyglycereol five stearates, ten polyglycerol monooleate or ten polyglycereol monolaurates,Described oils and fats be mineral grease, natural origin Vegetable oil lipoprotein, natural origin animal oil and synthetic ester oil one or more rich mixture,Described mineral grease is white oil, ceresine or microwax;

    Described natural origin Vegetable oil lipoprotein is olive oil, palm-kernel oil, American Avocado Tree oil, soybean oil, Testa oryzae oil, Apricot kernel oil, Oleum helianthi, Camellia oil, cocoa butter, mother-in-law sieve'"'"'s fat, mowrah fat, Adeps Bovis seu Bubali resin, Brazil wax or aromatic wax;

    Described natural origin animal oil is Adeps Serpentis, horse fat or spermaceti;

    Described synthetic ester oil is methyl polysiloxane, methyl phenyl silicone, Methyl Hydrogen Polysiloxane Fluid, polyether modified silicon oil, long chain alkyl modified silicon oil, cyclic polysiloxanes, amino-modified silicone oil, Carboxyl Modified Polydimethylsiloxane, methyl polysiloxane emulsion, Organosilicon wax or silicones;

    Described co-emulsifier is monohydric alcohol or polyhydric alcohol, and wherein the molecular formula of monohydric alcohol is C nh 2n+1oH, wherein n is between 1 ~ 12;

    Polyhydric alcohol is ethylene glycol, 1,2-PD, 1,3-PD, 1, one or more mixed alcohols formed in 3 butanediols, propylene carbonate and glycerol;

    (2), the preparation of organic silicon monomer hydrolysising product solutionOrganosilicon is added in the mixture of water and/or organic solvent, then under acid or alkali effect, control pH be 1 ~ 6 or pH 7.5 ~ 11.5 to be hydrolyzed reaction, hydrolysis time was at 0.1 ~ 10 hour, temperature 1 ~ 100 DEG C, mixing speed 10 ~ 1000r/min, obtains organic silicon monomer hydrolysising product solution after having reacted;

    Described organosilyl addition calculates i.e. organosilicon in mass ratio;

    the mixture of water and/or organic solvent is 1 ~ 50;

    100;

    Described organosilicon is organosiloxane, and its structural formula is R 1nSiX (4-n);

    Wherein R 1that representative is selected from replacement or the unsubstituted univalent perssad having a C atom to be connected directly between alkyl on Si atom or alkenylphenyl, n is the integer of 0 ~ 3, X is hydrolysising group, is hydroxyl, hydrogen, alkoxyl, halogen group, carboxyl, amino or siloxy;

    As n >

    1, each R1 group can be identical or different;

    And as (4-n) >

    1, each X group can be identical or different;

    Said organic solvent is methanol, ethanol, ethylene glycol, propanol, isopropyl alcohol, butanols, isobutanol, propylene carbonate, glycerol, Methanamide, N, the mixture of one or more compositions in N-dimethyl acetylamide, DMF, acetone, oxolane, dimethylsulfone, ethyl acetate, pyridine and acetonitrile;

    (3) preparation of the suspension of the polysiloxane composite particles of the chemical sun, formed containing coated BenzophenonesThe organic silicon monomer hydrating solution obtain step (2) and the nanoemulsions comprising the chemical sun that Benzophenones is formed of step (1) gained calculate in mass ratio, the i.e. nanoemulsions of chemical sun that formed of Benzophenones;

    organic silicon monomer hydrolysising product solution is that 0.1;

    99.9 ~ 50;

    50 mixes, then the suspension of the polysiloxane composite particles of the chemical sun formed containing coated Benzophenones is obtained after carrying out polycondensation reaction under regulating with alkaline matter the condition that pH is 7.5 ~ 13.5, it is 0 DEG C ~ 100 DEG C that polycondensation process controls reaction temperature, rotating speed is 10 ~ 1000r/min, time is 0.1 ~ 24h,The suspension water, the ethanol circulation cleaning that contain the polysiloxane composite particles of the chemical sun that coated Benzophenones is formed that to obtain after polycondensation reaction completes, and centrifugal, filtration, by dry at 100 ~ 200 DEG C for the filter cake obtained, the solids finally obtained are the polysiloxane composite particles of the chemical sun that coated Benzophenones is formed.

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