公开(公告)号：US3953169A

公开(公告)日：1976-04-27

申请号：US503514

申请日：1974-09-05

申请人： Seiichi Igarashi ,  Kin-ichi Shirakawa ,  Kazuo Kimura ,  Akira Ogino

发明人： Seiichi Igarashi ,  Kin-ichi Shirakawa ,  Kazuo Kimura ,  Akira Ogino

IPC分类号： C08G18/08 ,  D21H17/57 ,  D06M13/34 ,  D21H1/40

CPC分类号： D21H17/57 ,  C08G18/08 ,  Y10S8/11 ,  Y10T428/31591 ,  Y10T428/31993

摘要： A paperboard impregnated with polyurethane resin having specific NCO content and average molecular weight at the rate of 0.05 to 5.0 weight percent relative to the paperboard has excellent mechanical properties such as compressive strength, tensile strength, tearing strength, folding endurance, etc., even in wet state.

摘要翻译： 以相对于纸板0.05〜5.0重量％的比例具有特定NCO含量和平均分子量的聚氨酯树脂浸渍的纸板具有优异的机械性能如抗压强度，拉伸强度，撕裂强度，耐折性等，即使在 潮湿状态

公开(公告)号：US4091167A

公开(公告)日：1978-05-23

申请号：US686217

申请日：1976-05-12

申请人： Toshio Okada ,  Hideharu Ohtsuki ,  Hiroshi Inagaki ,  Toshiaki Hanyuda ,  Masateru Tokuno ,  Seiichi Igarashi

发明人： Toshio Okada ,  Hideharu Ohtsuki ,  Hiroshi Inagaki ,  Toshiaki Hanyuda ,  Masateru Tokuno ,  Seiichi Igarashi

IPC分类号： D21H17/19 ,  D21H19/16 ,  B05D3/06

CPC分类号： D21H19/16 ,  D21H17/19 ,  Y10T428/31511

摘要： This invention relates to a method for preparing paper board having excellent wet tensile strength and compression strength, which comprises (a) having paper board impregnated or coated with a mixture of an unsaturated vinyl ester prepolymer having a molecular weight of 300 to 3000 and having at least one hydroxyl group at the .beta.-position with respect to an ester bond in the molecule with at least one monomer selected from the group of methylacrylate, ethylacrylate and butylacrylate in a mixing weight ratio of 10:90-40:60, and (b) irradiating the paper board having the resinous mixture with electrons to cure the resinous mixture.

摘要翻译： 本发明涉及一种制备具有优异的湿拉伸强度和抗压强度的纸板的方法，该方法包括（a）将纸板浸渍或涂覆有分子量为300至3000的不饱和乙烯基酯预聚物的混合物， 在β-分子中相对于酯键的至少一个羟基与混合重量比为10：90-40：60的至少一种选自丙烯酸甲酯，丙烯酸乙酯和丙烯酸丁酯的单体和（b ）用电子照射具有树脂混合物的纸板以固化树脂混合物。