Silicone resin-containing emulsion composition, method for making same, and article having a cured film of same
AssigneeShin-Etsu Chemical Co., Ltd.
InventorsMasaaki Yamaya, Hiroaki Kizaki, Masahiro Furuya, Akira Yamamoto
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Abstract
A silicone resin-containing emulsion composition is prepared by emulsion polymerizing a solution containing a water-insoluble silanol group-bearing silicone resin and a radical polymerizable vinyl monomer and substantially free of an organic solvent. The emulsion may further contain a film-forming assistant having a boiling point of at least 100.degree. C. and soluble or uniformly dispersible in water. The emulsion can be coated and cured into a film having mar resistance, weather resistance, and chemical resistance.
Claims41
A method for preparing a silicone resin-containing emulsion composition comprising emulsion polymerizing a solution containing
- (1) 100 parts by weight of a water-insoluble silanol grouwbearing silicone resin of the following average compositional formula (1):
- R.sup.1.sub.m R.sup.2.sub.n Si(OH).sub.p (OX).sub.q O.sub.(4-m-n-p-q)/2( 1)
- wherein R.sup.1 is an unsubstituted monovalent hydrocarbon group, R.sup.2 is a monovalent hydrocarbon group substituted by (i) a halogen atom, (ii) an epoxy functional group, (iii) a (meth)acryl functional group, (iv) an amino functional group, (V) a sulfur-containing functional group, (vi) an alkyl ether functional group, (vii) a (polyoxyalkylene)alkyl ether group, (viii) a carboxyl, sulfonyl or other anionic group or (ix) a quaternary ammonium salt structure-containing group, OX is a hydrolyzable group where X is a monovalent hydrocarbon group, letters m, n, p and q are numbers satisfying 0.5.ltoreq.m.ltoreq.1.8, 0.ltoreq.n.ltoreq.1.0, 0<p.ltoreq.1.5,0.ltoreq.q.ltoreq.0.5, 0.5.ltoreq.m+n.ltoreq.1.8, and 0<p+q.ltoreq.1.5, and
- (2) 10 to 1,000 parts by weight of a radical polymerizable vinyl monomer as main components,
- said solution being substantially free of an organic solvent having a boiling point of less than 100.degree. C., an organic solvent which is insoluble or not uniformly dispersed in water, and an aromatic organic solvent.
A silicone resin-containing emulsion composition comprising
- (A) an emulsion polymerized product obtained from a solution containing (1) 100 parts by weight of a water-soluble silanol group-bearing silicone resin of the following average compositional formula (1):
- R.sup.1.sub.m R.sup.2.sub.n Si(OH).sub.p (OX).sub.q O.sub.(4-m-n-p-q)/2( 1)
- wherein R.sup.1 is an unsubstituted monovalent hydrocarbon group, R.sup.2 is a monovalent hydrocarbon group, substituted by (i) a halogen atom, (ii) an epoxy functional group, (iii) a (meth)acryl functional group, (iv) an amino functional group, (v) a sulfur-containing functional group, (vi) an alkyl ether functional group, (vii) a (polyoxyalkylene)alkyl ether group, (viii) a carboxyl, sulfonyl or other anionic group or (ix) a quaternary ammonium salt structure-containing group, OX is a hydrolyzable group where X is a monovalent hydrocarbon group, letters m, n, p and q are numbers satisfying 0.5.ltoreq.m.ltoreq.1.8, 0.ltoreq.n.ltoreq.1.0, 0<p.ltoreq.1.5, 0.ltoreq.q.ltoreq.0.5, 0.5.ltoreq.m+n.ltoreq.1.8, and 0<p+q.ltoreq.1.5, and (2) 10 to 1,000 parts by weight of a radical polymerizable vinyl monomer as main components,
- said solution being substantially free of an organic solvent having a boiling point of less than 100.degree. C. an organic solvent which is insoluble or not uniformly dispersed in water and an aromatic organic solvent, and
- (B) a film-forming assistant having a boiling point of at least 100.degree. C. and soluble or uniformly dispersible in water.
Dependencies are inferred from the claim text.