Process for hydrophilicization of hydrophobic polymers
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B05D-003/00
H05H-001/00
C23C-016/00
출원번호
US-0851052
(1997-05-05)
발명자
/ 주소
Hostettler Fritz
Helmus Michael N.
Ding Ni
출원인 / 주소
Schneider (USA) Inc
대리인 / 주소
Richardson
인용정보
피인용 횟수 :
76인용 특허 :
34
초록▼
A process for rendering the surfaces of polymeric plastic or rubber materials, which are intrinsically non-polar or only slightly polar, and hydrophobic, polar or more polar, and hydrophilic, so that amine-containing functional groups, and ultimately, a durable tenaciously adhering, slippery polyure
A process for rendering the surfaces of polymeric plastic or rubber materials, which are intrinsically non-polar or only slightly polar, and hydrophobic, polar or more polar, and hydrophilic, so that amine-containing functional groups, and ultimately, a durable tenaciously adhering, slippery polyurethane or polyurethane-urea hydrogel coating may subsequently be applied to the polymer surface, is disclosed. The process involves dual plasma-treatment of a polymeric plastic or rubber substrate material; the first treatment being with an oxygen-containing plasma gas, to affix hydroxyl, carboxyl and carbonyl groups to the substrate surface, thereby rendering the surface more polar and activated; and the second treatment being with a nitrogen-containing plasma gas, to affix amine and amino groups to the substrate surface to make it more hydrophilic and reactive toward terminal isocyanate groups of a polyurethane or polyurethane/urea prepolymer adduct intermediate tie-coat which is subsequently applied to the substrate surface and then converted to a tenaciously adhering, slippery hydrogel coating. The process is especially suited to the hydrophilicization of intrinsically non-polar and hydrophobic polymeric plastic materials, such as polyethylenes, nylons-11 and nylons-12.
대표청구항▼
[ We claim:] [1.] A process for treating a material, the process comprising steps of:(a) providing the material having an outer surface, the material comprising a polymer selected from the group consisting of polyethylene terephthalate, block copolymers comprising aliphatic polyethers and aromatic p
[ We claim:] [1.] A process for treating a material, the process comprising steps of:(a) providing the material having an outer surface, the material comprising a polymer selected from the group consisting of polyethylene terephthalate, block copolymers comprising aliphatic polyethers and aromatic polyesters, block copolymers comprising aliphatic polyethers and polyamides, polyamides, polyimides, polyurethanes, polyethylenes, polypropylenes, natural rubbers, and synthetic rubbers;(b) exposing the material to a first plasma stream containing O.sub.2 gas and optionally NH.sub.3 gas and/or Ar gas;(c) exposing the material to a second plasma stream containing NH3 gas and/or an amine having the structure R.sub.1 NH.sub.2, R.sub.1 NHR.sub.2, or H.sub.2 N--R.sub.3 --NH.sub.2, wherein R.sub.1 and R.sub.2 are hydrocarbons having from 1-8 carbon atoms and R.sub.3 is a hydrocarbon having from 2-8 carbon atoms; and(d) after the steps (a), (b) and (c), applying a hydrophilic prepolymer containing terminal isocyanate groups to at least part of the outer surface.
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