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US 4,067,835 AGranted
Glass fiber sizing agent
AssigneeKao Soap Co., Ltd.
InventorsShigeru Takamori, Yoshinao Kono, Hirotaka Takemoto
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AssigneeKao Soap Co., Ltd.
InventorsShigeru Takamori, Yoshinao Kono, Hirotaka Takemoto
Estimating the term…
A glass fiber sizing agent comprising, as a sizing component, an oil-in-water emulsion of a saturated polyester which is formed by emulsifying in water, a saturated polyester obtained by reacting, under heating, (a) an aromatic or saturated aliphatic dicarboxylic acid or lower alkyl ester thereof, (b) a diol component containing at least 40 mole %, based on the total diol component, of an adduct of 2 to 10 moles of an alkylene oxide to 2,2-bis(4-hydroxyphenyl)propane, and (c) 5 to 30 parts by weight, per 100 parts by weight of the sum of the starting components (a) and (b), of an emulsifier selected from the group consisting of an adduct of 10 to 200 moles of ethylene oxide to castor oil, an adduct of 10 to 200 moles of ethylene oxide to hardened castor oil and a polyethylene glycol having an average molecular weight of 1000 to 6000.
A composition useful for sizing glass fibers, comprising an oil-in-water emulsion obtained by emulsifying in water a saturated film-forming polyester prepared by reacting, under polyester-forming conditions, (a) an aromatic or saturated aliphatic dicarboxylic acid or lower alkyl ester thereof, (b) a diol component consisting of from 40 to 100 mole % of an adduct of 2 to 10 moles of an alkylene oxide to 2,2-bis(4-hydroxyphenyl)propane and from zero to 60 mole % of a different polyester-forming polyol, and (c) from 5 to 30 parts by weight, per 100 parts by weight of the sum of (a) and (b), of an emulsifier selected from the group consisting of an adduct of 10 to 200 moles of ethylene oxide to castor oil, an adduct of 10 to 200 moles of ethylene oxide to hardened castor oil and polyethylene glycol having an average molecular weight of from 1000 to 6000.
Dependencies are inferred from the claim text.