Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1978-01-16
1979-09-11
Briggs, Sr., Wilbert J.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
525446, 260 21, 260 336SB, 525445, C08L 6128, C08L 8306
Patent
active
041675371
ABSTRACT:
A surface-coating composition for plastic articles, which comprises as a film-forming agent (A) a mixture of the reaction of an aminoalkylalkoxy silane of the general formula ##STR1## WHEREIN R.sup.1 represents a divalent hydrocarbon group containing 1 to 4 carbon atoms, R.sup.2 and R.sup.3 represent a monovalent hydrocarbon group containing 1 to 4 carbon atoms, Z represents a hydrogen atom or an aminoalkyl group, and n is 0 or 1, with an epoxyalkylalkoxy silane of the general formula ##STR2## WHEREIN R.sup.1, R.sup.2 and R.sup.3 are as defined above, Q represents a glycidoxy group ##STR3## or an epoxycyclohexyl group, and m is 0 or 1, and (B) a mixture of an alkyl-modified methylol melamine of the general formula ##STR4## wherein R.sup.4, R.sup.5, R.sup.6, R.sup.7, R.sup.8 and R.sup.9 represent a hydrogen atom or a monovalent hydrocarbon group with 1 to 4 carbon atoms, and an alkyd resin; the amount of component (A) being 45 to 80% by weight, and the amount of component (B) being 20 to 55% by weight, both based on the total amount of components (A) and (B). The composition may further contain (C) an acrylic acid derivative of the general formula ##STR5## wherein R.sup.10 represents a hydrogen atom or a methyl group, and R.sup.11 represents a hydrogen atom, a hydrocarbon group containing 1 to 4 carbon atoms, a hydroxyalkyl group or a glycidyl group, or its polymer of a low degree of polymerization, the amount of component (C) being 5 to 30% by weight based on the total amount of components (A), (B) and (C).
REFERENCES:
patent: 3425974 (1969-02-01), Semroc
patent: 3837876 (1974-09-01), Mayuzumi et al.
patent: 3919150 (1975-11-01), Kiel
patent: 3988523 (1976-10-01), McCombs
Inoue Shoichi
Takanohashi Hiromitsu
Taniyama Susumu
Briggs Sr. Wilbert J.
Mitsubishi Gas Chemical Company Inc.
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