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    • 4. 发明申请
    • Water-based vulcanizable adhesive composition
    • 水性硫化胶粘剂组合物
    • US20060041059A1
    • 2006-02-23
    • US10541339
    • 2004-01-22
    • Kiyofumi FukasawaKatsumi Abe
    • Kiyofumi FukasawaKatsumi Abe
    • C08F16/06
    • C09J161/04
    • An aqueous vulcanizable adhesive composition, which comprises a phenol resin emulsion prepared from a water-insoluble phenol resin solution in methyl ethyl ketone and an aqueous water-soluble polymeric substance solution, and a curing agent for phenol resin, uses a partially water-miscible methyl ethyl ketone in place of a completely water-miscible organic solvent, where an amount of methyl ethyl ketone is considerably reduced. PVA, preferably aceto-acetyl-modified PVA, is used as the water-soluble polymeric substance, and the aqueous vulcanizable adhesive composition is suitably used for vulcanization bonding of a metal to (hydrogenated) NBR or acrylic rubber.
    • 一种含水可硫化粘合剂组合物,其包含由甲基乙基酮中的水不溶性酚醛树脂溶液和水溶性聚合物溶液制备的酚醛树脂乳液和酚醛树脂的固化剂,使用部分水混溶性甲基 乙基酮代替完全水混溶的有机溶剂,其中甲基乙基酮的量显着降低。 PVA,优选乙酰 - 乙酰基改性的PVA用作水溶性聚合物,并且该可水性硫化粘合剂组合物适用于金属与(氢化)NBR或丙烯酸橡胶的硫化粘合。
    • 7. 发明授权
    • Phenol formaldehyde adhesive for bonding wood pieces of high moisture
content and composite board and veneers bonded with such adhesive
    • 苯酚甲醛粘合剂,用于粘合高含水量的木片和复合板以及用这种粘合剂粘结的单板
    • US4824896A
    • 1989-04-25
    • US165929
    • 1988-03-09
    • Michael R. ClarkePaul R. SteinerAxel W. Anderson
    • Michael R. ClarkePaul R. SteinerAxel W. Anderson
    • B27D1/04C09J161/04C08L61/00C08K3/38
    • B27D1/04C09J161/04
    • Disclosed is an improved phenol formaldehyde (PF) resin that does not require fillers or extenders and is capable of bonding wafers or veneers having a moisture content of 10% or above. In the case of veneers exceptional results are obtained when the permeability of the veneer is increased by incising.The adhesive composition is prepared by mixing together a caustic solution of a high molecular weight PF resin, a dispersion of PF resin which is characterized in that it can swell in aqueous caustic medium but not go into solution, and a chemical which is capable of reacting with resins in both the continuous and the disperse phase, such as alkylene carbonates or phenol resorcinol formaldehyde (PRF) resins. Optionally, a component may be used such as borax which is capable of complexing with resins in the continuous and the disperse phase. The disperse phase is made by converting a solution of a PF resin into a fine particle size particulate form by precipitation, spray drying or freeze drying and partially cross-linking the resin during or subsequent to the formation of the fine particle size dispersion. The PF resin is partially cross-linked by (a) heat, by (b) acid catalysis, or by (c) a reaction with cross-linking chemicals such as cyclic carbonates or epoxy compounds or by a combination of (a) (b) and (c).The disperse phase may be made from a PF resin or from a resin in which some of the phenol has been replaced by other phenolic chemicals such as resorcinol, catechol, or kraft lignin. The chemical capable of reacting with resins in the continuous and the disperse phase may be a cyclic carbonate or a phenol resorcinol resin.Also disclosed is a wood product produced from veneers having moisture contents at 10% or above and incised to improve their permeability to gases and liquids.