-
公开(公告)号：US5166224A
公开(公告)日：1992-11-24
申请号：US636811
申请日：1991-01-02
摘要： Non-crystalline elastomeric acetal polymers are disclosed which have ethylenic unsaturation in the polymer backbone. The polymers are synthesized by the ring-opening polymerization of 1,3-dioxolane, 1,3-dioxepane, and the cyclic formal of an ethylenically unsaturated diol having at least 4 adjacent carbon atoms in its main chain. The preferred cyclic formal is 4,7-dihydro-1,3-dioxepin. Because of the ethylenic unsaturation, the elastomeric acetal polymers can be vulcanized or cured with multifunctional vinyl monomers to produce elastomers with improved properties, such as better elasticity, decreased thermoplasticity and decreased solubility. The elastomeric acetals in any of their embodiments are particularly useful for blending with crystalline acetal polymers to improve the impact resistance of the crystalline acetal polymers.
摘要翻译： 公开了在聚合物主链中具有烯属不饱和键的非结晶弹性体缩醛聚合物。 聚合物通过其主链中具有至少4个相邻碳原子的1,3-二氧戊环，1,3-二氧杂环庚烷和烯键式不饱和二醇的环状缩甲醛的开环聚合合成。 优选的环状缩甲醛是4,7-二氢-1,3-二氧杂环庚烯。 由于烯属不饱和度，弹性体缩醛聚合物可以用多官能乙烯基单体硫化或固化，以生产具有改进性能的弹性体，例如更好的弹性，降低的热塑性和降低的溶解度。 其任何实施方案中的弹性体缩醛特别可用于与结晶缩醛聚合物共混以改善结晶缩醛聚合物的耐冲击性。
-
公开(公告)号：US5041505A
公开(公告)日：1991-08-20
申请号：US406641
申请日：1989-09-13
摘要： Copolymers of 1,3-dioxolane and 1,3-dioxepane in the form of non-crystalline high molecular weight elastomers having low glass transition temperatures (Tg) are disclosed. Such copolymers are formed by polymerizing from about 40 to about 60 mol percent of 1,3-dioxolane and correspondingly from about 60 to about 40 mol percent of 1,3-dioxepane under substantially anhydrous conditions in the presence of a cationic polymerization catalyst, e.g., a strong Bronsted acid such as trifluoromethanesulfonic acid. Blends of such non-crystalline copolymers with crystalline oxymethylene polymers are also disclosed.
摘要翻译： 公开了具有低玻璃化转变温度（Tg）的非结晶高分子量弹性体形式的1,3-二氧戊环和1,3-二氧杂环庚烷的共聚物。 这种共聚物通过在阳离子聚合催化剂的存在下，在基本上无水的条件下聚合约40至约60mol％的1,3-二氧戊环和相应地约60至约40mol％的1,3-二氧杂环庚烷形成，例如 ，强烈的布朗斯台德酸，如三氟甲磺酸。 还公开了这种非结晶共聚物与结晶甲醛聚合物的共混物。
-
公开(公告)号：US5412042A
公开(公告)日：1995-05-02
申请号：US735974
申请日：1991-07-25
CPC分类号： C08G4/00
摘要： A crosslinked elastomeric acetal polymer is synthesized from 1,3-dioxolane, 1,3-dioxepane, and a polyfunctional crosslinking compound having two or more functional groups that react under conditions of cationic polymerization, such as 1,4-divinyloxybutane or poly(butadiene oxide). The polymers are elastomeric and non-crystalline at temperatures well below room temperature. They can be blended with crystalline acetal polymers to produce blends that have improved impact properties.
摘要翻译： 交联的弹性体缩醛聚合物由1,3-二氧戊环，1,3-二氧杂环庚烷和具有两个或更多个在阳离子聚合条件下反应的官能团的多官能交联化合物合成，例如1,4-二烯氧基丁烷或聚（丁二烯 氧化物）。 在远低于室温的温度下，聚合物是弹性体和非结晶的。 它们可与结晶缩醛聚合物共混以产生具有改善的冲击性能的共混物。
-
公开(公告)号：US4788258A
公开(公告)日：1988-11-29
申请号：US96187
申请日：1987-09-14
申请人： George L. Collins , Paul Zema , William M. Pleban
发明人： George L. Collins , Paul Zema , William M. Pleban
CPC分类号： C08G2/00
摘要： Low Tg copolymers of trioxane and 1,3-dioxolane which have a dioxolane content greater than 65 mol percent and less than about 75 mol percent and an IV of from about 1.0 to about 2.3, and which are non-crystalline at room temperature or above, are disclosed. These polymers, when blended with crystalline oxymethylene polymers, improve the latter's impact properties. They can also be used as adhesives for crystalline oxymethylene polymers.
