Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1989-07-25
1991-12-17
Marquis, Melvyn I.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
525 65, 525 92, 525111, 525113, 525524, 525528, 525529, 525530, 525531, C08L 902, C08L 6302, C08L 7102
Patent
active
050736019
ABSTRACT:
The invention relates to compositions containing A) a liquid copolymer based on butadiene and at least one polar, ethylenically unsaturated comonomer, and B) a polyether prepolymer capped with hydroxyarylcarboxylic or hydroxyaralkylcarboxylic acids, or a capped polyester, polythioester or polyamide containing polyether segments. The phenolic hydroxyl group in component B) can also be etherified with epichlorohydrin and this product can be converted to an episulfide, if desired, or the phenolic hydroxyl group can be reacted with cyanogen halide to form a cyanate group.
The stock compositions can be used in combination with epoxy resins to manufacture structural adhesives or sealing compounds.
REFERENCES:
patent: 3943096 (1976-03-01), Schwarzenbach
patent: 3944594 (1976-03-01), Kleiner et al.
patent: 4602071 (1986-07-01), Wellner et al.
patent: 4609691 (1986-09-01), Geist et al.
patent: 4680076 (1987-07-01), Bard
patent: 4820789 (1989-04-01), Gonzalez et al.
Org. Coat. Plast. Chem., vol. 40, pp. 899-902.
Mulhaupt Rolf
Rufenacht Werner
Ciba-Geigy Corporation
Marquis Melvyn I.
Villamizar JoAnn
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