-
公开(公告)号：US4954400A
公开(公告)日：1990-09-04
申请号：US255569
申请日：1988-10-11
IPC分类号： B32B15/01 , B32B7/12 , B32B17/06 , C08G2/10 , C08G2/18 , C08J5/12 , C09J159/00 , C09J163/00
CPC分类号： C09J159/00 , Y10T428/31515 , Y10T428/3163 , Y10T428/31692 , Y10T428/31895
摘要： There are provided new articles comprising elements having surfaces bonded together with a bonding resin which is an elastomeric copolymer of about 15 to 45 mol %, preferably about 25 to 35 mol % trioxane, about 55 to 85 mol %, preferably about 65 to 75 mol % of 1,3-dioxolane, said mol percents based on the total of trioxane and 1,3-dioxolane, and about 0.005 to 0.15 wt. %, preferably about 0.05 to 0.12 wt. % of 1,4-butanediol diglycidyl ether or butadiene diepoxide as a bifunctional monomer, based on the total weight of copolymer. Preferably, at least one of said surfaces, and more preferably at least two of said surfaces bonded to each other are of a crystalline acetal polymer comprising at least 85 mol % of polymerized oxymethylene units.
-
公开(公告)号：US5286808A
公开(公告)日：1994-02-15
申请号：US735486
申请日：1991-07-25
申请人： George L. Collins , William M. Pleban , Paul Zema
发明人： George L. Collins , William M. Pleban , Paul Zema
CPC分类号： C08G2/18
摘要： Crosslinked elastomeric acetal polymers are made by the copolymerization of 1,3-dioxolane with a smaller amount of one or more bifunctional monomers. The two functional groups of the bifunctional monomer react under the same cationic polymerization conditions as the 1,3-dioxolane. The elastomeric acetal polymer does not crystallize even when the temperature is as low as -50.degree. C. The elastomeric acetal polymer is particularly useful for blending with crystalline acetal polymers to yield a composition with improved impact resistance.
摘要翻译： 交联的弹性体缩醛聚合物通过1,3-二氧戊环与较少量的一种或多种双官能单体的共聚来制备。 双功能单体的两个官能团在与1,3-二氧戊环相同的阳离子聚合条件下反应。 即使温度低至-50℃，弹性体缩醛聚合物也不会结晶。弹性体缩醛聚合物特别可用于与结晶缩醛聚合物共混以产生具有改善的耐冲击性的组合物。
-
公开(公告)号：US4758608A
公开(公告)日：1988-07-19
申请号：US96188
申请日：1987-09-14
申请人： George L. Collins , Paul Zema , William M. Pleban
发明人： George L. Collins , Paul Zema , William M. Pleban
IPC分类号： C08F2/48 , C08F283/06 , C08F290/00 , C08F299/02 , C08G2/00 , C08G2/18 , C08G2/24 , C08G2/26 , C08L59/04
CPC分类号： C08G2/00 , C08F283/06
摘要： Ultraviolet curable terpolymers of trioxane, from at least 65 weight percent to about 75 weight percent of 1,3-dioxolane and from about 2 weight percent to about 20 weight percent of a monoethylenically unsaturated aliphatic diol formal having at least 4 carbon atoms in its main chain, e.g., 4,7-dehydro- 1,3-dioxepin, which are non-crystalline at room temperature or above are disclosed. These terpolymers, when admixed with a multifunctional crosslinking monomer, e.g., a multifunctional acrylate such as 1,6-hexanediol diacrylate, and a photosensitizer, e.g., a benzoin compound such as benzoin isobutyl ether, can be cured to an insoluble, non-tacky, rubbery state using UV radiation. The thus-cured polymeric materials form useful crosslinked films, and when cryogenically ground to a suitable small particle size can be blended with conventionally prepared crystalline oxymethylene homo-, co- and terpolymers to improve the latters' impact properties.
-
公开(公告)号：US5156913A
公开(公告)日：1992-10-20
申请号：US448401
申请日：1989-12-11
申请人： George L. Collins , Edwina Ying
发明人： George L. Collins , Edwina Ying
CPC分类号： C03C25/26 , C08K9/04 , Y10T428/2904 , Y10T428/2907 , Y10T428/2933 , Y10T428/2964
摘要： There are provided novel mixtures and composites comprising a normally crystalline acetal polymer and a reinforcing material comprising glass fibers or filaments sized with a normally non-crystalline elastomeric copolymer of about 15 to 45 mol %, preferably about 25 to 35 mol % of trioxane, about 55 to 85 mol %, preferably about 65 to 75 mol % of 1,3-dioxolane, said mol percents based on the total of trioxane and 1,3-dioxolane, and about 0.005 to 0.15 wt. %, preferably about 0.05 to 0.12 wt. % of 1,4-butanediol diglycidyl ether or butadiene diepoxide as a bifunctional monomer, based on the total weight of copolymer.
摘要翻译： 提供了新颖的混合物和复合材料，其包含常规结晶的缩醛聚合物和增强材料，所述增强材料包含玻璃纤维或长丝，所述玻璃纤维或长丝的尺寸与通常为约15至45摩尔％，优选约25至35摩尔％的三恶烷的弹性共聚物约为 55至85摩尔％，优选约65至75摩尔％的1,3-二氧戊环，所述摩尔百分比基于三恶烷和1,3-二氧戊环的总量，以及约0.005至0.15重量％ ％，优选约0.05至0.12wt。 ％的1,4-丁二醇二缩水甘油醚或丁二烯二环氧化物作为双功能单体，基于共聚物的总重量。
-
公开(公告)号：US5045607A
公开(公告)日：1991-09-03
申请号：US333511
申请日：1989-04-05
摘要： There are provided new moldable blends of a normally crystalline acetal polymer and a normally non-crystalline elastomeric copolymer of about 15 to 45 mol %, preferably about 25 to 35 mol % of trioxane, about 55 to 85 %, preferably about 65 to 75 mol % of 1,3-dioxolane, said mol percents based on the total of trioxane and 1,3-dioxolane, and about 0.005 to 0.15 wt. %, preferably about 0.05 to 0.12 wt. % of 1,4-butanediol diglycidyl ether or butadiene diepoxide as a bifunctional monomer, based on the total weight of copolymer.
摘要翻译： 提供了通常结晶的缩醛聚合物和通常非结晶弹性体共聚物的新的可模制共混物，其为约15至45摩尔％，优选约25至35摩尔％的三恶烷，约55至85重量％，优选约65至75摩尔 ％的1,3-二氧戊环，基于三恶烷和1,3-二氧戊环的总量的摩尔百分比，以及约0.005至0.15重量％ ％，优选约0.05至0.12wt。 ％的1,4-丁二醇二缩水甘油醚或丁二烯二环氧化物作为双功能单体，基于共聚物的总重量。
-
公开(公告)号：US4816107A
公开(公告)日：1989-03-28
申请号：US96189
申请日：1987-09-14
IPC分类号： C08G2/18 , C08G65/26 , C08J5/12 , C09J171/00 , C09J5/02
CPC分类号： C08J5/125 , C08G2/18 , C08J2359/02 , Y10T428/31504 , Y10T428/31942 , Y10T428/31946
摘要： Oxymethylene polymer bonded articles, such as multilayer laminates, are disclosed. Such articles are prepared by bonding together at least two articles shaped or molded from crystalline oxymethylene homo-, co- and terpolymers using, as an adhesive, a low Tg copolymer of trioxane and 1,3-dioxolane which have a dioxolane content greater than 65 mol percent and less than about 75 mol percent and an IV of from about 1.0 to about 2.3, and which are non-crystalline at room temperature or above.
-
-
-
-
-
-
-
-
-
搜索结果
26 条记录 (耗时 0.054 秒)
